Colour vision in long-standing diabetes mellitus

Area of Science:

• Ophthalmology
• Endocrinology
• Diabetology

Background:

• Diabetic retinopathy is a common complication of long-standing diabetes.
• Visual impairments, including colour vision deficits, can occur in diabetic patients.
• The relationship between diabetic retinopathy severity, glycemic control, and colour vision requires further elucidation.

Purpose of the Study:

• To investigate the association between colour vision, diabetic retinopathy, and glycemic control in insulin-dependent diabetics.
• To compare colour vision in diabetic patients with retinopathy to age, sex, and social class-matched normal subjects.

Main Methods:

• Assessed 100-hue colour vision scores in 12 long-standing insulin-dependent diabetics with background diabetic retinopathy.
• Correlated colour vision scores with the degree of retinopathy and fasting blood glucose levels.
• Compared colour vision scores and types between diabetic patients and a control group.

Main Results:

• A positive correlation was observed between 100-hue colour vision scores and the degree of diabetic retinopathy.
• A negative correlation was found between colour vision scores and fasting blood glucose levels.
• No significant differences in colour vision scores or types were detected between diabetic patients and matched normal subjects.

Conclusions:

• Colour vision deficits in insulin-dependent diabetics with retinopathy are linked to retinopathy severity and glycemic control.
• Despite these correlations, overall colour vision function may be preserved compared to non-diabetic individuals.
• These findings highlight the importance of monitoring visual function in diabetic patients.