Static Perimetry Test May Benefit Children With Glaucoma

Test quality similar for the Humphrey static, Octopus combined approaches for glaucoma in kids over 10
Test quality similar for the Humphrey static, Octopus combined approaches for glaucoma in kids over 10

HealthDay News — A simple static perimetry approach may yield higher-quality results than a combined perimetry approach in children younger than 10 years with glaucoma, according to a study published online December 28 in JAMA Ophthalmology.

Dipesh E. Patel, PhD, from the University College London Great Ormond Street Institute of Child Health, and colleagues conducted a cross-sectional study recruiting children at two specialist pediatric ophthalmology centers. Data were included for 65 children aged 5 to 15 years with glaucoma, with 108 affected eyes. 

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The researchers found that there was improvement in the test quality for both Humphrey static (Swedish Interactive Thresholding Algorithm 24-2 FAST) and Octopus combined static tendency-oriented perimetry/kinetic perimetry (isopter V4e, III4e, or I4e) strategies with increasing age; these strategies were equivalent in children older than 10 years, while in younger children, better-quality tests were achieved with Humphrey perimetry. There was disagreement when Octopus and Humphrey static MD values were worse than or equal to −6 dB, while values were comparable when greater than this threshold. Substantial agreement was seen for visual field classification scores for static perimetry tests; with Octopus perimetry, 31% of cases were graded with a more severe defect.

"A simple static perimetry approach potentially yields high-quality results in children younger than 10 years," the authors write. "For children older than 10 years, without penalizing quality, the addition of kinetic perimetry enabled measurement of far-peripheral sensitivity, which is particularly useful in children with severe visual field restriction."

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