Eyeglasses Post Surgery
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I'm very nearsighted: -850 left & -700 right (+175 farsighted). Before my surgery I thought all I need to do is pop out the eyeglass lens for the left IOL eye and I can resume wearing eyeglasses. Wow was I wrong! It was the Twilight Zone revisited. Anyone else has this experience?
0 likes, 9 replies
Night-Hawk Eye-Kan-Sea
Posted
Yeah I've heard that you will have problems with eyeglasses if the power difference between the two eyes is greater than 2D, due to the difference in image size from each corrected eye. That happens because the eyeglass lens is so far away from the cornea in the eye.
One solution is instead of eyeglasses correcting only one eye after cataract surgery, to use a contact lens in the no-IOL eye since the contact sits on the cornea of the eye, it won't produce a much different size image so can work with the corrected IOL eye.
Eye-Kan-Sea Night-Hawk
Posted
That's correct. Unfortunately I have tried wearing contacts a few times in the past with no success. The eyes get bloodshot. Don't think the doc will like that. Heard that if you wear contacts before 40, the eyes will adapt. If you try wearing them after 40, the eyes will reject them. I'll settle with mono vision in the IOL eye. Fortunately I don't drive so no problem. It's a new freedom to rid the eyeglasses.
at201 Night-Hawk
Posted
What always surprised me when I used to get prescription glasses as a backup (I normally used contact lenses) is that a vast majority of the doctors or their assistants never paid any attention to this fact when they prescribed the glasses. I had to specially request a prescription with smaller difference between the 2 eyes. That provided the best distance vision in only one eye, but for me that was not an issue because I was used to blended vision or monovision.
Night-Hawk at201
Posted
Up until my right eye cataract started affecting that eye's vision making it more near sighted, my eyes had very close prescriptions, high astigmatism (2.5-2.75D) and slight nearsighted power (-0.75D).
But in the past year or so, with the right eye cataract causing increased nearsightedness (up to -2.50D) the difference between the eyes is now close to the -2D point and I could feel a little strangeness wearing eyeglasses with that much difference. With just a little less difference I was used to it OK, so I guess how much difference an individual can withstand varies, for me its probably around -1.5D max for comfort.
If my right eye gets corrected near the -0.25D target with little residual astigmatism, then new eyeglasses with the left eye's current Rx (-0.75S -2.00C x178) might work for me since that would be close to an average -1.5D difference, though I would probably try an RGP contact for the left eye as well since I used to wear them for years up until 4 years ago and got excellent vision with them before the cataract. At least until the right eye heals completely and if it gets a good result, then I would start to think about doing the left eye at some point perhaps before its cataract gets worse enough to need it.
Eye-Kan-Sea Night-Hawk
Posted
Good info. Thanks.
Right now the difference between the right and left eye with eyeglasses is -400d. Vision is cockeyed. Can't see properly. After I get the other eye done, then I'll make sure the difference is only -1.0d. Good point.
As you pointed out, the staff or maybe even the doctor isn't aware that the -4d difference doesn't work.
at201 Night-Hawk
Posted
Night-Hawk at201
Posted
Yes reducing the left eye Rx to 0D may be a good option.
I've actually tested that before with an extra pair of eyeglasses I got over a year ago with that exact Rx for the left eye.
It does work OK for computer distance vision (about 24" or more) and I still get about 20/25 at 20feet distance since I get better than 20/15 with the -0.75D best corrected Rx in that eye.
Night-Hawk
Posted
at201 Night-Hawk
Posted