Pub Date : 2020-01-17DOI: 10.35119/ASJOO.V17I1.454
D. Mahajan, G. Sharma, R. Tuli
Posterior orbital cellulitis is a clinical syndrome in which early severe visual loss overshadows or precedes accompanying inflammatory orbital signs. It is an ocular emergency that can threaten life and vision. Central retinal artery occlusion (CRAO) is a very rare condition leading to sudden onset of decreased vision and can even progress to blindness. We report a case of orbital cellulitis following Caldwell Luc surgery in a middle-aged diabetic woman, resulting in the rare complication of CRAO, leading to blindness in her right eye. The development of retinal artery occlusion after orbital cellulitis has not been well documented in literature. A quick diagnosis and close monitoring following sinus surgery is therefore needed to prevent such rare complications to happen.
{"title":"Orbital cellulitis following Caldwell Luc procedure for maxillary sinusitis leading to a rare complication of central retinal artery occlusion","authors":"D. Mahajan, G. Sharma, R. Tuli","doi":"10.35119/ASJOO.V17I1.454","DOIUrl":"https://doi.org/10.35119/ASJOO.V17I1.454","url":null,"abstract":"Posterior orbital cellulitis is a clinical syndrome in which early severe visual loss overshadows or precedes accompanying inflammatory orbital signs. It is an ocular emergency that can threaten life and vision. Central retinal artery occlusion (CRAO) is a very rare condition leading to sudden onset of decreased vision and can even progress to blindness. We report a case of orbital cellulitis following Caldwell Luc surgery in a middle-aged diabetic woman, resulting in the rare complication of CRAO, leading to blindness in her right eye. The development of retinal artery occlusion after orbital cellulitis has not been well documented in literature. A quick diagnosis and close monitoring following sinus surgery is therefore needed to prevent such rare complications to happen.","PeriodicalId":39864,"journal":{"name":"Asian Journal of Ophthalmology","volume":"17 1","pages":"69-73"},"PeriodicalIF":0.0,"publicationDate":"2020-01-17","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"47642869","PeriodicalName":null,"FirstCategoryId":null,"ListUrlMain":null,"RegionNum":0,"RegionCategory":"","ArticlePicture":[],"TitleCN":null,"AbstractTextCN":null,"PMCID":"","EPubDate":null,"PubModel":null,"JCR":null,"JCRName":null,"Score":null,"Total":0}
Pub Date : 2020-01-17DOI: 10.35119/ASJOO.V17I1.444
Daniel Lai, K. Ong
We describe a case of a 52-year-old male presenting with severe mucopurulent conjunctivitis of the right eye. Corneal ulceration and associated anterior chamber activity was noted later in the course of the disease. Neisseria gonorrhoeae was positive on polymerase chain reaction (PCR) testing earlier than traditional microscopy and culture. He was successfully treated with ceftriaxone 500 mg intravenously and azithromycin 1 g orally as single doses in addition to ofloxacin ophthalmic solution 0.3% hourly to the right eye. This case highlights the need to consider the possibility of gonococcus in cases of suspected bacterial conjunctivitis, careful monitoring for corneal involvement and the importance of early detection with PCR.
