Look for sunglasses marked UV400 or providing 99–100% protection from both UVA and UVB. That is the National Eye Institute’s recommendation for choosing sunglasses. Check the label before narrowing the choice by shape, brand, or price.
Find the protection statement for the actual lenses
Look at the tag or product specifications for the pair you are considering. If you cannot find a clear UV statement, ask the seller to show it. Keep the exact model with the answer, especially when comparing several similar frames.
NEI cautions that expensive designer sunglasses do not necessarily offer better UV protection than less expensive pairs. It recommends the same UV label check either way. Read NEI’s sunglasses buying guidance.
An unmarked pair does not give you a clear answer. NEI notes that many optical shops can test lenses for UV blocking. Ask whether that service is available before making a trip; do not assume every office provides it.
Ask about glare after checking UV
NEI describes polarized lenses as useful for reducing glare from snow or water. Its UV protection recommendation is a separate part of the buying guidance. See NEI’s explanation of lens use and protection. When a product says “polarized,” still ask where its UV protection is documented.
Make a two-pair comparison note with one line for each: model name → UV statement → polarized or not → fit concern → complete price. This keeps the conversation specific when one option has a longer feature list than the other.
Try the fit, not just the mirror
NEI recommends a comfortable pair that stays in place and limits light entering around the top, bottom, and sides. It also notes that the UV index can be high on cloudy days. Read the fit and outdoor-protection guidance.
For prescription sunglasses, ask about the lenses that will be supplied in your finished pair, not just the sample lenses in the display frame. Put that lens name and its documented UV protection beside the quote. That gives you something specific to check when the order is ready.
Bring your pair and your questions
Riverton Family Eye Care offers prescription sunglasses and optical guidance. Bring the pair you use now, or save the model details of a pair you are considering. Contact the office to ask about available options and the appropriate next step.
Sources and further reading
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