Adeoti C O, Egbewale B E
Department of Ophthalmology, LAUTECH Teaching Hospital Osogbo, College of Health Sciences, Osogbo, Nigeria.
Niger Postgrad Med J. 2008 Jun;15(2):116-9.
The study was conducted to determine the magnitude and pattern of refractive errors in order to provide facilities for its management.
A prospective study of 3601 eyes of 1824 consective patients was conducted. Information obtained included age, sex, occupation, visual acuity, type and degree of refractive error. The data was analysed using Statistical Package for Social Sciences 11.0 version) Computer Software.
Refractive error was found in 1824(53.71%) patients. There were 832(45.61%) males and 992(54.39%) females with a mean age of 35.55. Myopia was the commonest (1412(39.21% eyes). Others include hypermetropia (840(23.33% eyes), astigmatism (785(21.80%) and 820 patients (1640 eyes) had presbyopia. Anisometropia was present in 791(44.51%) of 1777 patients that had bilateral refractive errors. Two thousand two hundred and fifty two eyes has spherical errors. Out of 2252 eyes with spherical errors, 1308 eyes (58.08%) had errors -0.50 to +0.50 dioptres, 567 eyes (25.18%) had errors less than -0.50 dioptres of whom 63 eyes (2.80%) had errors less than -5.00 dioptres while 377 eyes (16.74%) had errors greater than +0.50 dioptres of whom 81 eyes (3.60%) had errors greater than +2.00 dioptres. The highest error was 20.00 dioptres for myopia and 18.00 dioptres for hypermetropia.
Refractive error is common in this environment. Adequate provision should be made for its correction bearing in mind the common types and degrees.
开展该研究以确定屈光不正的程度和模式，以便为其管理提供便利。
对1824例连续患者的3601只眼进行前瞻性研究。获取的信息包括年龄、性别、职业、视力、屈光不正的类型和程度。使用社会科学统计软件包（11.0版）计算机软件对数据进行分析。
在1824例（53.71%）患者中发现屈光不正。男性832例（45.61%），女性992例（54.39%），平均年龄35.55岁。近视最为常见（1412只眼，占39.21%）。其他包括远视（840只眼，占23.33%）、散光（785只眼，占21.80%），820例患者（1640只眼）有老花眼。在1777例有双侧屈光不正的患者中，791例（44.51%）存在屈光参差。2252只眼有球镜度数误差。在2252只存在球镜度数误差的眼中，1308只眼（58.08%）的误差在-0.50至+0.50屈光度之间，567只眼（25.18%）的误差小于-0.50屈光度，其中63只眼（2.80%）的误差小于-5.00屈光度，而377只眼（16.74%）的误差大于+0.50屈光度，其中81只眼（3.60%）的误差大于+2.00屈光度。近视的最高误差为20.00屈光度，远视的最高误差为18.00屈光度。
在这种环境下屈光不正很常见。应根据常见类型和程度，为其矫正提供充分条件。