{"title":"Adult gonococcal keratoconjunctivitis: early detection is key","authors":"Daniel Lai, K. Ong","doi":"10.35119/ASJOO.V17I1.444","DOIUrl":"https://doi.org/10.35119/ASJOO.V17I1.444","url":null,"abstract":"We describe a case of a 52-year-old male presenting with severe mucopurulent conjunctivitis of the right eye. Corneal ulceration and associated anterior chamber activity was noted later in the course of the disease. Neisseria gonorrhoeae was positive on polymerase chain reaction (PCR) testing earlier than traditional microscopy and culture. He was successfully treated with ceftriaxone 500 mg intravenously and azithromycin 1 g orally as single doses in addition to ofloxacin ophthalmic solution 0.3% hourly to the right eye. This case highlights the need to consider the possibility of gonococcus in cases of suspected bacterial conjunctivitis, careful monitoring for corneal involvement and the importance of early detection with PCR.","PeriodicalId":39864,"journal":{"name":"Asian Journal of Ophthalmology","volume":"17 1","pages":"30-34"},"PeriodicalIF":0.0,"publicationDate":"2020-01-17","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"42179073","PeriodicalName":null,"FirstCategoryId":null,"ListUrlMain":null,"RegionNum":0,"RegionCategory":"","ArticlePicture":[],"TitleCN":null,"AbstractTextCN":null,"PMCID":"","EPubDate":null,"PubModel":null,"JCR":null,"JCRName":null,"Score":null,"Total":0}
Pub Date : 2020-01-17DOI: 10.35119/ASJOO.V17I1.500
C. Fang, Seng Kheong Fang
Objective: To report baseline characteristics and surgical outcomes of placement of Baerveldt glaucoma implant (BGI) in Asian eyes with considerably elevated intraocular pressure (IOP) despite maximal medical therapy. Design: Retrospective case series of surgical cases from a single surgeon. Retrospective review of medical records of last clinic visits. Participants: One hundred and ninety-seven eyes of patients underwent placement of 350-mm2 Baerveldt implant. Methods: The medical records of consecutive patients who underwent placement of a Baerveldt 350-mm2 glaucoma drainage device (GDD) at the International Specialist Eye Centre from 2007 to 2014 were reviewed. Patients with a minimum 1-year follow-up were included. Baseline characteristics, pre-operative and post-operative IOP, number of glaucoma medications, visual acuity (VA) and complications were recorded. The pre-operative IOP is compared with the IOP at 1, 2, 3 and 5 years. Measures: The IOP, VA, supplemental medical therapy, complications and success and failures were recorded. Results: One hundred and ninety-seven patients were followed up at 1-year post-operation, 157 patients at 2 years, 120 at 3 years and 37 at 5 years. The mean baseline IOP of 29.2 ± 10.6 mmHg was significantly reduced at all time points post-operatively. Mean number of glaucoma medications was significantly lower at last follow-up than pre-operatively (1.8 vs. 2.7). Conclusions: Placement of GDDs effectively reduces IOP without much long-term complication and may be useful in glaucomatous eyes with considerably elevated pre-operative IOP not well controlled with maximal medical therapy in the Asian population.
目的:报道在亚洲眼内眼压(IOP)明显升高的情况下，尽管进行了最大限度的药物治疗，Baerveldt青光眼植入物(BGI)的基线特征和手术结果。设计:回顾性研究来自同一位外科医生的一系列手术病例。最后一次门诊病历的回顾性分析。实验对象:197眼患者行350-mm2 Baerveldt植入。方法:回顾2007年至2014年在国际专科眼科中心连续放置Baerveldt 350-mm2青光眼引流装置(GDD)患者的病历。患者至少随访1年。记录基线特征、术前、术后IOP、青光眼用药次数、视力(VA)及并发症。将术前IOP与1、2、3、5年时的IOP进行比较。措施:记录IOP、VA、辅助药物治疗、并发症及成败情况。结果:术后1年随访197例，2年随访157例，3年随访120例，5年随访37例。术后各时间点平均基线眼压(29.2±10.6 mmHg)均显著降低。最后一次随访时，青光眼药物的平均使用次数明显低于术前(1.8 vs. 2.7)。结论:植入式GDDs可有效降低IOP，且无长期并发症，对亚洲人群中术前IOP升高且药物治疗效果不佳的青光眼患者可能有用。
{"title":"Intermediate-term outcome of placement of Baerveldt glaucoma implant for refractory glaucoma in a Malaysian population","authors":"C. Fang, Seng Kheong Fang","doi":"10.35119/ASJOO.V17I1.500","DOIUrl":"https://doi.org/10.35119/ASJOO.V17I1.500","url":null,"abstract":"Objective: To report baseline characteristics and surgical outcomes of placement of Baerveldt glaucoma implant (BGI) in Asian eyes with considerably elevated intraocular pressure (IOP) despite maximal medical therapy. \u0000Design: Retrospective case series of surgical cases from a single surgeon. Retrospective review of medical records of last clinic visits. \u0000Participants: One hundred and ninety-seven eyes of patients underwent placement of 350-mm2 Baerveldt implant. \u0000Methods: The medical records of consecutive