الفهرس 
Visual rehabilitationOnly 14 pages are availabe for public view
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Abstract
Background: Keratoconus is a chronic non-inflammatory, bilateral cornea degeneration,usually characterized by localized corneal thinning, visual distortion, corneal steepening, and central corneal scarring.
Photorefractive keratectomy (PRK) is a laser eye surgery procedure intended to correct refractive error of the human eye. The technique permanently changes the shape of the anterior central cornea using an excimer laser to ablate a small amount of tissue from the corneal stroma.
Several combinations of PRK and CXL have been done, sequential approach has been compared with simultaneous approach in form of same day customized PRK immediately followed by CXL. This comparison will be discussed in this literature.
Aims: The aim of the essay was to sequential versus Simultaneous Photorefractive Keratectomy and Corneal Collagen Cross Linking in Keratoconus Treatment.
Methodology: Keratoconus is a chronic non-inflammatory, usually bilateral cornea degeneration, characterized by localized corneal thinning, visual distortion. It is a multifactorial disease involving complex interaction of both genetic and environmental factors that contribute to the disease manifestation.
Conclusion: Sameday simultaneous topography-guided PRK and collagen cross-linking for treatment of keratoconus give better results on visual acuity, keratometry, topography and central corneal thickness than that given by sequential approach.