collect the information about different types of eye defects from your nearest eye specialist or optical shop and write a report
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actually we have three types of defects as i know so 1. myopia 2. hypermetropia 3. presbyopia so the first one is myopia which means near sightedness and the second is hypermetropia which means far sightedness and the last is presbyopia which is the both the and far which occurs at our old age
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