May 2005
Volume 46, Issue 13
Free
ARVO Annual Meeting Abstract  |   May 2005
Visual Acuity After Acute Primary Angle Closure– Considerations for Primary Lens Extraction
Author Affiliations & Notes
  • G.S. Tan
    Singapore National Eye Ctr, Singapore, Singapore
  • S.–T. Hoh
    Singapore National Eye Ctr, Singapore, Singapore
  • R. Husain
    Singapore National Eye Ctr, Singapore, Singapore
    Institute of Ophthalmology, London, United Kingdom
  • F.T. S. Oen
    Singapore National Eye Ctr, Singapore, Singapore
  • G. Gazzard
    Singapore National Eye Ctr, Singapore, Singapore
    Institute of Ophthalmology, London, United Kingdom
  • S.K. L. Seah
    Singapore National Eye Ctr, Singapore, Singapore
  • T. Aung
    Singapore National Eye Ctr, Singapore, Singapore
    Ophthalmology, National University of Singapore, Singapore, Singapore
  • Footnotes
    Commercial Relationships  G.S. Tan, None; S. Hoh, None; R. Husain, None; F.T.S. Oen, None; G. Gazzard, None; S.K.L. Seah, None; T. Aung, None.
  • Footnotes
    Support  Grant from Singapore Eye Research Institute
Investigative Ophthalmology & Visual Science May 2005, Vol.46, 138. doi:
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      G.S. Tan, S.–T. Hoh, R. Husain, F.T. S. Oen, G. Gazzard, S.K. L. Seah, T. Aung; Visual Acuity After Acute Primary Angle Closure– Considerations for Primary Lens Extraction . Invest. Ophthalmol. Vis. Sci. 2005;46(13):138.

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      © ARVO (1962-2015); The Authors (2016-present)

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Abstract

Abstract: : Purpose: Although primary lens extraction has been advocated for cases of acute primary angle closure (APAC), it is not known if this is warranted in all cases. The aim of this study was to investigate the visual acuity (VA) of APAC eyes shortly after resolution of the acute episode. Methods: This was an prospective observational case series. As part of a randomized controlled trial comparing phacoemulsification and laser iridotomy, 135 consecutive APAC subjects over a 2 year period underwent subjective refraction and measurement of Snellen VA once the acute episode had resolved with reduction of IOP and improved corneal clarity. Results: Subjects were predominantly Chinese (95.6%) and female (79.3%), with a mean age of 63.6 ± 9.6 years. When assessed 1.7 + 2.7 days after presentation, the majority of APAC cases (50.4%) had good VA (6/12 or better), with more than a quarter of cases having VA of 6/7.5 or better. Poor VA was associated with duration of symptoms (p=0.04, OR=4.1, CI95% 1.1–15.7) and time taken to resolution of APAC (p=0.04, OR=2.2, CI95% 1.02–4.6), but not with sex (p=0.31), age (p=0.26) or presenting IOP (p=0.73). Conclusions: Within days after APAC, more than half of APAC affected eyes had good visual acuity (6/12 or better). These results suggest that the role of lens extraction in the management of APAC, especially in eyes with good visual acuity, warrant further debate.

Keywords: clinical (human) or epidemiologic studies: risk factor assessment • intraocular pressure • cataract 
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