Tsao Wei-Shan, Lee Yuan-Chieh
Department of Ophthalmology, Buddhist Tzu Chi General Hospital, Hualien, Taiwan.
Department of Ophthalmology and Visual Science, Tzu Chi University, Hualien, Taiwan.
Taiwan J Ophthalmol. 2016 Apr-Jun;6(2):89-92. doi: 10.1016/j.tjo.2015.07.007. Epub 2015 Sep 26.
A 49-year-old woman was referred to our clinic for penetrating keratoplasty. A central corneal scar involving the visual axis with high irregular astigmatism up to 15.8 D was noted. Because the scar was located mostly in the central cornea, ipsilateral rotational autokeratoplasty was suggested and performed. An 8.5-mm punch was used to trephine the cornea eccentrically and superiorly intentionally. The trephined corneal button was then rotated 150° to relocate the scar to the temporal upper part of the cornea. The graft was soon clear with a normal curvature centrally. The astigmatism was -0.5 D, the visual acuity was 20/40, and the endothelial cell loss was 2.66% 2 years after the operation. A rotational autograft carries no risk of immunological complications such as rejection associated with allografts and has lower endothelial cell loss rate. It can be an effective alternative to standard penetrating keratoplasty for some patients with central corneal scars.
一名49岁女性因穿透性角膜移植术被转诊至我们的诊所。检查发现中央角膜瘢痕累及视轴,伴有高达15.8 D的高度不规则散光。由于瘢痕主要位于中央角膜,故建议并实施了同侧旋转式自体角膜移植术。使用8.5毫米的环钻偏心且有意地在角膜上方进行环切。然后将切下的角膜片旋转150°,将瘢痕移至角膜颞侧上部。移植片很快变得透明,中央曲率正常。术后2年,散光为-0.5 D,视力为20/40,内皮细胞损失率为2.66%。旋转式自体移植不存在与同种异体移植相关的免疫并发症风险,如排斥反应,且内皮细胞损失率较低。对于一些中央角膜瘢痕患者,它可以成为标准穿透性角膜移植术的有效替代方法。