|A.||Non-proliferative diabetic retinopathy|
Cystoid macular edema
Central Retinal Vein occlusion
Answer: C. Vitreous haemorrhage
Explanation: Vitreous hemorrhage has an incidence of seven cases per 100,000, which makes it one of the most common causes of acutely or subacutely decreased vision.
The mechanisms of vitreous hemorrhage fall into three main categories: abnormal vessels that are prone to bleeding, normal vessels that rupture under stress, or extension of blood from an adjacent source.
Abnormal retinal blood vessels are typically the result of neovascularization due to ischemia in diabetic retinopathy.
The symptoms of vitreous hemorrhage are varied but usually include painless unilateral floaters and/or visual loss. Early or mild hemorrhage may be described as floaters, cobwebs, haze, shadows or a red hue. More significant hemorrhage limits visual acuity and visual fields or can cause scotomas. Patients often say vision is worse in the morning as blood has settled to the back of the eye, covering the macula.