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在临床上,角膜上皮有时极易受到伤害。譬如手术中用某些表面麻醉剂如可卡因等滴眼后,撑开眼裂稍久,即因上皮表层损害而出现眼表发干现象。如不及时滴水,常引起局部上皮脱落;相反,在许多严重情况下,角膜上皮又似有极强的抵抗力,能够长期保持正常。如眼球它部的严重炎症,甚至引起了眼球萎缩,角膜表面仍能形成完整泪膜,泪膜破裂时间正常。前一情况已证明为某些表面麻醉剂损害表层角膜上皮微绒毛的结果后一情况则是否角膜上皮在某些严重局面下仍能保持正常,有待证明。我们作了一些初步的电镜观察,现简略报告三例并讨论于下。
In clinical practice, corneal epithelium is sometimes extremely vulnerable. For example, surgery with some surface anesthetics such as cocaine and other eye drops, open the eye crack slightly longer, that is due to damage to the epithelial surface ocular surface dry phenomenon. If not drip, often lead to local epithelial shedding; the contrary, in many serious cases, the corneal epithelium seems to have strong resistance, to maintain long-term normal. Such as the Department of eye it severe inflammation, and even caused atrophy of the eye, the corneal surface can still form a complete tear film, tear film rupture time is normal. The former situation has proved that some surface anesthetics damage the surface of the corneal epithelial microvilli after the results of the situation is whether the corneal epithelium in some serious cases can remain normal, to be proved. We made some preliminary observations by electron microscopy. Three cases are briefly reported and discussed below.