In sickle cell disease, which ocular complication is commonly observed?

• A. Brain: Cerebrovascular accident
• B. Eyes: Retinopathy, Retinal detachment, Diminished vision
• C. Bones: Chronic bone ischemia leading to infection and bone degeneration
• D. Chest: Acute Chest Syndrome

Answer: (B)

Vaso-occlusion in the retinal microcirculation from sickled cells causes retinal ischemia and retinopathy, which is the eye finding most commonly seen in sickle cell disease. The retina relies on end-artery circulation, so it is particularly vulnerable to occlusion. Early changes include microaneurysms, intraretinal hemorrhages, and cotton-wool spots; over time, these can progress to proliferative retinopathy with neovascularization. Neovascular vessels may bleed into the vitreous and can lead to tractional or rhegmatogenous retinal detachment, causing diminished vision. This ocular pattern—retinopathy with potential detachment and vision loss—is characteristic in sickle cell disease, distinguishing it from the other systemic complications listed (such as cerebrovascular events or chest syndrome) that affect different organs. Regular eye exams and treatments like laser therapy for proliferative changes help manage this eye involvement.