A person is having a diopter number -7 what is the maximum number limit at which he will become blind
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he highest prescription I ever saw was around a -30.00 in one of my patients eyes. This is extremely rare, but can occur. Now, one thing to note is that although prescription levels can rise to extremely high levels, they do not directly correlate with any level of blindness. The key definition of blindness relates to being fully corrected in glasses or contacts, and therefore, if your vision correction helps you see better than a certain acuity level, you are not deemed ‘legally blind’ When you have a higher prescription, with regular plastic lenses, they end up being very thick. If you order the same prescription in a higher index lens, they end up being much thinner and lighter on the face.
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