Contrast Sensitivity

The purpose of this study was to compare contrast sensitivity and visual acuity with contact lenses and spectacle lenses. This study involved a total of 30 participants, with a mean age of 22.10 ±3.66 years. Participants comprised of males (n = 13) and females (n = 17), who are myopic and hyperopic. Visual acuity was measured using a Snellen's chart at a distance of 6 m, and contrast sensitivity was determined by Pelli Robson chart at a distance of 1 m, one hour adaptation was given for the contact lens. The powers of the spectacle lenses are equivalent to the powers of the contact lenses. The results of the contrast sensitivity score and visual acuity measurement was compared using the Wilcoxon signed-rank test for non-parametric data to determine whether or not there were statistically significant differences in VA and Contrast Sensitivity using spectacles and contact lenses. The finding of this study reveals that there was no significant difference in visual acuity using both spectacle lens and contact lens ((p > 0.05, where p>0.05334). However, the result of this analysis shows a significant difference in contrast sensitivity using contact lens and spectacle lens (p < 0.05, where p<0.00137). In conclusion, this study show that soft contact lenses enhances visual performance and vision
quality with increase in contrast sensitivity better than spectacle lenses And that the choice of refractive correction has impact on visual performance for the majority of myopic and hypertrophy patients.