How Do You Convert Your Contact Lens Prescription to Something Like 20/200?
April 10th, 2010 | See the Top Answers to this Question Below
My current prescription is -5.00 (high I know). I know that yoyou can’t really convert it accurately but what’s a rough approxI amation? 20/100? 20/200? 20/300?
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Assuming your eyes are normal aside from the myopia , you are most likely in the 20/400 range..but that could vary more if you have any astigmatism, or even your pupil size can affect it.
its amazing this same question can come up so many times per day.
Provided that your eye is perfectly healthy -5.00 is the power your eye needs in front of it so that it can see 20/20. Without any correction your vision will be counting fingers (which is less than 20/400).