Laser removes corneal tissue without constructing a flap. Tissue is removed from the corneal surface.
No flap is made, eliminating the risk of ' flap related' complications.
Removing surface corneal tissue can lead to 'hazy vision' in those with a high refractive error ( more tissue is removed). For this reason, PRK is more suited to patients with no more than -6D of refractive error.
The healing process can take several months with refractive changes taking place during that time. The eye will be sore for up to 4 days and there may be some return of the long or short sight over time.
Surface cells are removed
Laser removes corneal tissue
Laser Epithelial Keratomilieusis is similar to PRK, but the corneal surface ( epithelium) is retained and replaced after the procedure.
The healing process is faster than PRK and there is thought to be less haze.
A soft contact lens is worn for 1 week to protect and promote healing.
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