patients who underwent placement of a Baerveldt 350-mm2 glaucoma drainage device (GDD) at the International Specialist Eye Centre from 2007 to 2014 were reviewed. Patients with a minimum 1-year follow-up were included. Baseline characteristics, pre-operative and post-operative IOP, number of glaucoma medications, visual acuity (VA) and complications were recorded. The pre-operative IOP is compared with the IOP at 1, 2, 3 and 5 years. \u0000Measures: The IOP, VA, supplemental medical therapy, complications and success and failures were recorded. \u0000Results: One hundred and ninety-seven patients were followed up at 1-year post-operation, 157 patients at 2 years, 120 at 3 years and 37 at 5 years. The mean baseline IOP of 29.2 ± 10.6 mmHg was significantly reduced at all time points post-operatively. Mean number of glaucoma medications was significantly lower at last follow-up than pre-operatively (1.8 vs. 2.7). \u0000Conclusions: Placement of GDDs effectively reduces IOP without much long-term complication and may be useful in glaucomatous eyes with considerably elevated pre-operative IOP not well controlled with maximal medical therapy in the Asian population.","PeriodicalId":39864,"journal":{"name":"Asian Journal of Ophthalmology","volume":"17 1","pages":"108-119"},"PeriodicalIF":0.0,"publicationDate":"2020-01-17","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"48970829","PeriodicalName":null,"FirstCategoryId":null,"ListUrlMain":null,"RegionNum":0,"RegionCategory":"","ArticlePicture":[],"TitleCN":null,"AbstractTextCN":null,"PMCID":"","EPubDate":null,"PubModel":null,"JCR":null,"JCRName":null,"Score":null,"Total":0}
Pub Date : 2020-01-17DOI: 10.35119/ASJOO.V17I1.620
K. Ong, L. Ong
Two patients with presumed benzalkonium chloride (BAK) corneal toxicity after routine cataract surgery are presented. Patient 1 had corneal stroma and Descemet’s membrane folds. Patient 2 had moderate superficial punctate epithelial erosions (SPEE). They were on Chlorsig, Maxidex, and Acular eye drops tds postoperatively. The corneas of these two patients improved when BAK was removed or minimized from the postoperative eye drop regimen. Two vials of 1 ml dexamethasone 4mg/ml for injection were added to Chlorsig 10 ml bottle to substitute for Maxidex eye drops. BAK toxicity should be suspected when the cornea is not as clear as expected postoperatively. A practical way to eliminate BAK from postoperative eye drops is described, and would be useful until pharmaceuticals mass-produce BAK-free steroid eye drops economically.
{"title":"Benzalkonium chloride corneal toxicity post-cataract surgery","authors":"K. Ong, L. Ong","doi":"10.35119/ASJOO.V17I1.620","DOIUrl":"https://doi.org/10.35119/ASJOO.V17I1.620","url":null,"abstract":"Two patients with presumed benzalkonium chloride (BAK) corneal toxicity after routine cataract surgery are presented. Patient 1 had corneal stroma and Descemet’s membrane folds. Patient 2 had moderate superficial punctate epithelial erosions (SPEE). They were on Chlorsig, Maxidex, and Acular eye drops tds postoperatively. The corneas of these two patients improved when BAK was removed or minimized from the postoperative eye drop regimen. Two vials of 1 ml dexamethasone 4mg/ml for injection were added to Chlorsig 10 ml bottle to substitute for Maxidex eye drops. \u0000BAK toxicity should be suspected when the cornea is not as clear as expected postoperatively. A practical way to eliminate BAK from postoperative eye drops is described, and would be useful until pharmaceuticals mass-produce BAK-free steroid eye drops economically.","PeriodicalId":39864,"journal":{"name":"Asian Journal of Ophthalmology","volume":"17 1","pages":"56-60"},"PeriodicalIF":0.0,"publicationDate":"2020-01-17","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"43748584","PeriodicalName":null,"FirstCategoryId":null,"ListUrlMain":null,"RegionNum":0,"RegionCategory":"","ArticlePicture":[],"TitleCN":null,"AbstractTextCN":null,"PMCID":"","EPubDate":null,"PubModel":null,"JCR":null,"JCRName":null,"Score":null,"Total":0}
Pub Date : 2020-01-17DOI: 10.35119/ASJOO.V17I1.576
K. Ong, Daisy Y. Shu
We propose a method to estimate “fudge factor” in the selection of IOL power for post-myopic LASIK patients undergoing cataract surgery by considering the difference between subjective refraction (SR) and autorefraction (AR) and to also compare the predictability of two popular regression formulae: SRK-T and Haigis.
