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Answer :
Final answer:
A patient is considered legally blind at a vision level of 20/200. Severe myopia with a far point of 20.0 cm can be corrected with -5.00 D contact lenses, and laser vision correction aims to achieve a normal vision power of 50.0 D.
Explanation:
This means that what a person with normal vision can see at 200 feet, a legally blind person would have to stand 20 feet away to see the same detail. Beyond the mere numerical value, there are other criteria involving visual field restrictions that may also determine legal blindness. It's essential for a patient with a far point of 20.0 cm, indicating severe myopia, to get the correct power of contact lens to correct their distance vision. In this case, a contact lens with a power of -5.00 D is suitable for the correction, when placed on the eye. Thus, for vision correction procedures like laser vision correction, the reduction in eye power will lead to a resolution to a normal distant vision power of 50.0 D.
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