You have a super strong prescription and scuba dive- what do you do?
One of the biggest rewards for us is when we can help someone with a strong prescription dive when other opticals told them they can’t make a dive mask for their needs. We have produced masks with lenses as strong as -28!
I get phone calls every day from divers who ask if we can use their prescription as it is strong. Most of the time, their prescriptions are what we consider relatively moderate (+4 through -4), and those prescriptions are no issue in really any of our dive masks.
Strong prescriptions than that are not an issue for us (and we routinely make masks with high cylinder powers or prism), but higher power prescription dive masks tend to work better in some masks than other masks.
What is a strong prescription?
When creating lenses for prescription scuba diving masks, we require any prescription with a single vision spherical equivalent of -6 and stronger, or +4 and stronger to use our high index glass lenses. This enables us to produce a thinner lens in this prescription ranges. This is also the line where we start considering what masks can support these stronger lenses without risking the lens touching the diver’s face or other complications.
Best scuba diving masks for stronger prescriptions
Divers and snorkelers do not have to buy a mask from us to install corrective lenses, but in general there are several factors that should be considered when choosing a mask to accommodate stronger prescriptions in dive masks.
- Smaller lens size. This enables us to produce a prescription lens as close to edge to edge as possible without increasing thickness dramatically.
- Deeper skirt. A deeper skirt keeps the dive mask a bit further from the diver’s face preventing issues with lens thickness.
Below are the masks we recommend most often for those with stronger prescriptions which we keep in stock.
Scubapro d-mask ($185 + lenses)
The scuba pro d-mask which can be reviewed in depth in my article here, comes in three sizes to accommodate a wide range of faces. The lenses contain a slight hue to provide color correction at depth and a UV coating to protect your eyes at the surface.
IST m200 Aluminum Frame Mask ($94 + Lenses)
The M200, which is an average fit masks fits those with slightly narrower faces as well as up to a medium/ regular fit. It only comes in one size and the aluminum frame does provide robust support for the mask. We carry the M200 in clear and black skirts as well as several frame colors.
IST m100 Aluminum frame
The M100 is the bigger brother to the M200 dive mask and is a bit larger. Like the m200 we carry it in a black or clear skirt as well as several color options for the frame. We also carry the M100 with color correcting / mirror lenses which can also support stronger prescriptions.
What scuba masks should I avoid with a stronger prescription?
There are no hard and fast rules as each mask and each prescription are different, but in general, as the prescription strength increases, we discourage divers from using the synergy II or frameless masks which are very popular for divers with milder prescriptions. The Atomic Subframe also can have lens thickness concerns with increased prescription strength. These are all very popular masks on our website and for divers in general, and they should absolutely be considered for prescriptions within the more moderate range.
other considerations for snorkelers, swimmers, and divers with strong prescriptions!
If you do not have much astigmatism (you can give us a call to discuss whether this applies to you or not), some of our masks support less expensive stock lenses (available here). Stock lens masks generally support sphere correction from -8 up to +4 without correcting for any astigmatism, prism, or those that need a multifocal lens.
If you are just swimming or snorkeling, our prescription swim goggles and full face snorkel masks can support your exact prescription, including high powers, for a lower price than our glass dive masks.
If you have any questions regarding unique prescriptions or want help picking out a prescription dive mask, don’t hesitiate to reach out!
Why full face diving masks If you need to use communication systems, dive in possibly contaminated water, or just want the ability to breathe through
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