Author
William van Herick
Bio: William van Herick is an academic researcher from University of California, San Francisco. The author has contributed to research in topics: Pressure angle & Retinoblastoma. The author has an hindex of 3, co-authored 3 publications receiving 396 citations.
Topics: Pressure angle, Retinoblastoma, Optic nerve, Gonioscopy, Atrophy
Papers
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403 citations
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TL;DR: In this paper, the prevalence of open-angle glaucoma and ocular hypertension in an Australian community whose residents are 49 years of age or older was determined by a door-to-door census and closely matched findings from the national census.
923 citations
TL;DR: The basic knowledge to calculate sensitivity, specificity, positive predictive value and negative predictive value is discussed and how to use these measures in day-to-day clinical practice is provided.
Abstract: In this article, we have discussed the basic knowledge to calculate sensitivity, specificity, positive predictive value and negative predictive value. We have discussed the advantage and limitations of these measures and have provided how we should use these measures in our day-to-day clinical practice. We also have illustrated how to calculate sensitivity and specificity while combining two tests and how to use these results for our patients in day-to-day practice.
899 citations
TL;DR: In this paper, the prevalence of primary open-angle glaucoma (POAG) and its association with intraocular pressure (IOP) in Tajimi City in central Japan was assessed.
874 citations
TL;DR: The Rotterdam Study as discussed by the authors assessed the prevalence of primary open-angle glaucoma (POAG) in a defined population in the Netherlands, and the overall prevalence of POAG was 1.10% (95% confidence interval [CI]: 1.09,1.11).
520 citations
TL;DR: Data from this study allow further understanding of the etiology and impact of eye diseases in this ethnic group and provide population-based data on the prevalence of and risk factors for age-related eye disease in people of Malay ethnicity in Singapore.
Abstract: Purpose: Although there are approximately 200 million people of Malay ethnicity living in Asia, the burden and risk factors of blinding eye diseases in this ethnic group are unknown. This study summarizes the rationale and study design of a population-based study of eye diseases among adult Malays in Singapore. Methods: A population-based cross-sectional study of Malays was designed in Singapore. The sampling frame consisted of all Malays aged 40–79 living in designated study areas in southwestern Singapore. From a list of 16,069 names provided by the Ministry of Home Affairs, age-stratified random sampling was used to select 5,600 names (1,400 people from each decade of 40–49, 50–59, 60–69, and 70–79 years). The target sample size for this study was 3,150 persons. Selected individuals were invited to a centralized clinic by letters, telephone calls, and home visits. Participants underwent standardized interview and assessment of blood pressure, anthropometry, presenting and best-corrected visual acuity, ...
442 citations