{"title":"Evaluating the difference between autorefraction and subjective refraction may guide “fudge factor” for IOL power selection for cataract surgery after previous LASIK","authors":"K. Ong, Daisy Y. Shu","doi":"10.35119/ASJOO.V17I1.576","DOIUrl":"https://doi.org/10.35119/ASJOO.V17I1.576","url":null,"abstract":"We propose a method to estimate “fudge factor” in the selection of IOL power for post-myopic LASIK patients undergoing cataract surgery by considering the difference between subjective refraction (SR) and autorefraction (AR) and to also compare the predictability of two popular regression formulae: SRK-T and Haigis.","PeriodicalId":39864,"journal":{"name":"Asian Journal of Ophthalmology","volume":"17 1","pages":"98-100"},"PeriodicalIF":0.0,"publicationDate":"2020-01-17","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"47324536","PeriodicalName":null,"FirstCategoryId":null,"ListUrlMain":null,"RegionNum":0,"RegionCategory":"","ArticlePicture":[],"TitleCN":null,"AbstractTextCN":null,"PMCID":"","EPubDate":null,"PubModel":null,"JCR":null,"JCRName":null,"Score":null,"Total":0}
Pub Date : 2020-01-17DOI: 10.35119/ASJOO.V17I1.463
A. Anand, Lalit Agarwal, N. Agrawal, A. Anand
Introduction: Pathological myopia is commonly associated with myopic traction maculopathy, which includes foveoschisis, foveal retinal detachment, macular hole (MH) and/or macular detachment (MD). Macular buckling is a rarely practiced extraocular surgical modality these days. The purpose of this study was to investigate the efficacy of primary buckling with Morin–Devin T implant for MD with MH and posterior staphyloma. Case description: A 52-year-old female presented with light perception vision in her right eye with posterior staphyloma, localized neurosensory detachment, and MH. She underwent primary macular buckling with Morin–Devin T implant. During the immediate postoperative day the wedge indentation was found misaligned to the fovea. A revision surgery was done after 2 weeks for repositioning of the macular wedge. Spectral domain optical coherence tomography confirmed indentation at the MH with resolution of subretinal fluid and hole closure. Her BCVA was 2/60 at 3 months postoperative and it remained the same even at 6 months of follow-up. Conclusions: Primary macular buckling can be an effective procedure in eyes with MH with detachment and posterior staphyloma with or without associated foveoschisis. Morin–Devin T implant placement is a relatively simple procedure with short surgical time and excellent outcome.
{"title":"Macular buckle with Morin–Devin T implant for pathological myopia with macular hole","authors":"A. Anand, Lalit Agarwal, N. Agrawal, A. Anand","doi":"10.35119/ASJOO.V17I1.463","DOIUrl":"https://doi.org/10.35119/ASJOO.V17I1.463","url":null,"abstract":"Introduction: Pathological myopia is commonly associated with myopic traction maculopathy, which includes foveoschisis, foveal retinal detachment, macular hole (MH) and/or macular detachment (MD). Macular buckling is a rarely practiced extraocular surgical modality these days. The purpose of this study was to investigate the efficacy of primary buckling with Morin–Devin T implant for MD with MH and posterior staphyloma. \u0000Case description: A 52-year-old female presented with light perception vision in her right eye with posterior staphyloma, localized neurosensory detachment, and MH. She underwent primary macular buckling with Morin–Devin T implant. During the immediate postoperative day the wedge indentation was found misaligned to the fovea. A revision surgery was done after 2 weeks for repositioning of the macular wedge. Spectral domain optical coherence tomography confirmed indentation at the MH with resolution of subretinal fluid and hole closure. Her BCVA was 2/60 at 3 months postoperative and it remained the same even at 6 months of follow-up. \u0000Conclusions: Primary macular buckling can be an effective procedure in eyes with MH with detachment and posterior staphyloma with or without associated foveoschisis. Morin–Devin T implant placement is a relatively simple procedure with short surgical time and excellent outcome.","PeriodicalId":39864,"journal":{"name":"Asian Journal of Ophthalmology","volume":"17 1","pages":"78-85"},"PeriodicalIF":0.0,"publicationDate":"2020-01-17","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"48733953","PeriodicalName":null,"FirstCategoryId":null,"ListUrlMain":null,"RegionNum":0,"RegionCategory":"","ArticlePicture":[],"TitleCN":null,"AbstractTextCN":null,"PMCID":"","EPubDate":null,"PubModel":null,"JCR":null,"JCRName":null,"Score":null,"Total":0}
Pub Date : 2020-01-17DOI: 10.35119/ASJOO.V17I1.446
D. Mazumdar, Barsha Lal, R. Asokan
We report a case of six-year-old boy who presented with a progressive intracorneal cyst in the left eye. Anterior segment optical coherence tomography (AS-OCT) was performed, and it showed the location of the cyst in the corneal stroma. Its dimension was measured to be 7.09 A~ 2.12 mm. The cyst aspiration was successfully done. AS-OCT helped in the management and follow-up of the condition.
