Change in optic disc topography associated with diurnal variation in intraocular pressure.
作者信息
Lee B L, Zangwill L, Weinreb R N
机构信息
Glaucoma Center and Research Laboratory, University of California at San Diego, La Jolla 92093-0946, USA.
出版信息
J Glaucoma. 1999 Jun;8(3):221-3. doi: 10.1097/00061198-199906000-00014.
PURPOSE
A case demonstrating significant changes in optic disc topography from variation in intraocular pressure (IOP) is demonstrated.
METHODS
Within a single 24-hour period, confocal scanning laser ophthalmoscopic images were obtained in the left eye of a patient during an IOP peak (60 mmHg) and during an IOP trough (18 mmHg).
RESULTS
During an IOP trough, paired t tests showed significant reduction in cup area, cup volume, mean cup depth, and maximum cup depth, and a significant increase in rim area and cup-to-disc (CD) ratio.
CONCLUSION
Under certain conditions, optic disc topography may be affected by diurnal variations in IOP.
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