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    The association between retinal vein ophthalmodynamometric force change and optic disc excavation

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    Abstract
    Aim: Retinal vein ophthalmodynamometric force (ODF) is predictive of future optic disc excavation in glaucoma, but it is not known if variation in ODF affects prognosis. We aimed to assess whether a change in ODF provides additional prognostic information. Methods: 135 eyes of 75 patients with glaucoma or being glaucoma suspects had intraocular pressure (IOP), visual fields, stereo optic disc photography and ODF measured on an initial visit and a subsequent visit at mean 82 (SD 7.3) months later. Corneal thickness and blood pressure were recorded on the latter visit. When venous pulsation was spontaneous, the ODF was recorded as 0 g. Change in ODF was calculated. Flicker stereochronoscopy was used to determine the occurrence of optic disc excavation, which was modelled against the measured variables using multiple mixed effects logistic regression. Results: Change in ODF (p=0.046) was associated with increased excavation. Average IOP (p=0.66) and other variables were not associated. Odds ratio for increased optic disc excavation of 1.045 per gram ODF change (95% CI 1.001 to 1.090) was calculated. Conclusion: Change in retinal vein ODF may provide additional information to assist with glaucoma prognostication and implies a significant relationship between venous change and glaucoma patho-physiology.
    Citation
    Morgan, W. H., Hazelton, M. L., Balaratnasingamm, C., Chan, H., House, P. H., Barry, C. J., et al. (2009). The association between retinal vein ophthalmodynamometric force change and optic disc excavation. British Journal of Ophthalmology, 93(5), 594-596. doi: 10.1136/bjo.2008.149963
    Date
    2008-12-19
    Author
    Morgan, W. H.
    Hazelton, M. L.ORCID
    Balaratnasingamm, C.
    Chan, H.
    House, P. H.
    Barry, C. J.
    Cringle, S. J.
    Yu, D-Y.
    Publisher
    BMJ Publishing Group
    URI
    http://hdl.handle.net/10179/9720
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    Copyright © Massey University
    Contact Us | Send Feedback | Copyright Take Down Request | Massey University Privacy Statement
    DSpace software copyright © Duraspace
    v5.7-27.11.15