Effect on contrast sensitivity after clear, yellow and orange intraocular lens implantation.

Abstract

The objective of this study is to evaluate contrast sensitivity function (CSF) after clear, yellow- and orange-tinted intraocular lens (IOL) implantation. This was a prospective randomized study of 98 patients with senile cataract for a period of 6months from day 1 of August 2014 to day 31 of January 2015. After phacoemulsification, 33 patients were implanted with clear IOLs (AcrySof UV-filtering IOL, SA60AT), 32 patients were implanted with yellow coloured IOLs (AcrySof Natural blue-light-attenuating and UV-filtering IOL, SN60AT with IMPRUV(®) filter) and 33 patients were implanted with orange-tinted blue-filtering IOLs (PC440Y Optech). After 1month, monocular CSF was done under photopic (85cd/m(2)) and mesopic (3cd/m(2)) illumination condition with CSV-1000 test. The best corrected visual acuity (BCVA) after 1month was 0.021±0.058 logMAR for clear lens, 0.022±0.059 logMAR for yellow lens and 0.019±0.065 logMAR for orange lens (p=0.989). Uniocular average photopic contrast sensitivity was 1.36±0.19, 1.43±0.18 and 1.46±0.15log units for clear lens, yellow lens and orange lens, respectively (statistically not significant; p=0.076). Average mesopic contrast sensitivity was 1.02±0.21log units for clear lens, 1.00±0.17log units for yellow lens and 0.99±0.15log units for orange lens (statistically not significant; p=0.771). Yellow or orange coloured blue-filtering IOLs are comparable to clear IOLs in terms of photopic and mesopic contrast sensitivity.