A study of contrast sensitivity in eyes with hydrophobic and hydrophilic acrylic foldable posterior chamber intraocular lens

: The aim of this study was to evaluate the effect of PCIOL on contrast sensitivity function in patients following Phacoemulsification surgery.This was an analytical observational study done on patients who underwent uneventful phacoemulsification with either hydrophobic or hydrophilic posterior chamber IOL's. Contrast sensitivity function (CSF) was measured preoperatively and postoperatively after 3 months with Pelli-Robson chart and compared. Normally distributed data was analysed using the independent sample t-test for intergroup comparison and for intragroup comparison before and after cataract surgery, paired t-test was used. Out of 50 patients underwent phacoemulsification surgery, 52% were females and 56% were belonged to age group of 51 to 60 years. 25 patients received hydrophobic intraocular lens and other 25 patients received hydrophilic intraocular lens.Postoperative mean contrast sensitivity (1.997 ± 0.01) was found statistically significant (p <0.01) as compared to the preoperative contrast sensitivity (1.556 ± 0.16). Significant improvement in contrast sensitivity was observed after cataract surgery in both the groups (p<0.05).: The reduced contrast sensitivity function due to cataract, improved after surgery. On the other hand, optical properties and the material of IOL has no impact on contrast sensitivity postoperatively.