The cumulative frequency distribution curve of the eye pressure
作者:
Martin Davanger,
Amund Ringvold,
期刊:
Acta Ophthalmologica
(WILEY Available online 1992)
卷期:
Volume 70,
issue 4
页码: 489-494
ISSN:1755-375X
年代: 1992
DOI:10.1111/j.1755-3768.1992.tb02119.x
出版商: Blackwell Publishing Ltd
关键词: glaucoma;pseudo‐exfoliation;eye pressure;population survey
数据来源: WILEY
摘要:
AbstractKnowledge of the probability of having glaucoma at different levels of eye pressure is a prerequisite for estimating at which eye pressure levels preventive pressure‐lowering treatment ought to be applied. The glaucoma tolerance may not be the same in all population groups. Calculation of tolerance distribution curves may be performed if the frequency distribution curves of pressure in eyes with and without glaucoma are known. Regression analysis has been performed to compute curves approaching the cumulative frequency distribution of the eye pressure in different subgroups. Results of a population study including subjects ≥ 65 years of age have been used. An equation describing an asymmetric sigmoid curve has been applied in the curve fitting procedure. The derivative of this equation was used to describe the noncumulative frequency distribution curves. The analysis has been performed in subgroups consisting of normal eyes, glaucomatous eyes, eyes with and without pseudo‐exfoli
点击下载:
PDF
(300KB)
返 回