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Abstract #19242 Published in IGR 9-2
Influence of intraocular pressure on retinal vascular caliber measurements in children
de Haseth K; Cheung N; Saw SM; Islam FM; Mitchell P; Wong TYAmerican Journal of Ophthalmology 2007; 143: 1040-1042
See also comment(s) by Andreas Boehm •
PURPOSE: To determine whether intraocular pressure (IOP) influences retinal vascular caliber in young children, in order to provide a better understanding of its physiological determinants. DESIGN: Cross-sectional study. METHODS: Three hundred and eighty-six Chinese children seven to nine years of age participated in the Singapore Cohort Study of the Risk factors for Myopia (SCORM). IOP was measured by noncontact tonometry. Retinal vascular calibers were measured from retinal photographs using a computer-based program following standardized protocols. RESULTS: After adjusting for age, gender, body mass index, corneal thickness, spherical equivalent refraction, axial length, and birth weight, mean retinal arteriolar and venular caliber were similar across the distribution of IOP (arteriolar caliber of 155.2 μm, 155.6 μm, 153.8 μm, 154.2 μm, P value for trends, 0.45; and venular caliber of 225.7 μm, 220.6 μm, 224.5 μm, 222.7 μm, P value for trends, 0.53; comparing increasing quartiles of IOP). CONCLUSIONS: Our study provides no evidence that IOP influences retinal vascular caliber in healthy young children.
Dr. de Haseth, Centre for Eye Research Australia, University of Melbourne, Melbourne, Victoria, Australia
Classification:
6.8.2 Posterior segment (Part of: 6 Clinical examination methods > 6.8 Photography)
6.1 Intraocular pressure measurement; factors affecting IOP (Part of: 6 Clinical examination methods)
8.1 Myopia (Part of: 8 Refractive errors in relation to glaucoma)