Flaxel Christina J, Choi Young H, Sheety Michael, Oeinck Stephen Christopher, Lee Joe Y, McDonnell Peter J
Doheny Retina Institute of the Doheny Eye Institute, University of Southern California Keck School of Medicine, Los Angeles, California 90033, USA.
Ophthalmology. 2004 Jan;111(1):24-7. doi: 10.1016/j.ophtha.2003.05.016.
To demonstrate axial length changes associated with anterior shift of the lens/iris diaphragm and anterior vitreous base in human cadaver eyes during suction ring application preceding Moria LASIK, and to propose that these changes may be associated with anterior retinal tears.
Human eye study.
Eight human eye bank eyes ranging in age from 65 to 73 years. Two eyes had a history of intraocular surgery involving cataract extraction and intraocular lens implantation.
Measurements of intraocular pressure via internal manometer and Tono-Pen, anterior chamber depth, and axial length before and after application of a Moria LASIK suction ring.
Change in anterior chamber depth and axial length after Moria LASIK suction ring application.
Axial length increases (mean change = 1.125 mm, P = 0.02) after application of the suction ring, whereas anterior chamber depth shows no significant difference (mean change = -0.01 mm, P = 0.98), suggesting anterior movement of the vitreous base resulting in traction on the anterior retina.
Axial length increase with anterior displacement of the vitreous base during suction ring placement might predispose susceptible eyes to anterior retinal tears during and after LASIK.
证明在Moria准分子激光原位角膜磨镶术（LASIK）术前应用吸引环期间，人尸体眼的眼轴长度变化与晶状体/虹膜膈及前部玻璃体基底部向前移位有关，并提出这些变化可能与视网膜前部撕裂有关。
人体眼研究。
8只来自眼库的人眼，年龄在65至73岁之间。其中2只眼有白内障摘除及人工晶状体植入的眼内手术史。
应用Moria LASIK吸引环前后，通过眼压计和Tono-Pen测量眼压、前房深度及眼轴长度。
应用Moria LASIK吸引环后前房深度和眼轴长度的变化。
应用吸引环后眼轴长度增加（平均变化=1.125 mm，P = 0.02），而前房深度无显著差异（平均变化=-0.01 mm，P = 0.98），提示玻璃体基底部向前移位导致对视网膜前部产生牵拉。
在放置吸引环期间玻璃体基底部向前移位导致眼轴长度增加，可能使易感眼在LASIK术中及术后发生视网膜前部撕裂。
