Double Segment Prescription Bifocal Safety Glasses

[Knight Woodworks]

Would appreciate info from anyone using double segment prescription bifocal safety glasses.  Considering a pair for overhead work such as installing crown molding.

I wear Progressive lenses. Tilting my head way back to look through the bottom area of the lenses is a literal pain in the neck.

Thanks,

John

 

[Sparktrician]

Any competent optician should be able to provide the double bifocal lenses.  I used to use them years ago, but now use Zeiss OfficeLenses.  [smile]

 

[Crazyraceguy]

I wear bifocal safety glasses at work all day everyday, but have never seen/heard of the double type for that application. "Regular glasses" yes, but not safety glasses. I would love to hear about it, if someone has seen such a thing.
I understand the pain in the neck. There are some situations where I hold my glasses up, to see without tilting so much. Tilting down a little would be far better.

 

[Sparktrician]

Check out this article.  [smile]  If you work over your head and within arm's length, they'll save you a bunch of neck aches.

 

[Mini Me]

I use mono vision via implanted lenses from cataract surgery and it is the best thing since sliced bread as I do not have to wear glasses for reading or anything else for that matter. I have often wondered if glasses set up that way would be feasible instead of bifocals or even reading glasses. Mine is permanent but a set of glasses could be taken on or off to suit the task in hand. One small issue with mono vision is that depth of field is affected slightly. It is a way out idea but I think worth asking to solve the problem.

To give some context on my case, I was effectively legally blind without glasses or contact lenses before the implants were done.

 

[Doug S]

+1 for mono vision

I have reached an age where I find it difficult to read small print and see things that are close, I started wearing bifocals safety glasses for work but never really got on with them.

My optician suggested trying mono vision in the form of disposable contact lenses. I now wear a +1.75 lens in my left eye which sorts the close up but nothing in my right eye as that eye does the distance and my distance vision is fine.

The brain being the clever thing it is merges the images and everything looks fine, absolute revelation for me! It can take a few days to get used to and apparently doesn't work for everyone but for me it was an instant fix.

Honestly, I can't recommend it enough, feels totally natural to me, It always surprises me how bad my eyesight is when I don't have a lens in.

 

[Mini Me]

I first tried mono vision when it was fairly new and back then the feeling was that not everyone could tolerate it but I took to it straight away. I did what Doug did initially wearing a contact lens in the reading eye for some years until that eye was operated on and the implant done. I used lenses for many years as my glasses were so thick and heavy they began to affect the shape of my face and as I am ugly enough now I did not need to have that happening.  [scared]

 

[Knight Woodworks]

Sparktrician,

Yes, I’m sure getting and glasses would be straightforward. I was hoping for feedback from users.

Which of the Zeiss lenses are you using?

Thank you all for your responses.

John

 

[Sparktrician]

Sparktrician,

Yes, I’m sure getting and glasses would be straightforward. I was hoping for feedback from users.

Which of the Zeiss lenses are you using?

Thank you all for your responses.

John

John,
    I'm using the Zeiss OfficeLenses for in-close and mid-range work, but I am currently using trifocals for out-of-the office/shop activities.  One thing positive to look for is an optometrist that uses the Zeiss i.Profiler machine to really dial in your exact prescription, not the older phorpoter.  It makes a huge difference, plus Zeiss can make lenses to the exact profile that you need.  Unfortunately, I've not found an optician that can make occupational double bifocals from the Zeiss profile. 

 

[Crazyraceguy]

I had LASIK 23 years ago to correct my horrible nearsightedness. It was fantastic, my vision is far better than the typical 20/20, but the Dr was right when he said I would likely still need readers when I passed 50. He missed it by a few years, I was over 55 before it became noticeable.
I use regular reading glasses at home on the computer, etc. but that won't get it at work. Safety glasses are 100% required at all times and it would be great to not have to tip my head back so far.
Some of the machine screens are directly at eye level.

 

[Knight Woodworks]

Sparktrician,

Thanks, that is helpful.

John

 

[Brevergy]

I totally get your struggle with those progressive lenses. It sounds like double segment prescription bifocal glasses could really improve your comfort and efficiency for overhead work like installing crown molding.
This website has a fantastic range of safety glasses, including double segment prescription bifocal options. These glasses are specifically designed to provide clear vision for close-up work without the need to tilt your head back awkwardly. Plus, they offer the crucial eye protection you need in a workshop setting.

 

[Packard]

I had LASIK 23 years ago to correct my horrible nearsightedness. It was fantastic, my vision is far better than the typical 20/20, but the Dr was right when he said I would likely still need readers when I passed 50. He missed it by a few years, I was over 55 before it became noticeable.
I use regular reading glasses at home on the computer, etc. but that won't get it at work. Safety glasses are 100% required at all times and it would be great to not have to tip my head back so far.
Some of the machine screens are directly at eye level.

