What are the various refractive surgeries?
The refractive power of the eye can be changed by any of the three approaches:
- Changing the curvature of the cornea: this is the most popular mode of refractive surgery.
- Removing the natural lens and replacing it with an artificial lens of adequate power: it is similar to a routine phacoemulsification surgery, except that it is done in a clear lens and not a lens with cataract. As it is an invasive procedure and it also increases the chances of retinal detachment in eyes with high myopia, it is not recommended nowadays.
- Putting an additional artificial lens within the eye on top of the existing natural lens: this technique is still not very popular as it is also invasive and may increase the chances of cataract formation.
What are the ways of changing the curvature of cornea?
The commonly used methods for refractive surgery are:
- PhotoRefractive Keratotomy (PRK) : It is being used less commonly nowadays.
- Laser-Assisted In-Situ Keratomileusis (LASIK) :This is the most popular form of Laser treatment.
- LASEK (or Epi-LASIK) :This newer form of treatment may be suitable in some selected patients with very high power.
View Source-: Lasik surgery in vaishali
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