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Diabetes damages the eyes in various ways; the most common conditions are glaucoma, cataracts, diabetic retinopathy (DR), and retinal detachment, which can affect vision and even cause blindness. Its severity is related to high and sustained sugar levels, high cholesterol, duration of diabetes (the longer the duration, the greater the severity), hypertension, smoking, pregnancy, and kidney disease. Hyperglycemia leads to inflammatory changes in the retina, causing deterioration that can become severe or irreversible. It also affects the lens's ability to focus, impairing distance vision (similar to myopia) at high blood sugar levels. Once blood sugar begins to decrease, the opposite...