Kids’ Glasses and Sunglasses: A Parent’s Buying Guide

Glasses versus sunglasses

Glasses with a prescription are decided by an eye examination, and the lenses are made for that prescription. Sunglasses are a separate product and need to be judged on UV protection, coverage and fit. A listing that mixes the two, for example a decorative frame sold as glasses, may not be suitable for prescription lenses, so ask the seller before you order.

What is the youngest age to wear glasses?

There is no single age. Eye care professionals examine a child and decide whether glasses are needed, at any age. If you have a concern about a child’s vision, book an examination with an optometrist or eye doctor rather than choosing frames first; the frames can then be chosen to match what the examination shows.

Check UV protection on children’s sunglasses

The U.S. Food and Drug Administration advises choosing sunglasses labelled UV400 or 100% UV protection, which block more than 99% of UVA and UVB radiation, and notes that a dark tint does not indicate UV protection. ^[1] The National Eye Institute gives the same label advice. ^[2] Children’s sunglasses sold as fun or novelty items should state UV protection in the listing in the same way; if they do not, ask the seller.

Fit and coverage

Lens width, bridge width and temple length, in millimetres, decide whether a frame fits, and a child’s face changes as they grow, so check the numbers and not just the age range in the title. Our guide to frame measurements explains each one. (How to read frame measurements) Nose pads and temple tips that are adjustable or soft help with comfort on a smaller face.

Coverage matters for sunglasses. The FDA notes that large, wraparound frames may give more UV protection because they cover the entire eye area, ^[1] and the National Eye Institute notes that a snug fit limits light entering from the sides. ^[2]

Materials and durability wording

Children’s frames are often made from flexible plastics, sometimes with spring hinges or a strap. Listings may use words such as unbreakable, flexible or shatter-resistant. Treat these as the seller’s description, and look for what the listing states about the frame material and the lens material. The FDA states that lenses in eyeglasses and sunglasses generally must be capable of withstanding an impact test described in 21 CFR 801.410. ^[3] That is a baseline for lenses and is not the same as a promise that a product cannot break.

Prescription lenses and the order

If a child has a prescription, ask the seller whether the frame can take it, and take the current prescription with you. Strong prescriptions can limit which frames work. Check the return window, whether prescription lenses can be returned and who pays for postage. Children outgrow and break frames, so also check what the seller offers for replacements or adjustments.

A short checklist before you buy

• For sunglasses, UV400 or 100% UVA and UVB is stated in words.
• Lens width, bridge width and temple length suit the child’s face.
• The frame and lens materials are stated, and any durability wording is described.
• The seller can fit the prescription, if there is one.
• The return and replacement terms are clear.

Where to look next

Browse the matching category: kids’ glasses and sunglasses.

• How to read frame measurements
• Polarised vs non-polarised sunglasses
• Glasses frames