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Post PRK Corneal Haze
The prime reasons that can be correlated to Post PRK Corneal haze are related to eye color and genetic factors. There can be some of the equipment and operative variables that may also play a significant role.
A statistically significant higher haze rate has been shown to be associated with the eyes which are with brown irides in comparison to those which have blue irides. The haze generally does not occur in the eyes which only require a moderate amount of tissue removal that is for those eyes where it is generally less than 6.00 diopters of refractive error. Thus, this is generally a positive aspect for those who only have low myopia. However, haze has generally found to be associated with the procedures of those who generally require higher corrections. The Lasik flap generally provides the patient with a greater level of comfort and it also eliminates the possibility of haze in patients and also leads to quick visual recovery.However, there may be some of the problems that may be created as a result of a thick Lasik flap. These problems include ability to include more detailed ablation profiles possible through some of the newer techniques such as excimer lasers, wave front-guides ablations and flying spot Gaussian beam. The limitation with Lasik could also be relatively thick 100-180 micron flap of corneal tissue on the top of the ablation may occur. In case the patient has a thin cornea, and the Lasik flap is very thick, then it may not be able to find enough space for it.
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