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Hi, I am 22 years old, my eye site is 6.0 and I am using Purccon daily were contact lens science last 3 years (changing every year as my doctor suggested), I still didn't get any problem, but recently I start preparing for some competitive exams due to that I am wearing more than 15 hours, is it safe? How many hours per day one can wear daily wear contact lens?
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Any ways wearing contacts for more than 7 to 9 hours will harm your cornea am chances are high to lead to blindness. Contact lenses reduces oxygen supply to cornea and causes rubbing on the corneal surface which in turn lead to opacity and later ulcer.
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