The Effect of Cosmetic Contact Lenses on Visual Functions

Abstract

Aim: To evaluate the effect of cosmetic contact lenses (CCL) on visual functions. Material and Methods: This is experimental hospital based study conducted in Faculty of Optometry and Visual Sciences; during the period between March to July 2017.A total of 152 of females were enrolled in this study and they are relatively normal. Their ages ranged between 18 to 30with a mean of 22.7±4.01 years. Pelli–Robson contrast sensitivity chart, Farnsworth–Munsell D-15 test, Tetmus fly test and Snellen’s chart test were used in this study to evaluate contrast sensitivity, color vision, stereopsis and visual acuities respectively. The collected data was analyzed using statistical packages for social sciences SPSS 20 (IBM).Result: Each of the subjects was fitted with 7 different colours CCL; all subjects have normal vision in both eyes (6/5), normal stereopsis and colour vision (CV) before and after wearing CCL. In term of visual acuity there was a reduction after wearing CCL in (135) 88.8% of the both eyes a significant difference found in the 6 colours P 0.000; expect the blue colour P > 0.05.Contrast sensitivity (CS) in all participant was in normal range 1.5-1.85 with a mean of 1.60±0.07 before wearing CCL then after wearing CCL all of subjects moved to low CS <1.5 a significant difference was found in all the colours P value <0.001.Conclusion:This study revealed that cosmetic contact lenses reduces vision and contrast sensitivity.