A comparison of automated and manifest refraction: The effect of age. | [Pakistan Journal of Ophthalmology • 2006]

Author(s):

1. Khayyam Durrani: Department of Ophthalmology and Comminity Health Science, The Aga Khan University, Karachi, Pakistan

2. Amanullah Khan: Department of Ophthalmology and Comminity Health Science, The Aga Khan University, Karachi, Pakistan

3. Sohail Ahmed: Department of Ophthalmology and Comminity Health Science, The Aga Khan University, Karachi, Pakistan

4. Jehangir Durrani: Department of Ophthalmology, Shaikh Zayed Federal Postgraduate Medical Institute, Lahore, Pakistan

Abstract:

Autorefraction without subjective refinement is being increasingly employed by opticians in Pakistan for prescribing glasses. The purpose of this study is to compare the refractive correction obtained by autorefraction alone and manifest refraction at a tertiary care hospital in Pakistan and to determine the relationship of this difference with age. Two hundred and sixty nine patients visiting the ophthalmology clinic of a large tertiary-care hospital in Karachi, Pakistan were studied. Autorefraction alone using a Canon R-10 Autorefractor and manifest refraction were performed at the same visit. A clinically significant difference between autorefraction and manifest refraction was defined as a difference of >0.50 D in sphere, cylinder, spherical equivalent or weighted axis, or > 10° in axis. In 266 right eyes, the median difference between autorefraction and manifest refraction in spherical corrections was +0.01 D (p=0.85), -0.33 D in cylindrical corrections (p

Page(s): 121-124

DOI: DOI not available

Published: Journal: Pakistan Journal of Ophthalmology , Volume: 22, Issue: 3, Year: 2006

Keywords:

Keywords are not available for this article.

References:

References are not available for this document.

Citations

Citations are not available for this document.

Citations

Downloads

Views