Axial elongation following prolonged near work in myopes and emmetropes
Data(s) |
2011
|
---|---|
Resumo |
Background/aims: To investigate the influence of a period of sustained near work upon axial length in groups of emmetropes and myopes. Methods: Forty young adult subjects (20 myopes and 20 emmetropes) were recruited for the study. Myopes were further classified as either early onset (EOM), late onset (LOM), stable (SM) or progressing (PM) subgroups. Axial length was measured with the IOLMaster instrument before, immediately after and then again 10 minutes after a continuous 30 minute near task of 5 D accommodation demand. Measures of distance objective refraction were also collected. Results: Significant changes in axial length were observed immediately following the near task. EOM axial length elongated on average by 0.027 ± 0.021 mm, LOM by 0.014 ± 0.020 mm, EMM by 0.010 ± 0.015 mm, PM by 0.031 ± 0.022 mm, and SM by 0.014 ± 0.018 mm. At the conclusion of the 10 minute regression period, axial length measures were not significantly different from baseline values. Conclusion: Axial elongation was observed following a prolonged near task. Both EOM and PM groups showed increases in axial length that were significantly greater than emmetropes |
Formato |
application/pdf |
Identificador | |
Publicador |
BMJ Publishing Group |
Relação |
http://eprints.qut.edu.au/38231/1/c38231.pdf DOI:10.1136/bjo.2010.180323 Woodman, Emily, Read, Scott A., Collins, Michael J., Hegarty, Katherine, Priddle, Scott, Smith, Josephine, & Perro, Judd (2011) Axial elongation following prolonged near work in myopes and emmetropes. British Journal of Ophthalmology, 95, pp. 652-656. |
Direitos |
Copyright 2010 the authors. Produced by BMJ Publishing Group Ltd under licence |
Fonte |
Faculty of Health; Institute of Health and Biomedical Innovation; School of Optometry & Vision Science |
Palavras-Chave | #111300 OPTOMETRY AND OPHTHALMOLOGY #Myopia #Accommodation #Near Work #Axial Elongation |
Tipo |
Journal Article |