Fishman P H, Repka M X, Green W R, D'Anna S A, Guyton D L
Wilmer Ophthalmological Institute, Johns Hopkins University School of Medicine, Baltimore, MD.
Ophthalmology. 1990 Apr;97(4):456-61. doi: 10.1016/s0161-6420(90)32561-7.
Fornix conjunctival incisions in strabismus surgery may provide partial protection against anterior segment ischemia by preserving the perilimbal conjunctival-Tenon's circulation, which is disrupted with limbal conjunctival incisions. Six adult cynomolgus monkeys underwent tenotomies of three or four rectus muscles by making limbal conjunctival incisions in one eye and fornix incisions in the other. Iris fluorescein angiography and slit-lamp biomicroscopy were used to monitor changes. The eyes that had limbal incisions exhibited more severe anterior segment ischemic changes than the eyes that had fornix incisions in every instance of four rectus muscle surgery.
斜视手术中的穹窿结膜切口通过保留角膜缘结膜-眼球筋膜循环，可能为眼前段缺血提供部分保护，而角膜缘结膜切口会破坏该循环。六只成年食蟹猴，一只眼采用角膜缘结膜切口，另一只眼采用穹窿切口，对三只或四只直肌进行腱切断术。使用虹膜荧光素血管造影和裂隙灯生物显微镜检查来监测变化。在每一例四条直肌手术中，采用角膜缘切口的眼比采用穹窿切口的眼表现出更严重的眼前段缺血性改变。