{"title":"Anterior segment optical coherence tomography of intrastromal corneal cysts","authors":"D. Mazumdar, Barsha Lal, R. Asokan","doi":"10.35119/ASJOO.V17I1.446","DOIUrl":"https://doi.org/10.35119/ASJOO.V17I1.446","url":null,"abstract":"We report a case of six-year-old boy who presented with a progressive intracorneal cyst in the left eye. Anterior segment optical coherence tomography (AS-OCT) was performed, and it showed the location of the cyst in the corneal stroma. Its dimension was measured to be 7.09 A~ 2.12 mm. The cyst aspiration was successfully done. AS-OCT helped in the management and follow-up of the condition.","PeriodicalId":39864,"journal":{"name":"Asian Journal of Ophthalmology","volume":"17 1","pages":"41-44"},"PeriodicalIF":0.0,"publicationDate":"2020-01-17","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"42532640","PeriodicalName":null,"FirstCategoryId":null,"ListUrlMain":null,"RegionNum":0,"RegionCategory":"","ArticlePicture":[],"TitleCN":null,"AbstractTextCN":null,"PMCID":"","EPubDate":null,"PubModel":null,"JCR":null,"JCRName":null,"Score":null,"Total":0}
Pub Date : 2020-01-17DOI: 10.35119/ASJOO.V17I1.451
D. Oh, Y. Chan, Sao-Bing Lee, J. See
Introduction: Collagen cross-linking is a useful adjunct in preventing corneal ectasia after laser-assisted in situ keratomileusis (LASIK). This study aimed to evaluate whether prophylactic cross-linking in IntraLase LASIK affects optimum visual outcome and recovery time in the immediate post-surgery period and is associated with any side effects. Methods: This was a retrospective case study on the right eyes of 100 Chinese subjects aged 18 to 40 years who underwent IntraLase LASIK. Fifty subjects who underwentcross-linking after completing LASIK (Group A) were compared with 50 subjects who did not undergo LASIK (Group B). Cases were evaluated for pre- and post-operative spherical equivalent, uncorrected distance visual acuity (UDVA) and corrected distance visual acuity (CDVA), recovery time and presence of side effects. Results: At 1 week post-LASIK, mean (SD) UDVA of Group A subjects was poorer than Group B, at 1.05 (0.19) vs 1.17 (0.19) (p = 0.036); however, there was no significant difference in CDVA (p = 0.095). By 1 month post-LASIK, differences in both UDVA and CDVA were insignificant (p = 0.055, 0.106, respectively). Mean recovery time was 2.72 (95% confidence interval [CI] = 0.64-4.7) days longer in Group A (p = 0.010), although by 1 month post-LASIK, both groups were able to achieve CDVA equal to or better than that achieved pre-LASIK. Incidence of mild inflammation and dry eyes post-LASIK was similar in both groups (p = 1.00, 0.749, respectively); no other complications were observed. Conclusion: No differences in visual outcomes at and occurrence of side effects at 1 month post-LASIK were observed between subjects who underwent cross-linking prior to refractive surgery and those who did not. However, the group that underwent cross-linking had a slightly longer mean recovery time. Our study supports prophylactic cross-linking as a safe procedure that does not affect immediate visual outcomes among the Chinese population when used in adjunct with LASIK surgery.
