how does orthokeratology and overnight vision correction work?

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My friend briefly mentioned that he uses ok lenses (orthokeratology lenses) and that it’s a part of his daily nighttime routine. Does this even work, and can it be used to fix my occasional micropsia?

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3 Answers

Anonymous 0 Comments

Oh yeah, I have used this for 5 years now I think. Yeah it works. Afaik it is mainly used to treat myopia (near sightedness) and astigmatism but they really are specialised to each person so they might work on more. 1,500 nights of sleeping in lenses. Each night it squeezes on your mishapen eye, over a week an untreated eye becomes perfectly sighted (or really, overcorrected in the morning so that the correction lasts longer). If I don’t wear them one night, my vision will visibly worsen the next day. Feel free to ELI5 to me what micropsia is/what it has to do with eye shape and I might be able to help.

Anonymous 0 Comments

Technically, this lens very gently squeezes the front part of your eye and makes it change shape into what would help it focus the light better. This is only temporary, however. The only permanent method is the surgery.

Anonymous 0 Comments

It does work, I have myopia (I believe it’s called near-sighted?) and astigmatism and have been using them for almost 2 years now. It doesn’t work for hypermetropia though (far sightedness?).

The way it works is the lens is shaped to flatten the surface of the eyeballs slightly. That way, it changes the way the light breaks inside the eye, and corrects the defect your eye had before. Wear them at night and the correction lasts about 36 for me, after that things start getting a halo and being blurry again.

AFAIK it doesn’t work for any other conditions than that, but it might be worth asking your doctor about it at your next checkup. Do make sure to check with your insurance that it’s covered. In my country it’s considered too experimental and therefore is not covered by insurance.