Comparison of Refraction-Derived Keratometric Value and Orbscan Corneal Power after Laser in Situ Keratomileusis
Journal of the Korean Ophthalmological Society
;
: 623-628, 2005.
Article
in Korean
| WPRIM
| ID: wpr-186672
ABSTRACT
PURPOSE:
To determine the Orbscan corneal power which gave the best correlation with refraction-derived keratometric value (clinical history method) after LASIK in cataract surgery.METHODS:
A total of 38 consecutive eyes of 19 patients who were followed up for at least 1 year after LASIK were included in study. The refraction-derived keratometric values were correlated with Orbscan corneal power within 1, 2, 3, 4, and 5 mm diameter zones of keratometric, anterior and total selections of mean, axial, tangential and optical power maps.RESULTS:
The Orbscan corneal power of the 5-mm zone optical power total map gave the best correlation with refraction-derived keratometric value. The following regular relationship in linear regression analysis was derived RDKV(refraction-derived keratometric value)=0.9 X OPT5(corneal power of Orbscan optical power total map 5-mm zone)+4.941(r=0.883).CONCLUSIONS:
These results indicate that the corneal power of the 5-mm zone optical power total map was the most appropriate to calculate IOL power in cataract surgery after LASIK when using Orbscan topography.
Full text:
Available
Index:
WPRIM (Western Pacific)
Main subject:
Cataract
/
Linear Models
/
Keratomileusis, Laser In Situ
Type of study:
Prognostic study
Limits:
Humans
Language:
Korean
Journal:
Journal of the Korean Ophthalmological Society
Year:
2005
Type:
Article
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