Frequently Asked Questions

Can I buy prescription glasses online with just my prescription?

Yes, you can buy prescription glasses online with a valid, current prescription from an eye exam. You enter the sphere, cylinder, axis, and any add values, plus your pupillary distance (PD). Retailers cannot legally fill an expired prescription, so make sure yours is still valid and see an eye doctor if it has lapsed.

Do I need my pupillary distance (PD) to order glasses online?

Yes, you need your PD to order glasses online so the lenses are centered over your pupils. Some prescriptions include it; if yours does not, you can measure it at home with a ruler and mirror or a phone app. An accurate PD matters most for progressives and stronger prescriptions, where a few millimeters off can cause eye strain.

Is it safe and legal to buy contact lenses online?

Yes, it is legal to buy contacts online in the US, but you must have a valid, unexpired contact lens prescription, and sellers are required to verify it. Buy the exact brand, base curve, diameter, and power your eye doctor fitted. Never wear contacts without a current fitting, and see an eye doctor before switching brands.

Can I use vision insurance to buy glasses online?

Often yes, though how it works depends on your plan. Some online retailers are in-network and apply your benefit at checkout, while others give you an itemized receipt to submit for out-of-network reimbursement. Check whether your plan has a preferred online partner, and confirm your allowance before you buy.

How long does a glasses or contacts prescription last?

Most eyeglass and contact lens prescriptions are valid for one to two years, but the exact length is set by state law and your eye doctor. Contact lens prescriptions often expire sooner than glasses. Retailers cannot fill an expired prescription, so schedule an exam with an eye doctor before yours runs out.

Are cheap online glasses actually good quality?

Cheap online glasses can be perfectly good for many everyday prescriptions, especially simple single-vision lenses. Budget retailers keep costs down with house-brand frames and online-only ordering. Quality gaps show up more with strong prescriptions, progressives, or premium coatings, where paying a little more for better lenses and accurate measurements is often worth it.

Can I order progressive lenses online?

Yes, most major online retailers offer progressive lenses, usually at a fraction of in-store prices. You will need your add power and an accurate PD, and choosing a taller frame gives you a larger reading zone. First-time progressive wearers may want a retailer with a good return or remake policy in case adjustment is difficult.

What is the difference between a glasses and a contacts prescription?

A contacts prescription includes everything needed to fit a lens on your eye, such as base curve, diameter, and a specific brand, while a glasses prescription does not. The powers can also differ because contacts sit directly on the eye and glasses sit in front of it. You cannot order contacts with a glasses prescription alone.

Can I use my FSA or HSA to buy glasses and contacts?

Yes, prescription glasses, prescription sunglasses, contact lenses, and eye exams are eligible FSA and HSA expenses. Many online retailers accept FSA/HSA cards directly at checkout; if not, save the itemized receipt to submit for reimbursement. Non-prescription sunglasses are generally not eligible unless they are prescribed.

Can I return online glasses if the prescription seems wrong?

Most reputable online retailers offer a return, remake, or refund window if your glasses arrive wrong, so review the policy before buying. If the lenses match your prescription but your vision still feels off, the cause may be the PD, an adjustment period, or a prescription change, so check with your eye doctor.

Can I order prescription sunglasses online?

Yes, most online eyewear retailers turn nearly any frame into prescription sunglasses, and many offer polarized or photochromic options. You use the same prescription and PD as regular glasses. For driving, polarized lenses cut road and water glare, while photochromic lenses may not darken fully behind a UV-blocking windshield.

Do you really save money buying contacts online versus an eye doctor?

Often yes, because online contact retailers carry the same brands and run manufacturer rebates and bulk discounts that many clinics cannot match. Savings are largest when you buy a full year's supply at once. Compare the after-rebate price and factor in shipping, and remember you still need a valid fitting from an eye doctor.

Can I buy glasses online if I have a very strong prescription?

Yes, and high-index lenses make it practical by keeping strong prescriptions thinner and lighter. Look for a retailer that offers 1.67 or 1.74 high-index options and lets you enter a precise PD. Very strong or complex prescriptions benefit from accurate measurements, so consider confirming the details with your eye doctor first.

Are blue-light glasses worth it?

It depends on what you expect from them. The American Academy of Ophthalmology does not recommend blue-light glasses to prevent eye damage, and research on whether they reduce digital eye strain is mixed. Some people find them comfortable, but strain is more often eased by an anti-reflective coating, the right screen-distance prescription, and regular breaks.

How often should I get an eye exam before buying eyewear?

Most adults should have an eye exam every one to two years, or more often if you have vision changes, diabetes, or other risk factors, but your eye doctor sets the right interval for you. A current exam keeps your prescription valid for ordering and screens for eye health issues you cannot see yourself.