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How to Choose a Prescription Dive Mask

    Where to begin when choosing a prescription dive mask? Fit and ensuring the seal of the skirt around your face is snug and comfortable are two very important factors when choosing a dive mask in general. In this guide, we will go over different types of lenses, masks, and different features our masks have.

    • What kinds of lenses are there for your prescription dive masks?

    There are different types of lens configurations to know about before going ahead and purchasing your prescription dive mask.

    Single Vision – Single vision will be either a nearsighted or farsighted prescription throughout the whole lens helping see distance.

    Gauge Readers – Readers for close work with your gauges, camera or computer. No correction for distance, the top of the lens is clear/plano.

     

    Bifocals – Bifocal is a lens for distance and also correction for reading.

    We currently offer Single vision and Gauge Readers only.

     

    • What are dive masks made out of?
    The skirt of our masks is made from high grade silicone, not plastic or rubber. Silicone is more durable and comfortable on the face. The prescription lenses on our masks are made from durable tempered glass and are less likely to cause injury to the eye if shattered. It’s very important to get tempered glass lenses because tempered glass can withstand the pressure of the deep ocean depths. All our lenses are pre-ground, meaning there is no custom lens work we can do. Only the options we have are available at our store. If you are looking for a more complex prescription, or high astigmatism, please consider getting custom lenses.

    • What is the difference between diving and snorkel masks?

    Our masks are rated to go to depths of 200 meters. Essentially, our masks are versatile for both snorkeling and scuba diving.

     

    • Can you wear glasses or contact lenses under a dive mask?

    Glasses, we would not advise to wear under a dive mask as it may not be able to seal properly, thus, water getting in and ruining your whole experience. For contact lenses, if water were to get in, you would risk your safety.

     

    • What is a diopter?

    A diopter is a unit of measurement given for the strength, or the refractive power of a lens. The higher the diopter number the stronger the lens is.

     

    • How do you calculate a prescription diopter?

    Please refer to this blog post .

     

    • How do you measure the face?

    Measure from one outer corner of the eye to the next with a ruler straight on your nose bridge. Don't use a measuring tape because that will add width and throw off the measurement. The outer corner of your eye to the next will be your width measurement. The eyebrow to the upper lip area will be your height measurement. All of our product offerings have a width and height measurement, so please check the measurements before purchasing.

     

    • What’s the difference between high and low volume?

    Low volume is going to be a mask that sits closer to your face, advantage is that is that it is easier to clear. High volume is also not difficult to clear but we would advise getting a low volume mask. Luckily, most of our prescription dive masks are low volume models.

     

    • Are dive mask lenses interchangeable?

    Yes, if you purchase a dive mask, as long as we still carry that model, we will have lenses available, should your prescription change.

     

    • How do you stop the mask from fogging?

    Every dive mask's lenses come with a factory seal. You can remove that factory seal by applying toothpaste to both sides of the lenses. Let it sit for 30 minutes and then rinse with warm water. Now your mask is ready to enjoy, you can use your favorite anti-fog formula to keep it from fogging up. We personally like the formulations of Sea Drops or Sea Gold.



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