Colour vision defect in phakic vs pseudophakic eye group
Shua Azam, Abdul Hameed Talpur, Zeenat Bano, Mehjabeen Jaffri, Hina Haider, Vineeta Kumari, Sadia Bukhari
Objective: To determine the color vision defect in pseudophakic and phakic group. Material and Method: This was cross sectional with non-probability convenient sampling from June to November 2019 at Al-Ibrahim Eye Hospital, Karachi. The patient’s age lied between 45 to 60 years and had a follow up after 1 month of surgery. Visual acuity taken was from 6/6 to 6/18 after refraction. All types of refractive errors after Phacoemulsification surgery (Acrylic IOL) were included. Posterior sub-capsular opacity and other types of cataract surgery were excluded. The Panel D -15 test was used to assess color vision defect. Ethical approval was given by Research Ethical Committee (REC) of ISRA Postgraduate Institute of Ophthalmology. Statistical analysis was done by statistical package for social science (SPSS) version 20.0. Results: A total of 160 eyes were enrolled in this study. Among 160 eyes; 70 (44%) and 90 (56%) eyes were of males and females, respectively. The eyes were categorized in two groups, 80 (50%) were phakic and 80 (50%) were pseudophakic. Among 80 (50%) pseudophakic eyes; 32 eyes had Tritanopia (40%), 10 eyes had Deutronopia (13%), 8 eyes had Protonopia (10%), 6 eyes had combined Tritonopia and Protonopia (8%), 4 eyes had combined Deutronopia and Tritonopia (5%), 2 eyes had Protonopia and Deutronopia (3%) and 18 (23%) had no defect. Among 80 phakic eyes, 72 (90%) had no defect while Deutronopia was found in 1(1.25%) eye and Tritanopia in 7 (9%) eyes. Conclusion: Tritonopia was mostly present in Pseudophakic group while majority of Phakic group do not show color vision defect.