Abstract

P 221

Results of peripheral corneal resection with superficial lamellar keratoplasty in the treatment of pellucid marginal degeneration of a cornea

Ivanovskaja E.
Filatov Research Institute, Odessa, Ukraine

Objective: Pellucid marginal degeneration of cornea (PMDC) results in the loss of ability to work and disability. Surgical treatment of PMDC is very problematic because of thinning area location beside a limb.
Methods: A new surgical method for the treatment of peripheral progressive corneal ectasia is proposed. It includes resection of the thinned cornea in the zone of ectasia as a narrow 1.5 –2.0 mm wide half-moon-shaped band, with subsequent suturing and strengthening of the corneal scar with a peripheral lamellar graft (Patent of Ukraine N10184A, 1996). The method was used in 15 patients (17 eyes) with pellucid marginal corneal degeneration at age 34 - 65 y/o, mean (44.59±12.03).
Results: As a result of the operation, the degree of the astigmatism considerably decreased from (8.48±14.5) dptr to (7.45±3.55) dptr, the sphericity to (45.36±4.09) dptr and the thickness to (0.44±0.02) mm, that improved visual acuity to 0.3 – 0.85 (69.2%). In follow-up from 2 to 10 years the effect of the operation remained stable in all cases.
Conclusions: Our clinical results have shown that excising the strip of the thinned cornea in the area of its maximal tension restore corneal configuration and considerably reduce the degree of astigmatism in more prominent its part. The postoperative scar strengthening by a lamellar graft promote stability of operation effect.

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