Corneal Regeneration After Photorefractive Keratectomy: A …
Photorefractive keratectomy (PRK) remodels corneal stroma to compensate refractive errors. The removal of epithelium and the ablation of stroma provoke the disruption of corneal nerves and a release of several peptides from tears, epithelium, stroma and nerves.
Clearing Up Corneal Haze | Corneal Physician - PentaVision
2024年4月1日 · There are both primary and secondary risk factors for developing corneal haze after PRK. 1,2 Primary: spherical correction, high myopia (>-6.00 D), hyperopia, astigmatism correction (>3.00 D), and prior corneal surgery. Secondary: autoimmune conditions, atopy, dry eye disease, epithelial basement membrane dystrophy, neurotrophic keratopathy ...
Management of Corneal Haze After Photorefractive Keratectomy
Primary risk factors for post PRK haze include spherical correction, astigmatism, and PRK enhancement after previous corneal refractive surgery. Secondary risk factors include dry eye disease, epithelial basement membrane dystrophy, delayed neurotrophic healing, vitamin deficiencies/supplements, ultraviolet (UV) radiation, and ethnic predilection.
Unraveling the Mysteries of Corneal Scarring - Cleveland Clinic
2014年11月18日 · For some people, the search for clear vision free of contact lenses or glasses can lead to an unexpected corneal haze. The culprit, corneal scarring, can be caused by photorefractive keratectomy (PRK) as well as injury, disease or infection, says Steven E. Wilson, MD, Director of the Corneal Wound Healing, Diseases and Ocular Surface laboratory ...
Very Late-Onset Corneal Scarring After Photorefractive ... - PubMed
Purpose: To report two cases with very late-onset scarring of the cornea after photorefractive keratectomy (PRK) induced by cataract surgery. Methods: Case report and literature review. Results: Two patients presented with a subepithelial corneal scar more than 20 years after PRK.
Patterns of late corneal scarring after photorefractive …
1999年3月1日 · The aim of our study was to try and establish a correlation between patterns of late corneal scarring after PRK, final refraction, regression of refractive effect, and degree of preoperative myopia.
Eighty-one eyes had a pre-PRK SE between 26.25 and 29.25 D (high myopia). Follow-up time ranged between 12 and 37 months with a mean of 18.2 months. Intervention: Multizone PRK with the VISX 20/20 excimer laser. Main Outcome Measures: Corneal scarring, final best-corrected visual acuity (BCVA), and refraction.
Very Late-Onset Corneal Scarring After Photorefractive …
2016年1月21日 · Two patients presented with a subepithelial corneal scar more than 20 years after PRK. Scarring occurred within the first few months after cataract surgery. Scar tissue was...
Visual outcomes of sterile corneal infiltrates after photorefractive ...
2020年11月23日 · Post-PRK, corneal lesions after healing may cause a decrease in visual acuity and even higher-order aberrations (HOA) can occur. We have preoperative and postoperative data of corneal HOAs.
Bilateral corneal scarring after LASIK and PRK in a patient with ...
2005年12月2日 · Clinically significant corneal haze is an infrequent complication of refractive laser surgery with an incidence of 1.44% reported in both PRK and LASIK. 1 We report a case of a patient who...