On 12/11/2023 at 12:24 AM, bvanant said:

I think you might be underestimating the need for good distance vision. I have a need for both distance and close correction and have a mask from Prescription Dive Masks in San Diego, works like a charm.

BVA

I've also had bifocals made from the same shop.
They are so good and useful (and expensive) that when I cracked the frame of my mask (due to stupidly placing the mask on my head and having it slide off onto a concrete pad) I sought out the same mask to move the prescription front glass intact from old to new mask.

"I have a friend who had tri-focals done a while back, I believe he had them changed to mono-focals, apparently a common side effect is visual disturbances at night, some people get used to them and some don't.  There is also an enhanced depth of field option which keeps a wider range in focus. "

I am quite skeptical of this. IOLs can be removed and replaced, but this is both tricky and quite rare. My opthalmologist says that while he does 600 to 700 implants a year he does one replacement every 7-8 years and then only if the original IOL has moved.

I just had both eyes done, great distance vision, sucky reading. One interesting observation, I had bad astigmatism and I still have some but it has rotated 90 degrees.

Cheers

Bill

I can highly recommend Prescription Dive Masks in San Diego USA.

I have a prescription just over +5 on one side with some spherical and +2 on the other.

They made me a single vision for the +5 side and a bi-focal on the other for gauge reading to go in my Cressi Big Eyes Evo.

Honestly it's like being 20 again.

Not cheap but worth it.

The only drawback is I spent some time getting lost on dive sites which I know well, it turns out that they don't actually look like what I thought they did when everything was fuzzy.

There is a company in Australia that offer the same product line and another called Dive Sight in Sheffield but neither of them replied to my enquiry. There's also a couple of companies that I subsequently found in Poland and Slovakia.

On 5/10/2025 at 3:27 AM, bghazzal said:

I saw / posted these above last January when they showed up - There's no real reason they shouldn't work.

However, there's no real reason to not DIY them either, especially if you have access to cheap, powerful plastic readers. They just work great, and it will be a more flexible solution.

I happen to be in the wonderful land of Daiso 100-yen stores, so can pick up readers up to +5 for 100 yen (+10 yen tax).

I then DIY it (remove the temples, attach landyard), and no real reason to do otherwise.

My current homegrown model looks like this these days:

cheers!

Golden years macro photography:

1:1 magnification, 0:1 vision.

2 hours ago, Davide DB said:

Golden years macro photography:

1:1 magnification, 0:1 vision.

Looking very good!!

I'm still trying to figure out the best magnification on these. I have multiple strength readers, but as with closeup diopters, it's a trade-off between, errr, minimal focus distance and magnification.
The stronger ones will have more magnification but this also means one's face will need to be closer to the screen, weaker ones will have a longer MFD, but less magnification.

I guestimate my eyes are usually around 30cm from the screen, and I think something like +3 seems to hit the sweetspot for me - issue is I've only compared them on land, and water does affect things already.

Edited Wednesday at 12:57 AM2 days by bghazzal

3 hours ago, bghazzal said:

I'm still trying to figure out the best magnification on these.

This are the strongest I could find: +3.5 even if on land I use +2.5. Today is first time I use them. Let's see what happens 🤓

Vintage eyes require precision tools!