Comparison of Pattern and Evolution of Visual Field Defects between Non Diabetic and Diabetic Patients with Primary Open Angle Glaucoma

Visual field defects pattern in diabetic patient with glaucoma is different from patients with glaucoma alone. Inferior visual field defects are more common in patients of primary open angle glaucoma with diabetes and superior visual field defects are more common in patients of open angle glaucoma alone. These superior defects may result from less structural support to the nerve fibre in the inferoperipheral region of the lamina cribrosa. It is stated that a vascular factor, attributable to diabetes, may influence glaucomatous optic nerve damage, thus creating a difference in the pattern of visual field loss in patients with primary open angle glaucoma.