Accommodation in astigmatic eyes.

IF 1.8 4区医学 Q3 OPHTHALMOLOGY Optometry and Vision Science Pub Date : 1994-05-01 DOI:10.1097/00006324-199405000-00004

I Byakuno, F Okuyama, T Tokoro, Y Akizawa

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引用次数: 14

Abstract

Purpose: To investigate the effect of target chart contours and the severity of astigmatism on accommodation in astigmatic eyes.

Methods: The accommodative responses of 30 subjects were measured with an automated refractometer (Canon RK-1) using star pattern and bar pattern targets.

Results: The mean accommodative response was greatest when the bar pattern was parallel to the stronger principal meridian of the eye, followed by the star pattern and the bar pattern parallel to the weaker meridian on both meridians. Similar results were obtained in subjects with astigmatism greater or less than 1.25 D. The mean slopes of AR/AS plots decreased in the same order as the accommodative response and the change was significant in subjects with astigmatism exceeding 1.25 D. In addition, about one-third of the subjects showed a consistent decrease in astigmatism with accommodation.

Conclusions: These results indicate that the type of target chart and the severity of astigmatism influence the accommodative response.

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散光眼的调节

目的:探讨散光眼目标图轮廓和散光严重程度对调节的影响。方法:采用自动折射仪(Canon RK-1)测量30名受试者的调节反应，采用星形和条形靶。结果:横纹平行于眼强主经络时，平均调节反应最大，其次为星形纹和横纹平行于眼强主经络。在散光大于或小于1.25 d的被试中，AR/AS图的平均斜率与调节响应的顺序相同，而在散光大于1.25 d的被试中，这种变化更为显著。此外，约有三分之一的被试散光随调节而持续下降。结论:目标图类型和散光严重程度对调节反应有影响。

本文章由计算机程序翻译，如有差异，请以英文原文为准。

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来源期刊

Optometry and Vision Science 医学-眼科学

CiteScore

2.80

自引率

7.10%

发文量

210

审稿时长

3-6 weeks

期刊介绍： Optometry and Vision Science is the monthly peer-reviewed scientific publication of the American Academy of Optometry, publishing original research since 1924. Optometry and Vision Science is an internationally recognized source for education and information on current discoveries in optometry, physiological optics, vision science, and related fields. The journal considers original contributions that advance clinical practice, vision science, and public health. Authors should remember that the journal reaches readers worldwide and their submissions should be relevant and of interest to a broad audience. Topical priorities include, but are not limited to: clinical and laboratory research, evidence-based reviews, contact lenses, ocular growth and refractive error development, eye movements, visual function and perception, biology of the eye and ocular disease, epidemiology and public health, biomedical optics and instrumentation, novel and important clinical observations and treatments, and optometric education.