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Option 1 : It is this central loss of vision
Concept:
- Macular degeneration is a medical condition that usually affects older adults and results in a loss of vision in the center of the visual field (the macula) because of the damage of the retina. Macula is the area for central vision.
- It is of two types:
- Dry Macular Degeneration - Atrophy of macula and most common type, accounts for 90% of macular degeneration cases.
- Wet Macular Degeneration - leakage or bleeding from choroidal neovascularization.
- The exact cause is not known and believed to have some genetic predisposition.
- Risk factors include increased age, most common in whites, smoking, obesity and metabolic syndrome, exposure to sunlight, severe myopia, and family hisory.
- The most common signs and symptoms are central vision loss, blind spots or scotomas, blurred vision.
- Diagnosis can be made by examination of the eye with dilated pupils, visual acuity measurement, Fluorescein angiography.
- It is treated by photodynamic therapy and transpupillary thermotherapy. These are used to seal the leaking blood vessels in or near the macula.
- First option is true about macular degeneration as there is central vision loss.
- wet macular degeneration is less common. only 10% of cases we can see.
- Dry macular degeneration is more common accounts for 90% of cases.
- Macular degeneration effects the retina of the eye not the cornea.
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