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NR 4-6/2006
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Kalkulacja mocy
implantów soczewek wewnątrzgałkowych u pacjentów po chirurgii
refrakcyjnej rogówki – doświadczenia własne
Intraocular lens power
calculation in patients after keratorefractive surgery –
personal experience
Iwona Liberek2,3, Wojciech
Kołodziejczyk1, Jacek P. Szaflik1, Jerzy
Szaflik1,2
1 Z Katedry i Kliniki Okulistyki II Wydziału
Lekarskiego Akademii Medycznej w Warszawie
Kierownik: prof. dr hab. n. med. Jerzy Szaflik
2 Z Centrum Mikrochirurgii Oka „Laser” w Warszawie
Kierownik: prof. dr hab. n. med. Jerzy Szaflik
3 Z Kliniki Okulistyki Centrum Medycznego Kształcenia
Podyplomowego Szpitala im. W. Orłowskiego w Warszawie
Po. kierownika: dr n. med. Iwona Liberek |
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| Summary: |
Purpose: To assess
the efficacy of intraocular lens power calculation in
patients with previous corneal refractive surgery.
Material and methods: Retrospective analysis of
patients after laser refractive procedures, in whom
cataract removal with phacoemulsification method was
performed. Corneal power, which in conventional
measurements after refractive surgery tends to increase
value and results in postoperative hyperopic shift, were
calculated with five methods, and the results were
compared. To asses IOL power SRK/T formula was used.
Results: Mean spherical equivalent three months
after procedures according to target refraction in
examined patients ranged from –1.0D to+1.75 D. The
difference between obtained and target refraction in 55%
of patients ranged from -0.5D to +0.5D, and in 77% from
-0.75D to +0.75D.
Best results were obtained in calculations performed
with Rossa method. The least effective appeared to be
traditional IOL power calculation method without
correcting factors.
Conclusions: In patients after laser correction
of myopia, value of the measured keratometry should
always be corrected. The most effective is Rosa method
in combination with SRK/T calculation algorithm. |
| Słowa kluczowe: |
kalkulacja mocy soczewek
wewnątrzgałkowych, chirurgia refrakcyjna rogówki,
keratometria. |
| Key words: |
intraocular lens power
calculation, keratorefractive surgery, keratometry. |
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