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How well does the UV coating on prescription eyeglasses protect the eyes?

UV coatings on prescription clear lenses are as effective as those on sunglasses. It is not the dark tint that is important. Plastic lenses need to have a UV coating applied. Polycarbonate lenses block UV rays without an additional coating.

UV rays are involved in the development of cataracts, eye-surface problems like pterygia and pingueculae, and macular degeneration. UV-protecting lenses may reduce your risk of developing one of these problems.

If you purchase nonprescription sunglasses, make certain that they block 100 percent of the UV rays. Dark glasses that do not filter UV light may actually put your eyes at greater risk because your pupils may remain larger, thus allowing more unfiltered UV rays to enter.

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Important: This content reflects information from various individuals and organizations and may offer alternative or opposing points of view. It should not be used for medical advice, diagnosis or treatment. As always, you should consult with your healthcare provider about your specific health needs.