Diving with glasses or contacts (and prescription masks)
You can't wear glasses under a mask — but you have good options. Here's how prescription masks and contacts work underwater, and what they cost.
If you wear glasses, one of the first questions about diving is a practical one: how will I see anything down there? Glasses simply don't fit under a dive mask, but that's not a barrier — divers who need vision correction have several reliable options. Here's how each works, the trade-offs, and roughly what they cost. For anything about your eyes specifically, your optometrist is the right person to ask.
Why glasses don't work under a mask
A dive mask needs to seal flat against your face to keep water out. The arms of a pair of glasses break that seal and would let water in, so wearing them underneath isn't an option. The fix is to put the correction into the mask or into your eyes instead.
Your main options
1. Contact lenses under your mask
The simplest route for many people: wear your normal contacts under a standard mask. Soft lenses are generally the practical choice for diving. The main thing to manage is the small risk of losing a lens if your mask floods — so close your eyes when clearing your mask, and many divers prefer daily disposables so a lost lens is no big deal. Ask your optometrist whether contacts suit you for diving.
2. A prescription dive mask
You can buy a mask with corrective lenses built in. There are two broad types:
- Drop-in / pre-made corrective lenses: the mask takes standard corrective lens 'powers' close to your prescription. Affordable and widely available, but only in set increments, so the match may be approximate.
- Custom bonded lenses: an optician bonds lenses ground to your exact prescription onto the mask. Pricier, but ideal if your prescription is strong, has astigmatism, or differs between eyes.
3. Rental as a stop-gap
Some dive centers keep a few pre-made corrective masks for hire. Handy for a first try, but the choice is limited — fine for a Discover Scuba dive, less so if you dive often.
If your vision is hard to correct, get advice first
Strong prescriptions, big differences between your two eyes, or astigmatism can be tricky with off-the-shelf options. Talk to your optometrist and a knowledgeable dive shop before buying, so you end up with a mask you can actually see through. Underwater is the wrong place to discover the correction is off.
What it roughly costs
Costs vary a lot by type and region, so treat these as broad orders of magnitude, not quotes. Pre-made corrective masks are the budget end; custom bonded-lens masks cost noticeably more because of the lab work; contacts add only their normal ongoing cost. If you dive regularly, a prescription mask you own usually beats relying on whatever a center has for hire.
| Contact lenses under a standard maskJust your usual lens cost; dailies are popular | Lowest add-on |
| Pre-made / drop-in corrective maskSet lens powers, approximate match | Budget |
| Custom bonded-lens maskGround to your exact prescription | Premium |
| Rental corrective mask (per trip)Good for a one-off try dive | Low, but limited choice |
Where this fits your dive budget
Vision correction is one of those easy-to-forget line items that turns a 'cheap' dive into a slightly bigger number. We flag it alongside the other small costs that quietly add up — better to plan for it than be surprised.
A prescription mask is one of several gear decisions worth thinking through — see renting vs buying dive gear and the hidden costs of scuba diving. New to it all? Start with Discover Scuba vs Open Water.
Bottom line: poor eyesight is no reason to skip diving. Contacts under a standard mask suit many people, a pre-made corrective mask is an affordable upgrade, and a custom bonded mask is worth it for strong or unusual prescriptions. Ask your optometrist what fits you, and you'll see the reef as clearly as everyone else.