hello. who had monofocal toric or even reg mo offical IOL and was able to see intermediate vision... 2 feet and further...? I understand you must need close up near like your cellphone etc..but a little further? can the long distance monofocal(toric in this case) let you see intermediate decently? like cooking..talking to someone 2 ft away..etc.. thanks!
This is a subject of interest to me as I plan for a monofocal lens in my first eye, and am considering an under corrected monofocal in the second eye. In any case here is one graph that shows the estimated vision of one eye fully corrected for distance. The visual acuity is highlighted in yellow. The distance is in meters and you would have to translate what you consider as intermediate vision to meters to see what you could expect.
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And here is a second graph showing the estimated binocular vision when one eye is corrected for distance and the second eye under corrected by varying amounts. There have been some older studies which have suggested that the best compromise for under correction is -1.5. I have highlighted that combination in the graph.
The current thinking is to go for less monovision especially in older (>65 years) patients. It seems a smaller pupil size (which decreases with age) allows more depth of focus and lower amounts of under correction. If one is younger then -1.5 may be a better tradeoff.
I have intermediate distance in my left eye. computer distance, 2 feet out no problem. my right eye is set for distance. Able to drive without use of glasses. I use cheap readers for close vision. if i am in bright light or sunshine, i can see close with no visual aides. I am over 65, but was told my pupils are not small. At two feet everything is very clear. i have like a mini mono. i am very pleases with my results. I worn glasses since i was a child, it is great to be almost glasses free!
Hello, I can but I am not sure if you mean monofocal set to near or to far? Mine were both set to near. Both toric. My intermediate vision is 2 ft -- I just measured, give or take an inch . Everything is crystal clear. I use glasses for distance but the toric implant makes it clearer but I dont get detail. Computer and phone no problem. Reading books no problem. Reading very small print? I need good light.
I was told if my near vision was made closer than it currently is, I would lose more intermediate. Outdoor bright light is rough even with transitional coating on lens. Im going to have to buy prescription sunglasses.
I have monofocal toric iols...the left set for distance and the right for intermediate. My vision is very good from 2 feet and beyond. I can function without glasses for all of my daily activities, with the exception of close reading. If the light is good and the text is crisp, I can read at a closer distance but my preference is to wear over-the-counter readers.
Anyone with experience from 2 monofocal lenses set to distance ? How close can you still see ?
Very interesting if someone can answer with that experience.
I don´t have monofocals, but in any case I would find it hard to say what I see at what distance. Right after surgery things really close was blurry, but when brain adapted things up close up stopped being blurry. It does not mean that I can see everything up close, but things are not blurry, things just lacks details when they get too close. As an example right after surgery food was very blurry the closer it got to my eyes, and when I was drinking coffee, the coffee cup was really blurry when I lifted it up to drink. Now food and coffee are never blurry, even right up close to my eyes, but it has more details further away. Lighting plays a big role, also with monofocals, in good natural lighting we all see better. That said, I can still read the menu at a restaurant in dim lighting without glasses with my premium lenses. So I think there can be a big difference between what we mean, when we say we have clear vision at a given distance. Surgeons often spilt vision up into 3 distances, far, intermediate and near, and says that a monofocal can cover one of them, and I think that is still the way to look at it, to not get too disappointed - and if you get better results, it is just a bonus :-)
thank you for sharing!
thank you!. I just dont know why my dr is putting both for distance...ugh.. ( I have poor vision and adtigmatism) but would love to have one for intermediate too.!!
hello Ara..dr set mine both for distance. I have all around poor eyesight and astigmatidm.. He wanted me to go for pan optix but I said no, after researching trifocals or multifocal cause more nighttime disturbances.. surgery for first eye in 9 days..With natural lens I'm very near sighted which allows me to read super fine print..plus to txt on phone! Now I will lose that...😪
you are brilliant and soooo informing with such great research! Thank you soooooooooooooo much!!
I just dont know why my dr is putting both for distance...ugh.. ( I have poor vision and adtigmatism) but would love to have one for intermediate too.!!
Your doctor should offer you that alternative, along with the pros and cons of doing it, unless there are reasons why you may not be suitable. You should ask about it before the first eye is done. With monovision it is usually best to have the dominant eye set for distance and the non dominant for nearer vision. However that is not a hard and fast rule, and depending on how the first surgery goes, there may be reasons to switch the strategy. But again all of this needs to be discussed before the first eye is done.
