A member asked:

What are your thoughts? could wearing glasses without grade or refraction index, damage the eyes?

A doctor has provided 1 answer

Unclear question: Not sure what you're asking here. Don't know what you mean by "grade, " and refractive index is a property of all glasses. Please clarify and resubmit your question. Thanks!

Answered 9/4/2016

5.1k views

Thank

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