Luo Y R, Luo W B
Department of Ophthalmology, Sichuan Provincial Hospital, Chengdu.
Zhonghua Yan Ke Za Zhi. 1993 Nov;29(6):362-5.
The superficial apparent width of the corneo-scleral limbus of 39 cadaver eyes were measured to be 1.00 (0.70-1.40) mm at 12 o'clock. Microscopically, the distance from the end of Bowman's membrane to the posterior limbal margin was 1.74 (1.45-1.96) mm in adults; the end of Descemet's membrane was 0.12 mm anterior to the posterior limbal margin; the anterior border of Schlemm's canal was 0.27 mm behind the posterior limbal margin; however, in 1/3 of the eyes, it was anterior to it. Therefore, the surgical corneoscleral incision should be placed at the posterior margin of the limbus and perpendicular to the surface to avoid injury to the corneal endothelium or Schlemm's canal in most eyes.
对39只尸体眼的角巩膜缘表面表观宽度进行测量，12点处为1.00（0.70 - 1.40）mm。显微镜下，成人Bowman膜末端至角膜缘后缘的距离为1.74（1.45 - 1.96）mm；Descemet膜末端在角膜缘后缘前方0.12mm；Schlemm管前缘在角膜缘后缘后方0.27mm，但在1/3的眼中，其位于角膜缘后缘前方。因此，手术角巩膜切口应置于角膜缘后缘并垂直于表面，以避免在大多数眼中损伤角膜内皮或Schlemm管。
