Farsighted lens question

[jesse5730]

I too am a +3.5, both eyes. I feel ya, can’t even see what my computer is saying without correction. have you tried contacts? I have found them to be soooooo much better than prescription goggles. I wear a pair of daily’s and thrown them out after a day of diving.

 

[tursiops]

I too am a +3.5, both eyes. I feel ya, can’t even see what my computer is saying without correction. have you tried contacts? I have found them to be soooooo much better than prescription goggles. I wear a pair of daily’s and thrown them out after a day of diving.

My wife also prefers contacts, and she is nearsighted. Very nearsighted, like -8 in one eye and -9 in the other. She wears single-use -6 contacts. One thing she likes is she can see when she takes her mask off, and use cheap sunglasses on the diveboat.

 

[BoatingDave]

The air-water lens in the mask also acts as a bit of a lens, with a strength of maybe -0.5 diopter. So if a near-sighted person needs a correction of (say) -3.0, they might be quite happy with mask lenses of -2.5. On the other hand, if they are farsighted and need (say) +4.0, then they might want to get +4.5 to compensate for the mask.

Totally correct, though perhaps should say "...to compensate for the air water lens"

 

[BoatingDave]

I too am a +3.5, both eyes. I feel ya, can’t even see what my computer is saying without correction. have you tried contacts? I have found them to be soooooo much better than prescription goggles. I wear a pair of daily’s and thrown them out after a day of diving.

I've tried contacts but find that my contacts are very dry and kind of stuck to my eyes after dives. Before I got prescription lenses in my mask it was great to be able to see the boat!

 

[gray_flhxs]

You all are lucky. I am close to +10 in both eyes. I am getting back into diving after 19 years off and have added bifocals a few years ago with a stronger prescriptio0n since I last dived. I can't read my computer's smallest text (just the current time, no big loss) at all so I am going to try the stick on lens approach since I can't get anything better without much difficulty it seems.

I can see other people and hand signals jsut fine. Its a weird situation but not that difficult to deal with. My eyes actually feel naked with the mask on and no glasses.

 

[afieldofblue]

if they are farsighted and need (say) +4.0, then they might want to get +4.5 to compensate for the mask.
(...) Farsighted folks have to over-correct, so the +4.0 fellow in the example above mat need to bump it up a bit.

Sorry to bump an old thread, but is this correct?
Farsighted / presbyopic divers should bump up the prescription?

I remember being taught that objects appear 33% closer UW.

I'm looking into bi-focal lenses, and currently have the following presbyopia:

RIGHT EYE: +1,75
LEFT EYE: +1,50

I'm wondering wheher I should get +2 and +1.5 or +2 for both eyes (most + lenses found are in + 0.5 increments.

Thanks!

 

[Painter]

I use almost the same prescription in my mask that I use in my glasses and it is just fine for me. In the mask,+3 in one eye, +3.5 in the other. My glasses are +3.25 in one, +3.5 in the other.

 

[gray_flhxs]

I am over +9.5 in each eye. The prescription works in the mask but I know my eyes are hard to see. I go back and forth between prescription and non-prescription masks depending on what I am doing.