The variables that work perfectly together to give you normal vision without requiring glasses or contact lenses are:
This means that either of the two may apply: the surface of the cornea may be overly curved or the length of the eyeball maybe too much.
This means that either the surface of your cornea is not curved enough or the eyeball is too short.
This means that the surface of your cornea is non-spherical thus it does not focus objects equally on the retina.
PRK (photorefractive keratectomy), LASEK (laser epithelial keratomileusis), and epi-LASIK (epithelial laser in-situ keratomileusis) use excimer laser to reshape the cornea thereby, these surgeries allow light to focus on the retina and correct a person's vision.
In these procedures, the top layer on the surface of the cornea (epithelium) is removed. Then excimer laser removes tissue from the cornea very accurately, reshaping it, without damaging nearby tissues.
LASIK (laser-assisted in situ keratomileusis) is the most commonly performed refractive procedure / laser eye surgery to treat myopia (nearsightedness), hyperopia (farsightedness) and astigmatism (refractive errors).
Like other types of laser surgery, LASIK reshapes the front surface (cornea) of the eye via excimer laser to enable light entering the eye to focus on the retina without glasses or contact lenses.
In bladeless LASIK — also called blade-free LASIK, all-laser LASIK, or femto LASIK — yoursurgeon uses two different types of lasers for the vision correction procedure.
First, an ultra-fast femtosecond laser (Femto) is used to create a thin flap in the cornea. Next, an excimer laser is used to reshape the underlying corneal tissue thereby, correct your vision. The flap is then returned to its original position and natural healing takes place.
PHAKIC IOL or ICL (implantable collamer lens) are surgically placed clear implantable lenses placed above the natural lens (without taking your natural lens out) to produce clear vision.
They function like permanent contact lens and are a successful and effective alternative to LASER surgical procedures like LASIK. In certain cases like severe myopia these maybe a better option than laser procedures.
On the off chance that you have had a SURFACE PRK, you will have the option to come back to work inside three to four days of medical procedure. In the event that you have had LASIK techniques, you can profit to work for the next day. Eye prescriptions ought to be kept during working hours as taught by the specialist. While most exercises can be continued after this time, the face ought not be set submerged for in any event multi week following LASIK. Care ought to likewise be taken to maintain a strategic distance from any injury to the eye including scouring of the eyes during this period.
For further questions on the surgery, precautions and other topics please feel free to discuss with your doctor.