Korean Journal of Optometry and Vision Science 2007;6(1):43-48.
Published online December 20, 2007.
굴절수술대상 근시 환자에서 동공중심과 시축의 위치적 상관관계
이호영, 허준, 최봉준
1Department of Ophthalmology, Inje University College of Medicine, 2Lee Eye Clinic, Busan, Korea
The Positional Relationship between the Pupil Center andthe Visual Axis of Myopia Patients
Ho Young Lee, Jun Her, Bong Joon Choi
Abstract
Purpose
To evaluate the positional relationship between the pupil's center and the visual axis in myopia patients as a substitute for a refractive surgery. Methods: We used NIDEK OPD-SCAN (Nidek, Gamagori, JAPAN) and an ORBscan IIz (Bausch&Lomb, USA) instrument to examine both of the eyes of 50 myopia patients and research various factors including the distance and direction from the photopic pupil center to the visual axis, pupil diameter, refractive power, size of the cornea, anterior chamber depth, and the correlation between the distance from the photopic pupil center to the the visual axis (PDist). Results: The average distance from the photopic pupil center to the visual axis was found to be 0.198± 0.107 mm, the photopic pupil diameter was 3.788±0.648 mm, and the mesopic pupil diameter was 6.353± 0.741 mm. The distance from the photopic pupil center to the visual axis showed a meaningful correlation with a spherical equivalent, and as the spherical equivalent increased, the distance from the photopic pupil center to the visual axis increased (p<0.01). Conclusions: We suggest that, as the severity of a patient's myopia increases, the distance from the photopic pupil center to the visual axis increases. We believe this should be taken into considerations prior to refractive surgery. (Korean J Optom Vis Sci 2007;6(1):43-48)
Key Words: Refractive surgery, Pupil center, Visual axis
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