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How can I decide the power of glasses?

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The following is an actual conversation between an iCliniq user and a doctor that has been reviewed and published as a Premium Q&A.

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Published At October 17, 2018
Reviewed AtJanuary 4, 2024

Patient's Query

Hi doctor,

I have visited three ophthalmologists, and all of them have prescribed me a different CYL and SPH powers for both the left and right eye. I am confused. I do not know which one is correct. How can I decide the power of the glasses? Please help me.

Hi,

Welcome to icliniq.com.

I understand your problem. You are having a problem in deciding the power of glasses to be made. I can give you the following suggestions. Choose the power which is felt the best when you are undergoing testing. Choose the power which has the most precise vision, with no distortions, with no variations in the size of objects, and there is no eye strain. Most patients will get satisfied with this power. Choose the power which was given to you after verification using dilating eye drops. This test involves instilling dilating eye drops which blurs your vision. You are usually asked to come back to recheck on another day or sometimes prescribed glasses on the same day. This verification decreases the chances of error. An error of 0.25 diopter and an axis shift of less than 5 degrees is not noticeable in most circumstances. So if your glasses differ from each other by only small degrees, you can choose any one of them.

Same symptoms don't mean you have the same problem. Consult a doctor now!

Dr. Manjunath Natarajan
Dr. Manjunath Natarajan

Ophthalmology (Eye Care)

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