Wydanie 2/2005

Obliczanie wartości wszczepów wewnątrzgałkowych w oczach po wcześniejszej chirurgii refrakcyjnej

Calculating Intraocular Lens Power in Eyes that Have Had Refractive Surgery

Stanisława Gierek-Ciaciura, Beata Bubała-Stachowicz, Monika Szymkowiak

Katedra i Klinika Śląskiej Akademii Medycznej w Katowicach Kierownik: prof. dr hab. med. Ariadna Gierek-Łapińska


Summary: The purpose of his article is to discuss the major reasons for postoperative hyperopia after cataract surgery following refractive surgery and to illustrate potential methods for improvement of intraocular lens power prediction after keratorefractive surgery based on exemplary model calculations. The corneal power changes measured by automated keratometry and corneal topography analysis are reported to underestimate corneal flattening after keratorefractive surgery. To avoid underestimating the IOL power and hyperopia after cataract surgery the measured corneal power must be corrected. We compare the magnitude of error among different methods of measuring the actual corneal power changes after keratorefrative surgery, and develop a formula to adjust the measured corneal power to improve the prediction of actual corneal power.

Keywords: refractive surgery, intraocular lens, cornea, spherical equivalent, corneal power, cataract


powrót

REDAKCJA NIE UDZIELA PORAD MEDYCZNYCH I NIE POŚREDNICZY W KONSULTACJACH PACJENTÓW Z LEKARZAMI