Durrie D S, Schumer D J, Cavanaugh T B
Hunkeler Eye Clinic, Kansas City, Mo. 64111.
J Refract Corneal Surg. 1994 Mar-Apr;10(2 Suppl):S277-80.
Holmium:YAG laser thermokeratoplasty (LTK), a procedure using a solid-state infrared laser to treat hyperopia, was performed on 10 patients in phase I and 16 patients in phase II--in a total of 29 eyes at the Hunkeler Eye Clinic. Phase II was redesigned after phase I results showed undercorrection and regression. The follow-up period ranged from 1 to 24 months (mean 10.9 months). A total of 79% of phase II patients were within +/- 1.00 D of intended correction at the 6-month visit. Looking at both phases together, no patients had J2 or better near vision preoperatively, but 75% had J2 or better at the 6-month visit. A total of 43% of eyes in phase II lost 1 line and 7% lost two lines of best spectacle corrected visual acuity due to induction of irregular astigmatism. The surgical challenges are to insure appropriate centration of the procedure about the optical axis. Concerns about regression and stability will be defined as these patients are followed through their 2-year visits.
钇铝石榴石激光热角膜成形术（LTK）是一种使用固态红外激光治疗远视的手术，在洪克勒眼科诊所，I期对10例患者、II期对16例患者共29只眼进行了该手术。I期结果显示矫正不足和回退之后，II期进行了重新设计。随访期为1至24个月（平均10.9个月）。在6个月的随访中，II期患者共有79%的屈光矫正度数在预期矫正度数的±1.00 D范围内。综合两个阶段来看，术前没有患者的近视力达到J2或更好，但在6个月的随访时有75%的患者达到了J2或更好。由于诱发了不规则散光，II期共有43%的患眼最佳矫正视力下降了1行，7%的患眼下降了2行。手术的挑战在于确保手术围绕视轴进行适当的定中心。随着这些患者接受为期2年的随访，对回退和稳定性的关注将会明确。
