Buzard K A
Department of Surgery, University of Nevada School of Medicine, Las Vegas.
Refract Corneal Surg. 1991 Sep-Oct;7(5):348-55.
Since the introduction of radial keratotomy, accurate incision depth has been difficult to achieve with any corneal knife. To assure repeatable depth of incisions and to adjust the refractive effect of these incisions after the surgery, I have developed a series of techniques that are described in this article and that I refer to as "tickles" in discussion with the patients. Seventeen eyes, from a consecutive series of 102 operations (reoperation rate of 17%), underwent complete opening and/or deepening of undercorrected eight-incision radial keratotomy. This was performed in the immediate postoperative period (3.0 +/- 4.2 months), at the slit-lamp microscope, without peripheral deepening or extension of the optical zone. After the initial radial keratotomy, the average spherical equivalent refraction was -2.04 +/- 0.68 D; after opening and/or deepening the incisions, the average spherical equivalent refraction was -0.53 +/- 0.24 D. The average effect of this procedure was a reduction in myopia of 1.51 D. All 17 eyes had a final refraction between -0.25 and -1.00.
自从放射状角膜切开术问世以来，使用任何角膜刀都难以精确达到所需的切口深度。为确保切口深度的可重复性，并在手术后调整这些切口的屈光效果，我研发了一系列技术，本文将对其进行描述，在与患者讨论时我将其称为“微调”。在连续的102例手术（再手术率为17%）中，有17只眼睛接受了欠矫的八切口放射状角膜切开术的完全切开和/或加深。这是在术后即刻（3.0±4.2个月），在裂隙灯显微镜下进行的，未进行周边加深或光学区扩大。初次放射状角膜切开术后，平均等效球镜度为-2.04±0.68D；在切开和/或加深切口后，平均等效球镜度为-0.53±0.24D。该手术的平均效果是近视降低了1.51D。所有17只眼睛的最终屈光度在-0.25至-1.00之间。
