Relationship between Clinical History Method and Orbscan II for Measuring Corneal Power after LASIK
Journal of the Korean Ophthalmological Society
;
: 581-588, 2005.
Article
in Korean
| WPRIM
| ID: wpr-186678
ABSTRACT
PURPOSE:
To evaluate the relation between clinical history method and Orbscan II for corneal power measurement after laser in situ keratomileusis (LASIK).METHODS:
A total of 77 consecutive eyes of 43 patients who were treated with LASIK for myopia were followed up for at least 6 months. Corneal power by clinical history methods (CK) was compared with 3.0 mm zones of simulated keratometry (Sim-K), with 0.5, 1.0, 1.5, 2.0 and 3.0 mm zones of axial power maps (AP) and with 2.0, 3.0, 3.5, 4.0 and 5.0 mm zones of total optical power maps (TOP).RESULTS:
Sim-K and all AP-map zones using Orbscan II were significantly higher (P<.001) than the CK value, while all TOP-map zones were significantly lower (P<.001) than the CK value. Among them, 3.0 and 4.0 mm TOP-map zones showed the highest correlation with the corneal power by CK (r2=0.889, P<.001; r2=0.889, P<.001). The correlation was higher with 3.0 mm TOP-map zone (r2=0.800, P<.001) than with 4.0 mm TOP-map zone (r2=0.793, P<.001) in high myopia patients.CONCLUSIONS:
Although 3.0 and 4.0 mm TOP-map zones of Orbscan II were correlated highly with the CK value, these correlations were relatively low in high myopia patients and 3.0 mm TOP-map zone was better correlated than 4.0 mm TOP-map zone in these patients.
Full text:
Available
Index:
WPRIM (Western Pacific)
Main subject:
Keratomileusis, Laser In Situ
/
Myopia
Limits:
Humans
Language:
Korean
Journal:
Journal of the Korean Ophthalmological Society
Year:
2005
Type:
Article
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