what's ORTHOK CRT (night only contacts) risk and side effect?

Question

Thanks

Answer 1

Oxygen deprivation changes, corneal abrasions, irregular corneal distortion, eye infections, are the principle adverse effects that might occur.

What the risk of those problems are...
The infection risk is about the same as with other contacts.
(that depends a lot on compliance with good hygiene)

The others will be pretty rare, but potentially distressing if they occur.
A lady worried about the double vision in her son's eye from OrthoK asked a related question recently, and quoted yet another case.

Answer 2

same risks as most other types of contact lens wear. no MORE risk than those, IMO. probably less risky IMO than extended wear soft lenses b/c the ortho-k lenses are being removed daily and cleaned.

some risks: increased risk of infection (although slight), increased risk of temporary corneal damage or distortion (key word is temporary).

i read the case in the link from the other question. AFAIK ortho-k has *NO* (zero) permanent effects. a person with monocular diplopia after ortho-k IMO must have had some occult or undiagnosed corneal problem like keratoconus. ortho-k does not cause permanent reshaping, and therefore cannot be the cause of intractable monocular diplopia. has to be something else.