This only applies to a very small segment of the population, but there is a risk with LASIK that is not well publicized. 

At high altitudes, the LASIK seams can fracture.  This first came to my attention in the 1980s when a failed ascent up Mount Everest lead to several deaths.  One of the climbers had LASIK and went from 20/20 to effectively blind at 26,000 feet.

This would seem like a one in a million fluke, but the risk is was far greater. (I just googled the requirements for vision for commercial pilots.  It has been changed from “un-corrected 20/20” to “either corrected or I corrected.). The FAA almost has it right.

If a pilot with LASIK correction is flying at above 20,000 feet and there is a loss of cabin pressure, that pilot will become effectively blind.

The FAA’s change in rules made the LASIK surgery unnecessary for a pilot to keep his job.  What they should have added that LASIK surgery should be a disqualification.

I wonder what the odds of both the pilot and copilot having LASIK surgery and there is a loss of cabin pressure at cruising elevation.

A long shot, probably.  But one that the FAA should address anyhow.

 

[Packard]

This company produces safety glasses for that exact situation.  Also, you can clip on flip-up/down readers to your own glasses.  That might be cheaper
https://glazzers.com/blog/bifocal-safety-glasses-for-looking-up-close-overhead-at-work/

 

[rmhinden]

Not completely on topic, but I use readers and got a pair of these:

Pyramex Safety Emerge Plus Readers Safety Glasses, Clear Full Reader Lens

I wasn't sure they would work for me, turns out I can see everything in my shop much clearer.  Much better for me than trying to put safety glasses over my readers, or the bifocal types.

About to order a backup pair.

Bob

 

[Packard]

I use readers with 1.00 magnification. Very low power, and very difficult to find.

I only use them in the shop.

Amazingly, the only time I’ve gotten anything in my eye was when I was hand sanding with 220 grit.  I had to go to the emergency room to get it removed.  Just a “teenie, tiny spec” the doctor said.  Plus the antibiotic, and eye drops to ease the discomfort.

 

[Knight Woodworks]

Thanks for all the additional information. Currently I’m using over the counter reading glasses for overhead work. Not ideal, but better than my progressives.

John

 

[rmwarren]

Not completely on topic, but I use readers and got a pair of these:

Pyramex Safety Emerge Plus Readers Safety Glasses, Clear Full Reader Lens

I wasn't sure they would work for me, turns out I can see everything in my shop much clearer.  Much better for me than trying to put safety glasses over my readers, or the bifocal types.

About to order a backup pair.

Bob

[member=66813]rmhinden[/member] Bob I'm not sure I understand these. Are they just a full lens with magnification, so no bifocal?

I use 3M bifocal safety glasses, 2.5 diopter. I do find I see better even looking thru the magnifier portion at 5' distance but I've always thought this was bad for my eyes. Not so?

RMW

 

[rmhinden]

[member=66813]rmhinden[/member] Bob I'm not sure I understand these. Are they just a full lens with magnification, so no bifocal?

I use 3M bifocal safety glasses, 2.5 diopter. I do find I see better even looking thru the magnifier portion at 5' distance but I've always thought this was bad for my eyes. Not so?

Correct, full lens with single magnification.  Not bifocal.

I was pleasantly surprised they worked for me.  I would have expected that wouldn't work for things more than 5' away, but they work for medium distances for me.  Things longer than about 15-20 feet are less clear.  Result is that for most shop operations I can wear them and see what I am doing very well.

Probably related to the current state of my vision.

Bob

 

[Crazyraceguy]

This only applies to a very small segment of the population, but there is a risk with LASIK that is not well publicized. 

At high altitudes, the LASIK seams can fracture.  This first came to my attention in the 1980s when a failed ascent up Mount Everest lead to several deaths.  One of the climbers had LASIK and went from 20/20 to effectively blind at 26,000 feet.

This would seem like a one in a million fluke, but the risk is was far greater. (I just googled the requirements for vision for commercial pilots.  It has been changed from “un-corrected 20/20” to “either corrected or I corrected.). The FAA almost has it right.

If a pilot with LASIK correction is flying at above 20,000 feet and there is a loss of cabin pressure, that pilot will become effectively blind.

The FAA’s change in rules made the LASIK surgery unnecessary for a pilot to keep his job.  What they should have added that LASIK surgery should be a disqualification.

I wonder what the odds of both the pilot and copilot having LASIK surgery and there is a loss of cabin pressure at cruising elevation.

A long shot, probably.  But one that the FAA should address anyhow.

I could believe that if the surgery was fairly recent, but there is no way that 20 year old "seams" could open up. It's not like a "disc" being sewn over a hole and only connected at the edges. That entire "flap" heals and becomes one again. It's more like a patch on an innertube.