Diabetic retinopathy is a disease of the retina in diabetics characterized by what features?

Diabetic retinopathy is a disease of the retina in diabetics characterized by what features?

• A. Cataracts due to aging
• B. Detached retina after trauma
• C. Disease of the retina in diabetics characterized by capillary leakage, bleeding, and new vessel formation leading to scarring and loss of vision. Images have 'floaters' and are blurred
• D. Enlarged blind spot due to glaucoma

Answer: (C)

The main concept is how diabetic retinopathy arises from damage to the retinal microvasculature due to long-standing high blood sugar, leading to leakage, bleeding, and, in the proliferative stage, new, fragile blood vessels that can scar and pull on the retina, causing vision loss. In this scenario, leakage from damaged capillaries and hemorrhages occur, while ischemia drives new vessel formation. Those neovascular vessels can bleed into the vitreous, producing floaters, and scar tissue can damage the retina, leading to blurred vision and loss of sight. This combination—capillary leakage, bleeding, neovascularization with scarring and vision loss, plus symptoms like floaters and blur—is characteristic of diabetic retinopathy. The other options describe conditions with different mechanisms (cataracts from aging, traumatic retinal detachment, glaucoma-related visual field loss) and do not reflect this microvascular pathology.

The main concept is how diabetic retinopathy arises from damage to the retinal microvasculature due to long-standing high blood sugar, leading to leakage, bleeding, and, in the proliferative stage, new, fragile blood vessels that can scar and pull on the retina, causing vision loss. In this scenario, leakage from damaged capillaries and hemorrhages occur, while ischemia drives new vessel formation. Those neovascular vessels can bleed into the vitreous, producing floaters, and scar tissue can damage the retina, leading to blurred vision and loss of sight. This combination—capillary leakage, bleeding, neovascularization with scarring and vision loss, plus symptoms like floaters and blur—is characteristic of diabetic retinopathy. The other options describe conditions with different mechanisms (cataracts from aging, traumatic retinal detachment, glaucoma-related visual field loss) and do not reflect this microvascular pathology.