{"title":"Prophylactic corneal cross-linking in LASIK surgery: effects on visual outcome and recovery time","authors":"D. Oh, Y. Chan, Sao-Bing Lee, J. See","doi":"10.35119/ASJOO.V17I1.451","DOIUrl":"https://doi.org/10.35119/ASJOO.V17I1.451","url":null,"abstract":"Introduction: Collagen cross-linking is a useful adjunct in preventing corneal ectasia after laser-assisted in situ keratomileusis (LASIK). This study aimed to evaluate whether prophylactic cross-linking in IntraLase LASIK affects optimum visual outcome and recovery time in the immediate post-surgery period and is associated with any side effects. \u0000Methods: This was a retrospective case study on the right eyes of 100 Chinese subjects aged 18 to 40 years who underwent IntraLase LASIK. Fifty subjects who underwentcross-linking after completing LASIK (Group A) were compared with 50 subjects who did not undergo LASIK (Group B). Cases were evaluated for pre- and post-operative spherical equivalent, uncorrected distance visual acuity (UDVA) and corrected distance visual acuity (CDVA), recovery time and presence of side effects. \u0000Results: At 1 week post-LASIK, mean (SD) UDVA of Group A subjects was poorer than Group B, at 1.05 (0.19) vs 1.17 (0.19) (p = 0.036); however, there was no significant difference in CDVA (p = 0.095). By 1 month post-LASIK, differences in both UDVA and CDVA were insignificant (p = 0.055, 0.106, respectively). Mean recovery time was 2.72 (95% confidence interval [CI] = 0.64-4.7) days longer in Group A (p = 0.010), although by 1 month post-LASIK, both groups were able to achieve CDVA equal to or better than that achieved pre-LASIK. Incidence of mild inflammation and dry eyes post-LASIK was similar in both groups (p = 1.00, 0.749, respectively); no other complications were observed. \u0000Conclusion: No differences in visual outcomes at and occurrence of side effects at 1 month post-LASIK were observed between subjects who underwent cross-linking prior to refractive surgery and those who did not. However, the group that underwent cross-linking had a slightly longer mean recovery time. Our study supports prophylactic cross-linking as a safe procedure that does not affect immediate visual outcomes among the Chinese population when used in adjunct with LASIK surgery.","PeriodicalId":39864,"journal":{"name":"Asian Journal of Ophthalmology","volume":"17 1","pages":"61-68"},"PeriodicalIF":0.0,"publicationDate":"2020-01-17","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"42058174","PeriodicalName":null,"FirstCategoryId":null,"ListUrlMain":null,"RegionNum":0,"RegionCategory":"","ArticlePicture":[],"TitleCN":null,"AbstractTextCN":null,"PMCID":"","EPubDate":null,"PubModel":null,"JCR":null,"JCRName":null,"Score":null,"Total":0}
Pub Date : 2020-01-17DOI: 10.35119/ASJOO.V17I1.447
N. S. K. Meethal, V. Lokapavani, R. Asokan, L. Vijaya, R. George
Purpose: To compare patient preference for Swedish Interactive Threshold Algorithm (SITA) standard 24-2 protocol in Humphrey visual field analyzer (HVF) and full threshold N-30 protocol in frequency doubling perimetry (FDP) by primarily evaluating their perception about the test procedure and test targets along with surveying the factors that influence the patient concentration during perimetry and elements that determine the level of perimetry task difficulty. Methods: This study enrolled a subset of subjects from the Chennai Glaucoma Study. Each subject underwent a comprehensive ophthalmic examination after which they were randomly allocated to perform HVF and FDP with a 30-minute interval between the two procedures. SITA standard 24-2 protocol in HVF and full threshold N-30 protocol in FDP were used. This was followed by the administration of a questionnaire that mainly assessed the components such as (a) the patient preference for test procedure and test targets, (b) the factors influencing the patient concentration during perimetry performance, and (c) the impression about the level of perimetry task difficulty. The patient responses from the survey for each of the subcategories were obtained and analyzed using Chi-square test. Results: A total of 42 subjects with a mean age of 59.7 (SD 9.7) years were included, among which 18 (42.86%) were male and 24 (57.14%) were female. Thirty-two (76.19%) subjects felt both FDP and HVF were easy to perform, eight subjects (19.05%) felt that both perimetry techniques were difficult to perform, and two subjects (4.76%) found FDP procedure was easier than HVF, whereas the distribution was not statistically significant (Chi-square, p = 0.7). Pressing the button as a response to peripheral stimulus perception and inability to maintain steady central fixation for prolonged duration were the most commonly reported factors that influenced the level of difficulty of the perimetry tasks. A dark room ambience set for performing HVF was preferred by 32 (76.20%) subjects. Conclusion: There was no significant difference in the patient preference for test procedure and peripheral test targets. A black central fixation as in FDP and dark room ambience set for HVF were preferred.