You should be aware that some people do not adapt well to monovision especially if a large under correction (>1.5 or so) is made. I have done monovision with contact lenses with a -1.25 under correction, so I kind of know what I am getting into. Even then I am still just thinking about it. The one advantage of distance monofocal for both eyes is that all you really need for glasses are over the counter reading glasses.
And there is another option that may be attractive to those that have been myopic all their life. That is to use a monofocal lens in both eyes set to allow you to see close up (-3.0 D) with no glasses. Then of course you need prescription glasses to see for distance, and since that would take away the -3.0 for close up, you would most likely need bifocals or progressives to read without taking your glasses off. One potential advantage of that approach would be that the glasses could correct for any residual spherical error and astigmatism.
ayeaye, have you had this done yet? It will flip your visual world if so. The first surgeon told me also that I would lose near vision and "just use reading glasses" But when your whole life is the opposite its something to think about. I went to someone else who recommended I stay near sighted. Thats why you were probably researching here. I too was very near sighted, which I loved, seeing every tiny thing in detail up close. With the IOL implant your cornea loses that flexibility but you can still keep your near vision. You can tell him that is what you want and use glasses for distance since you've been a spectacle user for years anyway?
Ive lost the super power of superfine print reading with naked eye-- I think only those of us who had this know what we miss , but at least I take my glasses off to read or eat or do any of those things us near sighted people do. Mine were set to -1.5. It works. (My distant vision is clearer too since I dont have as much astigmatism anymore) My cataracts were so bad driving was scary.
I review books also and at one point told an author her typeset/font was too light (Ahggg, it was my failing eyesight) so now I'm good enough. Get what YOU want and YOU need.Let them give opinions. If you want your near vision preserved with a monofocal, tell them. I wish you luck and feel your distress.
Superpower is right. -15 and -13.5, I can take off my glasses and hold my hand up to my eye and see what looks like the individual cells. It's like looking through a microscope. I see perfectly clear up to about 2 inches out. :)
I can remember as a child duplicating the small pictures that came with Legos in the 70's, of the "other things" you could build with the same pieces that came with the sets but came with no instructions and the pictures were tiny, because I could take off my glasses and see them well enough to reverse engineer them. I did the same thing with lite brite, didn't pay for the templates but used blanks to make the same pictures because I could count the holes in the tiny pictures. I'll miss the built in microscope, not that I use it often.
I've been thinking -1.5, -.5 myself although there is no guarantee they can hit that, as when I look around the room there is far more intermediate to far then near to intermediate, and I wouldn't mind glasses for close up if I can read things at arms length. Reading your post does make me think about more near though. My vitrectomy is Wed, fighting off a little bit of a cold, hoping I'm ok by Tuesday so I don't need to reschedule, then I will probably have 6 months before I have the cataract to make that decision. The surgeon did tell me she had one form in only 4 weeks once, but felt confident I would have it within 6 months because I do have a small cataract now and the vitrectomy will accelerate the process.
How far can you see with both set to -1.5? What activities require glasses? Can you watch a large screen tv from 10 feet away or drive comfortably? With -.5 in one eye and -1.5 in the other, I'm hoping I'd get a little more range between the 2, or -1 and -2. It really would depend where the first eye lands.
just an fyi, i have -1.50 set in my left eye for intermediate. i see range iof 20/30. my right eye is 20/20. Use reader for reading distance.But to get that super close vision, i would get stronger readers, The benefit if seeing clear out weights the inconvenience of readers!
I also loved going to miniature art shows -- where an entire painting is the size of a postage stamp. Those artists must have near vision. Seeing every vein in a leaf or seed in a flower. Its a different world. I definitely see a 55 inch tv from 10 feet away tho I see it slightly better with glasses. Im thinking of getting a 65 inch and then wont need glasses.
I use glasses for driving, shopping, seeing the back of classrooms, that sort of thing.
I think Ron, the key idea is "all you need are over the counter readers" isnt for everyone. I looked at it as "all I need are glasses for distance". Its all about ones personal perspective :) Glasses are glasses, choose your view. I agree his dr should offer alternatives but I went to one like that who didnt offer the option. Odd.
How far can you see with both set to -1.5? What activities require glasses? Can you watch a large screen tv from 10 feet away or drive comfortably?
If you look at this chart vision with a -1.5 drops to about 20/50 at 3 meters. That is the legal limit for driving in many areas. My thoughts would be that driving would require eyeglasses or contacts for sure. The prime distance for a 1.5 is going to be from about 0.5 to 1 meter. Too close even for watching TV, unless you watch on a laptop or computer.
Hi Ron, . Could you advise the source link of those interesting graphs? . Thanks.