Color Vision in Diabetic and Non-Diabetic Retinopathy Patients
Abstract
Objective: To evaluate the color function in diabetics and non-diabetics.
Method: The study was cross-sectional type and carried out at the Madina Teaching Hospital Faisalabad. Total 58 participants, male and female, aged 35 to 75 years selected using a convenient sampling method. The study took place from September 2018 to February 2019. Color vision was assessed using the conventional Farnsworth D15 test. Retinopathy severity was evaluated with a slit lamp and a +70D lens, following proper patient consent. A comprehensive medical, surgical, ocular, and drug history was taken for each participant. Each pseudophakic eye was tested monocularly, with each participant undergoing the test three times.
Results: A significant correlation was found between color vision impairment and pseudophakic diabetic patients (p<0.05), using Pearson's Chi-Square test. The mean score for color vision using the Farnsworth D15 test was 2.17 ± 1.05, while the pseudophakic group showed a mean score of 1.05 ± 0.116.
Conclusion: Diabetic patients with pseudophakia exhibit color vision defects, particularly affecting the blue axis. Color vision defects are more prevalent in patients with uncontrolled diabetes compared to those with controlled diabetes. Additionally, the severity of color vision defects tends to increase as the retinopathy progresses.
Key Words: Color function, Cataract, Diabetic retinopathy.
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