Spadea Leopoldo, Sabetti Lelio, D'Alessandri Laura, Balestrazzi Emilio
University of L'Aquila, L'Aquila, Italy.
J Refract Surg. 2006 Feb;22(2):131-6. doi: 10.3928/1081-597X-20060201-09.
To evaluate the efficacy and safety of photorefractive keratectomy (PRK) and LASIK in the correction of hyperopia.
A retrospective study was conducted on 100 eyes of 56 patients with a mean hyperopia of +2.85 +/- 1.1 diopters (D) undergoing PRK and 100 eyes of 50 patients with a mean hyperopia of +4.49 +/- 1.2 D undergoing LASIK. A Zeiss Meditec MEL 70 G scan laser was used.
After 24-month follow-up in the PRK group (100 eyes), the mean manifest refractive spherical equivalent (MRSE) was +0.34 +/- 0.92 D (36% +/- 0.5 D). Mean uncorrected visual acuity (UCVA) was 0.87 +/- 0.1; 8 (8%) eyes gained 1 line, 80 (80%) eyes had no loss or gain of lines, 10 (10%) eyes lost 1 line, and 2 (2%) eyes lost 2 lines. In the LASIK group (100 eyes), at 24-month follow-up, the mean MRSE was +0.29 +/- 0.66 D (70% +/- 0.5 D). Mean UCVA was 0.89 +/- 0.1; 6 (6%) eyes gained 2 lines, 10 (10%) eyes gained 1 line, 78 (78%) eyes had no loss or gain of lines, and 6 (6%) eyes lost 1 line.
Photorefractive keratectomy and LASIK were both effective and safe in the correction of hyperopia. However, PRK manifested an initial temporary myopic overshoot followed by a hyperopic regression over 24-month follow-up (P < .01) whereas LASIK was associated with a faster refractive stability.
评估准分子激光原位角膜磨镶术（PRK）和准分子激光上皮下角膜磨镶术（LASIK）矫正远视的有效性和安全性。
对56例平均远视度数为+2.85±1.1屈光度（D）的患者的100只眼行PRK进行回顾性研究，以及对50例平均远视度数为+4.49±1.2 D的患者的100只眼行LASIK进行回顾性研究。使用蔡司Meditec MEL 70 G扫描激光。
PRK组（100只眼）随访24个月后，平均显形屈光球镜等效度（MRSE）为+0.34±0.92 D（36%±0.5 D）。平均裸眼视力（UCVA）为0.87±0.1；8只眼（8%）视力提高1行，80只眼（80%）视力无变化，10只眼（10%）视力下降1行，2只眼（2%）视力下降2行。LASIK组（100只眼）随访24个月时，平均MRSE为+0.29±0.66 D（70%±0.5 D）。平均UCVA为0.89±0.1；6只眼（6%）视力提高2行，10只眼（10%）视力提高1行，78只眼（78%）视力无变化，6只眼（6%）视力下降1行。
PRK和LASIK矫正远视均有效且安全。然而，PRK在24个月的随访中表现出最初的暂时性近视过矫，随后出现远视回退（P<0.01），而LASIK的屈光稳定性更快。
