Eyhance help please
Posted , 30 users are following.
Frustrated. Surgeon is pushing for me to have my Eyhance set to computer distance (66cm) in dominant eye and at near fie non-dominant.
Concerned as I've not read anywhere of using Eyhance for near?
She says it's better to keep near vision as i was myopic before.
Says I'll be able to use computer and read but will need driving/distances glasses.
I see so many of you on here saying your went with distance and can read and user computer. Is that a rare occurrence? How should i proceed?
1 like, 395 replies
kathy30441 kelly99065
Posted
I am also wanting really clear near vision, as I am an artist. I tried using contacts to do monovision, but found that nothing was clear... and my head felt " woozy". Does that mean that a " mini- monovision " would feel the same? I was hoping to be able to see really well for art, cooking, reading in bed, computer screens and the TV...basically, everything inside, glasses free. I have been wearing progressives for years, now, so I just assumed that I would continue to do that for my distance vision. My prescription for distance was 4 in one eye and 4.25 in the other. I also have a prescription for close up, probably about-2, but I see close up best without glasses. Then I can see fine details. With my glasses on, I can't. Suggestions? Please?
RonAKA kathy30441
Posted
Using contacts can simulate mini-monovison but only if the powers of the contacts are correct for doing it. Your dominant eye should be fully corrected for distance. In your non dominant eye the sphere portion of your prescription should be reduced by 1.5 D. For example if your non dominant eye is -4.00 D you would get a contact with a power of -2.5 D. This leaves you -1.5 D myopic. It is not going to give you the close vision of where you are now with -4.00 D of myopia without glasses. But, it is a good compromise. My close eye is -1.4 D and my distance eye is full distance corrected. I get away without glasses 95% of the time. For fine print in dimmer light I put on some +1.25 mild readers. And I have but almost never use progressives that give standard progressive vision in both eyes.
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Originally with full monovision the near eye was under corrected to leave much more myopia than mini-monovision. Instead of leaving you at -1.5 D of myopia they would leave you at -2.50 D of myopia in one eye while having full distance in the other. That can make you feel woozy. I found that even at -2.0 D it was not comfortable. So, you may want to check what powers of contacts you were using to simulate monovision, and if it was too much, then try it again with contacts that leave the non dominant eye at -1.5 D to see if you like that.
Spring1951 kelly99065
Posted
Thanks for reminding me of that..... that is a key factor of which I currently know little about and will have to probe.
Lynda111 kelly99065
Posted
You would probably get more responses if you started a separate thread about yourself
jimluck kelly99065
Edited
The Eyhance set for near is going to give you an extra half diopter or so of super near, for really fine print. That would be useful. Otherwise, you'd need readers for that, probably. It's a question of what set of compromises do you want. There are times, when I need to see something really small really well, I am glad I can take my glasses off and be -6. I probably wouldn't take her advice -- I'm trending away from wanting different targeting for the left and right -- but it's defensible, I feel. I'm thinking of getting both set for intermediate and then wearing progressives for near and far. Or, holding out for the IC-8 (pinhole IOL that gives all distances).
abyz12345 kelly99065
Edited
This topic has been very informative, thanks everyone. I got confused though. I'm scheduled for Eyhance in my non-dominant eye targetting -1.5. I assumed if that target is hit, I can read my phone without glasses. Later my dominant eye would be targeted -0.5.
Is -1.5 indeed sufficient to read my phone? Or would I need to put it at 66cm (which may somewhat work, however it is really not what I am hoping for).
RonAKA abyz12345
Edited
The Eyhance provides about 0.25 D more near vision than a typical monofocal. The normal target for a monofocal near eye is -1.50 D, so that should be quite safe for getting good near vision to read an iPhone. I think your distance eye target is a bit too myopic, and you are putting distance 20/20 vision at risk. The normal target is -0.25 D or close to it.
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You should ask the surgeon to see the IOL power calculation data sheet. It will show the power choices in the range you need with the predicted refractive outcome for each one. They are unlikely to be in nice perfect 0.25 D steps, and picking the best one is a judgement call ideally made between you and the surgeon. Also ideally they will use a modern accurate formula for prediction like the Hill-RBF 3.0.
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Make sure you leave 6 weeks between eyes and get a refractive measurement at the 5 week mark, so you can compare your outcome to what was predicted. The surgeon should also be very interested in that outcome so they can adjust the calculation for the second eye if needed.
phil09 abyz12345
Edited
I think it would be fine. -1.5 D would put your best focal distance about 66cm from your eye, but you would have pretty good vision at distances somewhat nearer and farther than that. You would not need to hold the phone exactly 66cm away.