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ORIGINAL ARTICLE
Year : 2005  |  Volume : 53  |  Issue : 2  |  Page : 105-108

Amplitude of Accommodation and its Relation to Refractive Errors


1 Department of Ophthalmology, Christian Medical College, Vellore, India
2 L V Prasad Eye Institute, Hyderabad, India
3 Department of Community Health, Christian Medical College, Vellore, India

Correspondence Address:
Thomas Kuriakose
Dr. Thomas Kuriakose, Department of Ophthalmology, Christian Medical College, Arni Road, Vellore - 632 001, India
India
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Source of Support: None, Conflict of Interest: None


DOI: 10.4103/0301-4738.16173

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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


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