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NR. 2(I)/2005
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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 |
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| 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. |
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| Key words: |
refractive surgery,
intraocular lens, cornea, spherical equivalent, corneal
power, cataract. |
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