Villagita Blog

31 Jul

Glasses or Lenses- What Should I Pick for My Dive trip?

All about scuba diving is to see things and experience the underworld beauty. Every minute under the ocean waters your vision is stuck with the magnificent flora & fauna. Now strikes an alarming question for many with eyesight issues, How to adjust my poor vision while Scuba Diving? Don’t worry guys there are remedies which don’t stop you from diving. Yes! Before that, do you necessarily require an add-on to rectify your vision in the first place? Think!

Magnifying Power of Waters

Vision beneath the water is magnified 25-30%, this property of water aids people who can’t see nearby objects. Thus this condition solves the problem for those who have slight eyesight issues. Eyes are the god given natural camera. It has its own specification of viewing objects. So while wearing a dive mask underwater, it provides an air space just anterior to the cornea. Materials are seen larger as the light passing through the mask and then into the air gap is diverse resulting in 25-30% magnification. This is the mechanism why we see the floors of the swimming pools closer to us where the shades of the mask make it clear.

You may experience the above yourself when you dive, But if you still find difficulties in viewing the pressure gauge, your dive partner hands Signals then you should consider exploring options that suit you to aid your sight.

There are 3 options available for divers who are concern with their eyesight

·       Prescription Masks

·       Contact Lenses

·       Bifocal gears

Prescription Mask

Prescription masks are the best fix for scuba divers with defective Sight. These masks are available at Scuba Equipment manufactures. It is the same process as of going to the ophthalmologist and picking your glasses, here you wait for your unique prescription masks to be made and the both usually price the same. Divers do remember to always carry your normal glasses and your prescription mask. The prescription may be bought in 2 numbers where the other serves in case of emergency.

The next vital thing is to procure a mask that fits you properly, which is not too loose & tight. Leaky masks may ruin your dive trip. There are a couple of types in these masks that use drop-in or laminated lenses or high-index glass lenses; this is determined by the individual’s Prescription. Divers Alert Network (DAN) will help you to the apt one for you. Quality of the corrective lenses used is essential, as its thickness is a factor of the surface area of the lens, decentration and strength of the prescription. High-plus spherical lenses are said to be convex and extend towards the center of the diver’s eye, also divers’ high range correction to their lenses should make sure their masks are with enough volume as they don’t contact the face.

Maintaining and Safeguarding your prescription mask is as necessary as buying the most suitable one, as these prescription masks are not easy to get hold of in all locations.

Contact Lenses

Contact Lenses can be used by divers only with the advice of an ophthalmologist. Divers Alert Network has preferred prescribed Soft lenses over hard lenses. Soft lenses are safer for the eyes. Hard lenses are generally rigid gas-permeable lenses. It leads to eye pain and blurred vision while dives and sometimes after dives when divers are out of water. These pains are caused due to the gas bubbles that are formed between the contact lenses and cornea. Hard lenses also tend to make the eyes extremely dry. Soft contact lenses are larger & wider in Size and they are likely to stay intact to the eyes even when the mask floods.

Contact Lenses are the first choices for divers as they help to see even if the mask is off. Meanwhile the contact lenses cost less than the prescription mask.

Readers & Bifocals

Few fellow individuals need glasses for reading the small alphabets. Some require Bifocals. There are also solutions to fix this for divers who are passionate about Scuba diving.  These Stick-on magnifying lenses can be grabbed from medicinal shops and in online stores for great deals in various specific magnifications. Stick the lenses on the lower part of the mask, don’t worry the glue in the backside is durable and waterproof. These stick-on lenses help divers to view the readings on submersible pressure gauge and to vary the camera settings to capture picture perfect clicks.

When are Bifocals? Bifocals are not for one who has a prescription mask. These are apt add-ons for one’s who have close vision issues and for people who don’t feel like having a prescription mask. Certain groups of divers use both soft lenses and add bifocals to help them to handle their camera option beneath the water. Bifocals aid to have a fun experience by viewing the exotic creature such as a ghost shrimp and the hiding clownfish.

So guys choose what is comfortable for you and always have an extra pair for emergencies. Remember guys as water has natural magnification ability whatever precision you choose go for one that is 0.25-0.5 closer to zero than the actual measure needed. This note is common to all the three listed above. There is no bar to try out Scuba diving for people with eyesight problems, get it fixed and Jump in Guys!

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