Uçakhan O O, Sokol J, Brodie S E, Asbell P A
Department of Ophthalmology, Mount Sinai School of Medicine, New York, NY 10029, USA.
CLAO J. 2000 Apr;26(2):102-5.
Assessment of the characteristics of the myopic patient population applying for refractive surgery in order to determine the potential market for myopic refractive surgery.
Records of consecutive patients who responded to an advertisement for refractive surgery to correct myopia were evaluated retrospectively with regards to patient demographics and the amount and distribution of the refractive error. Data were compared to that available from population-based statistics for distribution of myopia in the general population. For statistical analysis, one sample Student's t-test and two tailed Student's t-test were utilized.
Two hundred fifty seven patients (140 women and 117 men) responded to an advertisement for refractive surgery during the six month period between January and June 1998. Mean spherical equivalent (SEQ) of the patient population was -4.59+/-2.54 D (min;-0.25 D, max;-15.75 D) right eye (OD) and -4.62+/-2.82 D (min;-0.25 D, max;-15.25 D) left eye (OS). Among the patients who had myopia with an astigmatism of at most 1.00 D (n=165), the distribution of refractive error was statistically significantly different from that obtained from population-based statistics, such that, although most of the myopic population (40%) had an SEQ of -1.00 to -2.25 D, the majority of our patients (54.8%) who applied for myopic refractive surgery had an SEQ of -2.50 to -5.00 D. Another striking difference was that, although patients with an SEQ more than -6.00 D were a minority(2%) in the population study, in our study group, they comprised 16.7% of the patients seeking refractive correction. The difference between the SEQ of the right and left eyes ranged from 0.00 D to 13.0 D (mean, 0.89+/-1.5 D), 47.1 % having a difference of at most +/-0.5 D between the two eyes. The mean cylindrical error in the patient population was 0.69+/-0.93 D (min: 0, max: -4.5) OD and 0.69+/-0.96 D (min: 0, max: -4.5) OS. There were no statistically significant differences between the distribution of SEQ or cylindrical refractive error between males and females.
Although a population-based study reported that most of the myopic population (40%) had an SEQ of -1.00 to -2.25 D, the majority of our patients (54.8%) who applied for myopic refractive surgery had an SEQ of -2.50 to -5.00 D. On the other hand, while patients with an SEQ of -6.00 D and more constituted only about 2% of the general population, they accounted for 16.7% of our study population. Therefore, the refractive characteristics of the patient population applying for myopic refractive surgery may not necessarily parallel that of general population-based statistics. In order to establish a more effective refractive surgery practice, it is feasible to perform local studies and reevaluate the requirements of your practice accordingly.
评估申请屈光手术的近视患者群体的特征，以确定近视屈光手术的潜在市场。
对连续回应近视矫正屈光手术广告的患者记录进行回顾性评估，内容包括患者人口统计学信息以及屈光不正的度数和分布情况。将数据与普通人群中近视分布的基于人群的统计数据进行比较。对于统计分析，使用单样本学生t检验和双尾学生t检验。
在1998年1月至6月的六个月期间，有257名患者（140名女性和117名男性）回应了屈光手术广告。患者群体的平均球镜等效度数（SEQ）右眼（OD）为-4.59±2.54 D（最小值；-0.25 D，最大值；-15.75 D），左眼（OS）为-4.62±2.82 D（最小值；-0.25 D，最大值；-15.25 D）。在近视散光最多为1.00 D的患者（n = 165）中，屈光不正的分布与基于人群的统计数据有统计学显著差异，即虽然大多数近视人群（40%）的SEQ为-1.00至-2.25 D，但我们申请近视屈光手术的大多数患者（54.8%）的SEQ为-2.50至-5.00 D。另一个显著差异是，虽然SEQ超过-6.00 D的患者在人群研究中占少数（2%），但在我们的研究组中，他们占寻求屈光矫正患者的16.7%。右眼和左眼SEQ的差异范围为0.00 D至13.0 D（平均值，0.89±1.5 D），47.1%的两眼差异最多为±0.5 D。患者群体的平均柱镜度数OD为0.69±0.93 D（最小值：0，最大值：-4.5），OS为0.69±0.96 D（最小值：0，最大值：-4.5）。男性和女性之间SEQ或柱镜屈光不正的分布没有统计学显著差异。
虽然一项基于人群的研究报告称大多数近视人群（40%）的SEQ为-1.00至-2.25 D，但我们申请近视屈光手术的大多数患者（54.8%）的SEQ为-2.50至-5.00 D。另一方面，虽然SEQ为-6.00 D及以上的患者仅占普通人群的约2%，但他们占我们研究人群的16.7%。因此，申请近视屈光手术的患者群体的屈光特征不一定与基于普通人群的统计数据一致。为了建立更有效的屈光手术实践，进行局部研究并相应地重新评估你的实践需求是可行的。