{"title":"SITA standard testing with Humphrey visual field analyzer versus full threshold testing with frequency doubling perimetry: a comparison of patient preference and perception","authors":"N. S. K. Meethal, V. Lokapavani, R. Asokan, L. Vijaya, R. George","doi":"10.35119/ASJOO.V17I1.447","DOIUrl":"https://doi.org/10.35119/ASJOO.V17I1.447","url":null,"abstract":"Purpose: To compare patient preference for Swedish Interactive Threshold Algorithm (SITA) standard 24-2 protocol in Humphrey visual field analyzer (HVF) and full threshold N-30 protocol in frequency doubling perimetry (FDP) by primarily evaluating their perception about the test procedure and test targets along with surveying the factors that influence the patient concentration during perimetry and elements that determine the level of perimetry task difficulty. \u0000Methods: This study enrolled a subset of subjects from the Chennai Glaucoma Study. Each subject underwent a comprehensive ophthalmic examination after which they were randomly allocated to perform HVF and FDP with a 30-minute interval between the two procedures. SITA standard 24-2 protocol in HVF and full threshold N-30 protocol in FDP were used. This was followed by the administration of a questionnaire that mainly assessed the components such as (a) the patient preference for test procedure and test targets, (b) the factors influencing the patient concentration during perimetry performance, and (c) the impression about the level of perimetry task difficulty. The patient responses from the survey for each of the subcategories were obtained and analyzed using Chi-square test. \u0000Results: A total of 42 subjects with a mean age of 59.7 (SD 9.7) years were included, among which 18 (42.86%) were male and 24 (57.14%) were female. Thirty-two (76.19%) subjects felt both FDP and HVF were easy to perform, eight subjects (19.05%) felt that both perimetry techniques were difficult to perform, and two subjects (4.76%) found FDP procedure was easier than HVF, whereas the distribution was not statistically significant (Chi-square, p = 0.7). Pressing the button as a response to peripheral stimulus perception and inability to maintain steady central fixation for prolonged duration were the most commonly reported factors that influenced the level of difficulty of the perimetry tasks. A dark room ambience set for performing HVF was preferred by 32 (76.20%) subjects. \u0000Conclusion: There was no significant difference in the patient preference for test procedure and peripheral test targets. A black central fixation as in FDP and dark room ambience set for HVF were preferred.","PeriodicalId":39864,"journal":{"name":"Asian Journal of Ophthalmology","volume":"17 1","pages":"45-55"},"PeriodicalIF":0.0,"publicationDate":"2020-01-17","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"45460250","PeriodicalName":null,"FirstCategoryId":null,"ListUrlMain":null,"RegionNum":0,"RegionCategory":"","ArticlePicture":[],"TitleCN":null,"AbstractTextCN":null,"PMCID":"","EPubDate":null,"PubModel":null,"JCR":null,"JCRName":null,"Score":null,"Total":0}
Pub Date : 2020-01-15DOI: 10.35119/ASJOO.V17I1.440
Ankur N. Mehta, Wan-Ling Yi, A. Ananda, Raf Ghabriel
Purpose: To report on coexistent sinus symptoms in a population of patients who underwent endonasal dacryocystorhinostomy (DCR) surgery for nasolacrimal duct obstruction (NLDO) in a pilot study designed to test and refine methods and to estimate patient sample size for a larger multicentre randomised trial. Methods: Ninety-four consecutive patients with NLDO who underwent endonasal DCR by three surgeons in both public and private practice over a two-year period were included in this study. Questionnaires were given preceding DCR surgery and at 10 weeks post-surgery. Sinus symptoms including sinusitis, nasal congestion, hyposmia, nasal discharge, and facial pressure were assessed in the questionnaire. All subjects underwent primary endonasal DCR and all patients underwent the same post-operative regimen. Results: Questionnaire responses revealed that 48/94 (51%) patients had one or more sinus symptoms prior to DCR surgery. Ten-week post-DCR follow-up questionnaires were obtained from 77/94 (82%) patients. About 20/31 (65%) patients with one or more sinus symptoms prior to DCR surgery reported resolution of coexisting sinus symptoms by 10 weeks post-DCR surgery. Conclusion: The data from this pilot study suggest that approximately half of patients attending for NLDO have coexisting sinus symptoms. There was some loss to follow-up. This pilot study highlighted the need for a validated patient questionnaire, longer length of follow-up, control groups for surgical intervention, and use of perioperative medications. Any clinical trial designed to assess the impact of endonasal surgery on sinus symptoms would need to enrol several hundred patients in order to reach a statistically valid conclusion.
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