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Crescentic lamellar keratoplasty reduces astigmatism in peripheral corneal disease
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CHICAGO — Peripheral crescentic lamellar keratoplasty reduced severe corneal astigmatism and corneal distortion, resolved accompanying ectasia and provided good visual acuity in patients with peripheral corneal disease, according to a speaker here.
“We are looking at restoring integrity and anatomy by tectonic reconstruction of the peripheral cornea,” Donald Tan, MD, FRCS, FRCOphth, said at Cornea Subspecialty Day preceding the American Academy of Ophthalmology meeting.
Donald Tan
According to Tan, the main problem is disease progression because it could lead to secondary infection and astigmatism.
In a study of compressive lamellar keratoplasty to treat severe corneal astigmatism, Tan and colleagues found 50% of eyes required a second graft patch, and globe integrity was preserved in 88.5% of cases.
“In peripheral lamellar keratoplasty, C [crescentic]-shaped grafts can effectively restore tectonic integrity while maintaining a reasonable corneal contour to preserve good visual acuity,” Tan said.
Compressive patch grafts can successfully resolve accompanying ectasia and reduce corneal distortion and astigmatism, according to Tan.
Tectonic reconstruction of the peripheral anatomy without replacement of the central cornea and the ability to perform with small-sized perforation are the advantages of the peripheral lamellar C-shaped grafts, Tan said.
Disclosure: Tan has no relevant financial disclosures.