Journal of refractive surgery (Thorofare, N.J. : 1995) · 1995
Digital system measurement of decentration of Worst-Fechner iris claw myopia intraocular lens.
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Pérez-Torregrosa V T, Menezo J L, Harto M A, Maldonado M J, Cisneros A
Аннотация
BACKGROUND: Topography measures the centration in refractive and corneal refractive surgery, but until recently there was no effective method to measure decentration in intraocular lens (IOL) implantation.
PATIENTS AND METHODS: We measured the decentration of 22 phakic eyes, in 14 high myopic patients, based upon photographs of the anterior segment using a digital analysis system (IMAGEnet Topcon Corporation 1988, Tokyo, Japan). These eyes had undergone IOL implantation for the correction of myopia with Worst-Fechner iris claw lenses. Decentration was measured with respect to the centers of both the cornea and pupil.
RESULTS: Mean decentration of the IOL center from the cornea center was 0.51 +/- 0.25 mm (range, 0 to 0.8374 mm). When measured with respect to the center of the pupil, the average decentration was 0.47 +/- 0.29 mm (range, 0.182 to 0.9341 mm). A positive correlation between the decentration measurements of the two methods was found (p < .01 indicated statistical significance).
CONCLUSIONS: This digital imaging system (IMAGEnet) accurately measured decentration of IOLs in myopic eyes.
PATIENTS AND METHODS: We measured the decentration of 22 phakic eyes, in 14 high myopic patients, based upon photographs of the anterior segment using a digital analysis system (IMAGEnet Topcon Corporation 1988, Tokyo, Japan). These eyes had undergone IOL implantation for the correction of myopia with Worst-Fechner iris claw lenses. Decentration was measured with respect to the centers of both the cornea and pupil.
RESULTS: Mean decentration of the IOL center from the cornea center was 0.51 +/- 0.25 mm (range, 0 to 0.8374 mm). When measured with respect to the center of the pupil, the average decentration was 0.47 +/- 0.29 mm (range, 0.182 to 0.9341 mm). A positive correlation between the decentration measurements of the two methods was found (p < .01 indicated statistical significance).
CONCLUSIONS: This digital imaging system (IMAGEnet) accurately measured decentration of IOLs in myopic eyes.