调节幅度及其与屈光不正的关系。

Amplitude of accommodation and its relation to refractive errors.

作者信息

Abraham Lekha Mary, Kuriakose Thomas, Sivanandam Viswanathan, Venkatesan Nithya, Thomas Ravi, Muliyil Jayaprakash

机构信息

Department of Ophthalmology, Christian Medical College, Vellore, India.

出版信息

Indian J Ophthalmol. 2005 Jun;53(2):105-8. doi: 10.4103/0301-4738.16173.

DOI:10.4103/0301-4738.16173

PMID:15976465

Abstract

AIMS

To evaluate the relationship between amplitude of accommodation and refractive errors in the peri-presbyopic age group.

MATERIALS AND METHODS

Three hundred and sixteen right eyes of 316 consecutive patients in the age group 35-50 years who attended our outpatient clinic were studied. Emmetropes, hypermetropes and myopes with best-corrected visual acuity of 6/6 J1 in both eyes were included. The amplitude of accommodation (AA) was calculated by measuring the near point of accommodation (NPA). In patients with more than +/- 2 diopter sphere correction for distance, the NPA was also measured using appropriate soft contact lenses.

RESULTS

There was a statistically significant difference in AA between myopes and hypermetropes (P < 0.005) and between myopes and emmetropes (P < 0.005) in the 35-39 year age group. In the 40-44 year age group, there was a significant difference in AA between emmetropes and hypermetropes (P < 0.0001), emmetropes and myopes (P < 0.01) and hypermetropes and myopes (P < 0.0001). In patients above 45 years of age there was no significant difference (P > 0.5).

CONCLUSION

Our study showed higher amplitude of accommodation among myopes between 35 and 44 years compared to emmetropes and hypermetropes.

摘要

目的

评估准老视年龄组的调节幅度与屈光不正之间的关系。

材料与方法

对连续316例年龄在35 - 50岁、前来我院门诊就诊患者的316只右眼进行研究。纳入双眼最佳矫正视力为6/6 J1的正视眼、远视眼和近视眼患者。通过测量调节近点（NPA）来计算调节幅度（AA）。对于球镜矫正度数超过±2屈光度的患者，也使用合适的软性接触镜测量NPA。

结果

在35 - 39岁年龄组中，近视眼与远视眼之间（P < 0.005）以及近视眼与正视眼之间（P < 0.005）的AA存在统计学显著差异。在40 - 44岁年龄组中，正视眼与远视眼之间（P < 0.0001）、正视眼与近视眼之间（P < 0.01）以及远视眼与近视眼之间（P < 0.0001）的AA存在显著差异。在45岁以上患者中，差异无统计学意义（P > 0.5）。