It would be lovely if you would share one or two related blogs for extra information….

Even though recent advances in material technologies made CL’s more ‘breatheable’, there is always the risk of them clogging up over time/get dirty/or get infected.

Lenses like Purevision, Day & Night, and Biofinity are marketed as ‘sleepable’ for up to 30days.
Others like Air Optix, Oaysis, Avaira can be slept in for up to a week, but the company doesn’t recommend it (prob coz they haven’t researched it – although the material is ‘good’ enough)

In the end, Eye care Professionals have been fitting their Patients with ‘EXTENDED WEAR’ Contact lenses for a long time, so provided you look after yourself and your (correct) lenses, and have regular visits with your eye care prof, then some people can sleep in lenses for up to a month.

http://www.usaeyes.org/lasik/faq/lasik.htm

I work for a nonprofit Lasik patient advocacy. We don’t provide Lasik, but we do provide Lasik information and we certify Lasik doctors’ patient outcomes.

There are too many considerations to list, but I’ll start with some of the major ones:

1) Type of refractive error. Correcting myopia (nearsighted, shortsighted) vision is generally more successful than hyperopia (farsighted, longsighted) vision correction.

http://www.usaeyes.org/faq/subjects/hyperopia.htm

2) Astigmatism. An irregular cornea even with normal astigmatism can be more challenging to correct.

http://www.usaeyes.org/lasik/faq/lasik-astigmatism.htm

3) Amount of refractive error. Myopia over about 8.00 diopters, hyperopia over about 3.00 diopters, and astigmatism over about 2.00 diopters or more than half the myopia/hyperopia are more challenging to correct.

http://www.usaeyes.org/lasik/faq/lasik-bad-vision.htm

4) Thin corneas. Lasik works by reshaping the cornea through tissue removal. The corneas need enough tissue to remain stable.

http://www.usaeyes.org/faq/subjects/thickness.htm

5) Ocular and general health. Some disease or even a family history of disease can elevate the risk for a poor Lasik outcome.

http://www.usaeyes.org/lasik/faq/lasik-faq.htm

6) Expectations. The most that you will gain from Lasik is the convenience of a reduced need for corrective lenses. To attain that convenience, you must be willing to accept some risk. It is unreasonable to expect vision after Lasik to be better than vision before Lasik with glasses. Yes, it happens, but don’t expect it.

http://www.usaeyes.org/faq/subjects/odds.htm

7) The surgeon. More than any other single factor, your choice of Lasik doctor will determine the probability of a good outcome. This is the person who will evaluate these and all other important indicators of your ability to have successful Lasik. The doctor is even more important than the laser. There is no amount of technology that can compensate for an inferior surgeon.

http://www.usaeyes.org/lasik/faq/best-lasik-doctor.htm