Hamberg-Nyström H, Fagerholm P, Sjöholm C, Tengroth B
St. Eriks Eye Hospital (Karolinska Institutet), Stockholm, Sweden.
J Refract Surg. 1995 May-Jun;11(3 Suppl):S265-7. doi: 10.3928/1081-597X-19950502-14.
The purpose of this study was to evaluate the refractive outcome and the stability of refraction after excimer laser photorefractive keratectomy (PRK). Forty-five eyes were treated in three different refractive groups: low myopes, 23 eyes, -1.50 diopters (D) to -6.00 D; intermediate myopes, 14 eyes, -6.10 D to -10.00 D; and high myopes, 8 eyes, -10.10 D to -18.00 D. At 9 months after surgery the low myopes had a mean refraction of -0.14 D (range -1.00 D to + 1.50 D) and were easy to refract. Intermediate myopes mean refraction was +0.14 D (range -1.50 D to +2.50 D). In the high myope group the mean refraction was -0.47 D (range -10.00 D to +2.50 D) and four eyes (50%) lost more than two lines of spectacle corrected visual acuity. Refraction the high myopes was more difficult compared to the lower myopes. PRK produced good results for myopes from -1.50 D to -10.00 D. Myopes greater than -10.00D are not stable at 9 months after PRK and are difficult to refract.
本研究的目的是评估准分子激光屈光性角膜切削术（PRK）后的屈光结果及屈光稳定性。45只眼被分为三个不同的屈光组进行治疗：低度近视组，23只眼，-1.50屈光度（D）至-6.00 D；中度近视组，14只眼，-6.10 D至-10.00 D；高度近视组，8只眼，-10.10 D至-18.00 D。术后9个月时，低度近视组的平均屈光度为-0.14 D（范围为-1.00 D至+1.50 D），且验光容易。中度近视组的平均屈光度为+0.14 D（范围为-1.50 D至+2.50 D）。在高度近视组中，平均屈光度为-0.47 D（范围为-10.00 D至+2.50 D），4只眼（50%）的矫正视力下降超过两行。与低度近视相比，高度近视的验光更困难。PRK对-1.50 D至-10.00 D的近视患者产生了良好的效果。近视度数大于-10.00 D的患者在PRK术后9个月时屈光不稳定，且验光困难。
