Phototherapeutic keratectomy

Abstract

Phototherapeutic keratectomy is an excimer laserebased surgical procedure widely performed by corneal surgeons for treating anterior corneal stromal pathologies. Phototherapeutic keratectomy helps by ablating the corneal stroma, thereby improving corneal clarity and smoothening the surface. Transient discomfort and induced hyperopia from corneal flattening are the immediate postoperative concerns. The long-term course is often marked by the recurrence of original corneal pathology and corneal haze formation. Phototherapeutic keratectomy, however, allows for repeat stromal ablation for managing recurrences, as the corneal thickness permits, without affecting the outcome of future keratoplasty. Adjunctive methods such as topical mitomycin-C may be additionally used to reduce recurrence rates. Also, various masking agents such as carboxymethyl cellulose, sodium hyaluronate, and dextran are used in eyes with irregular corneal surface to allow for uniform stromal ablation. Overall, phototherapeutic keratectomy has provided corneal surgeons an additional surgical tool, particularly those residing in developing nations where the availability of donor corneal tissue is an important limiting factor.

Topography-Guided Transepithelial Photorefractive Keratectomy for the Treatment of Persistent and Visually-Significant Adenoviral Corneal Infiltrates

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Topography-Guided Transepithelial Photorefractive Keratectomy for the Treatment of Persistent and Visually-Significant Adenoviral Corneal Infiltrates

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A case of spontaneous avulsion of primary pterygium analyzed with anterior segment optical coherence tomography

“…5 It causes an irregular surface of the cornea, which leads to epithelial breakdown, resulting in symptoms of pain and photophobia. 7 In this case, adhesion of the pterygium head to the cornea might have been weak because spheroidal degenerative materials are deposited within the pterygium tissue, thereby reducing the traction to the cornea so that these situations could facilitate spontaneous avulsion.…”

Combined Trans-Epithelial PRK and PTK for Treatment of Corneal Opacity Following Acanthamoeba Keratitis: A Case Report

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Topography-Guided Transepithelial Photorefractive Keratectomy for the Treatment of Persistent and Visually-Significant Adenoviral Corneal Infiltrates

“……”

A case of spontaneous avulsion of primary pterygium analyzed with anterior segment optical coherence tomography

“…5 It causes an irregular surface of the cornea, which leads to epithelial breakdown, resulting in symptoms of pain and photophobia. 7 In this case, adhesion of the pterygium head to the cornea might have been weak because spheroidal degenerative materials are deposited within the pterygium tissue, thereby reducing the traction to the cornea so that these situations could facilitate spontaneous avulsion.…”

Combined Trans-Epithelial PRK and PTK for Treatment of Corneal Opacity Following Acanthamoeba Keratitis: A Case Report

“……”

Topography-Guided Transepithelial Photorefractive Keratectomy for the Treatment of Persistent and Visually-Significant Adenoviral Corneal Infiltrates

“……”

A case of spontaneous avulsion of primary pterygium analyzed with anterior segment optical coherence tomography

“…5 It causes an irregular surface of the cornea, which leads to epithelial breakdown, resulting in symptoms of pain and photophobia. 7 In this case, adhesion of the pterygium head to the cornea might have been weak because spheroidal degenerative materials are deposited within the pterygium tissue, thereby reducing the traction to the cornea so that these situations could facilitate spontaneous avulsion.…”

Combined Trans-Epithelial PRK and PTK for Treatment of Corneal Opacity Following Acanthamoeba Keratitis: A Case Report

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