하사근부착부의 해부학적 구조, 각막직경, 안축장 등이 하사근후전위치 결정에 주는 영향

Abstract

Purpose: This study aimed to find out whether there are relationships among anatomic characteristics of inferior oblique muscle insertion, corneal diameter, axial length and inferior oblique recession landmark.

Methods: Thirty-one Korean cadaver orbits were dissected to expose the full length of extraocular muscles and sclera, and then we measured the length from the recession landmark of inferior oblique to the lateral edge of insertion of inferior rectus and to the inferior edge of insertion of lateral rectus.

Results: The mean of angles between the inferior oblique muscle insertion and lateral rectus direction is 27.9 ±9.0° and the range is from 15 ° to 50°. There is a statistically significant correlation between cord length of 8 ㎜ recession landmark of inferior oblique and angles of inferior oblique insertion with lateral rectus direction. We divided the shapes of inferior oblique insertion into straight and convexed curves. Twelve insertions are straight and thirteen insertions are curved. There is no statistically significant correlation between shape of inferior oblique insertion and cord length from recession landmark. In corneal diameter and axial length, we found correlations with cord length of 8 ㎜ and 10 ㎜ recession landmark of inferior oblique.

Conclusions: We conclud that there are some correlations among anatomic characteristics, axial length and corneal diameter with recession landmark of inferior oblique.