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普遍的看法认为冷冻对眼外肌不会产生不良后果,但曾报导通过结膜进行冷冻治疗后可以产生暂时性复视,作者等都曾注意到作过冷冻治疗的视网膜脱离病人,再次手术牵引直肌时可引起断裂。为了解释这些现象作者研究了冷冻对家兔眼外肌的张力强度和组织学变化。材料和方法:12只白兔,重2-3kg,用硫苯土钠静脉麻醉,选用上、下直肌作实验,因为他们的大小和强度相似,而且通过结膜可以看到。总共48条可以利用的肌肉中,44条用于研究。9
It is generally believed that freezing has no adverse effect on extraocular muscles. However, it has been reported that temporary diplopia can be produced by cryotherapy of conjunctiva. The authors all noticed that patients with retinal detachment treated by cryotherapy were re-operated directly Muscle can cause rupture. To explain these phenomena the authors studied the tensile strength and histological changes of rabbit extraocular muscles following freezing. MATERIALS AND METHODS: Twelve rabbits were weighed 2-3 kg and anesthetized with sodium thiophene sulphide. The upper and lower rectus muscles were selected for experiment because they are similar in size and intensity and can be seen through the conjunctiva. Of a total of 48 available muscles, 44 were used for research. 9