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After all, LASIK is a completely elective procedure where we are operating on normal, healthy eyes that simply need either glasses or contact lenses to have the best vision, says Dr. Bert.
Long-term contact lens use can lead to alterations in corneal thickness, stromal thickness, curvature, corneal sensitivity, cell density, and epithelial oxygen uptake. . Other structural changes may include the formation of epithelial vacuoles and microcysts (containing cellular debris), corneal neovascularization, as well as the emergence of polymegethism in the corneal endoth
Effects of long-term contact lens wear on the cornea This page was last edited on 9 April 2024, at 16:45 (UTC). Text is available under the Creative Commons ...
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Patients that wear contact lenses will typically need to stop wearing these for a specified time before the procedure. [ 5 ] PRK disadvantages include a longer recovery time for vision in contrast to LASIK which may be between five days and two weeks for blurred vision to properly clear.
An eye examination is needed to determine an individual's suitability for contact lens wear. This typically includes a refraction to determine the proper power of the lens and an assessment of the health of the eye's anterior segment. Many eye diseases inhibit contact lens wear, such as active infections, allergies, and dry eye. [73]
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LASIK can correct myopia up to -12 to -14 D. The higher the intended correction the thinner and flatter the cornea will be post-operatively. For LASIK surgery, one has to preserve a safe residual stromal bed of at least 250 μm, preferably 300 μm. Beyond these limits there is an increased risk of developing corneal ectasia (i.e. corneal ...