[Retrospective evaluation of PC IOL power after extracapsular cataract extraction].
OBJECTIVE
Retrospective evaluation of PC IOL power calculation accuracy and comparison of the refractive errors after ECCE resulted from different methods of calculation.


METHODS
The PC IOL power in 100 eyes with senile cataract without significant refractive errors, was calculated using SRK II formula with two different biometers and based on primary refraction. The final IOL power was established by surgeon based on all mentioned calculations (surgeon choice). Half a year after surgery the refractive error was measured. The proper IOL power, which did not require additional correction, was calculated (ideal lens).


RESULTS
48 eyes did not require any distance correction. In 44 eyes small hyperopia (to +2.0 D) appeared and in 8 eyes myopia (to -1.5 D). The smallest error was made in cases where we implanted lenses according to surgeon choice. The average power of ideal lens was 20.32 D. We observed statistically significant difference between both ultrasound biometers.


CONCLUSIONS
The most accurate results were achieved in cases where IOL power was chosen by the surgeon based on SRK II formula and primary refraction. Possible source of errors can be inadequate indications of biometers.
Kałuzny
J J
JJ
Kliniki Okulistycznej AM w Bydgoszczy.
Kołodziejczak
A
A
Czajkowski
G
G
Kałuzny
B
B
D000368:Aged; D000369:Aged, 80 and over; D002387:Cataract Extraction / Q000379:methods*; D005260:Female; D006801:Humans; D007910:Lenses, Intraocular; D008297:Male; D008875:Middle Aged; D011237:Predictive Value of Tests; D012030:Refractive Errors / Q000175:diagnosis*; D012044:Regression Analysis; D012189:Retrospective Studies; D013997:Time Factors; D014792:Visual Acuity