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NR 10-12/2005
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Porównanie
dokładności kalkulacji mocy soczewki wewnątrzgałkowej metodami
SRK II, SRK/T, Holladay i Hoffer Q u pacjentów z
nadwzrocznością, operowanych metodą fakoemulsyfikacji
Accuracy of the SRK II, SRK/T,
Holladay and Hoffer Q IOL power calculation formulas in
hyperopic patients after phacoemulsification
Jerzy Szaflik1,2, Anna
Kamińska1,2, Sebastian Gajda1, Anna
Jędruch1
1Z Katedry i Kliniki Okulistyki II Wydziału
Lekarskiego Akademii Medycznej w Warszawie
Samodzielny Publiczny Kliniczny Szpital Okulistyczny w Warszawie
Kierownik: prof. dr hab. n. med. Jerzy Szaflik
2Z Centrum Mikrochirurgii Oka LASER w Warszawie
Kierownik: prof. dr hab. n. med. Jerzy Szaflik |
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| Summary: |
Purpose: Comparison
of the SRK II, SRK/T, Holladay and Hoffer Q formulas
accuracy, in calculating IOL power in hyperopic patients.
Material and methods: 34 eyes of 22 hyperopic
patients, 15 women and 7 men, at the age from 19 to 85
years old, after phacoemulsification with PCIOL
implantation, operated between 1998 and 2004 were
analysed retrospectively. The power of IOL was
calculated using the SRK/T formula and ranged from 28.5
to 35.0 D. The axial length ranged from 19.6 mm to 21.99
mm. The obtained refraction was measured with
autorefractometer from 9 days to 37 month after
operation, mean 6 month. In addition, the theoretical
target refraction for the implanted IOL was calculated
using the SRK II, Holladay and Hoffer Q formulas and the
differences between the target and obtained refraction
for all the formulas were compared.
Results: The best accuracy of IOL power
calculation was obtained with the Hoffer Q formula. The
Holladay, SRK/T and SRK II formulas gave worse results
respectively.
Conclusions: For the purpose of IOL power
calculation in hyperopic patients the Hoffer Q or
Holladay formula should be chosen from those mentioned
above. Nevertheless, miscalculation exceeding 3D also
happens in case of using them. The use of SRK II and SRK/T
is not recommended. To improve the results other
formulas utilising precise measurements of the anterior
segment should be applied. If it is impossible then
attention should be paid to improving traditional
biometry measurements. |
| Słowa kluczowe: |
moc wszczepu,
nadwzroczność, fakoemulsyfikacja. |
| Key words: |
IOL power, hyperopia,
phacoemulsification. |
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