Javal's rule
id:
javal-s-rule-241-392153
title:
Javal's rule
text:
Javal's rule is a mathematical formula used to estimate astigmatism based on keratometry readings. The estimate is useful for high cylinder measures, generally over -2.00 diopters.
The estimate is found by multiplying the difference in power between the two meridians by 1.25 and factoring in the average lenticular astigmatism, which is -0.50 x 090.
brand slug:
wiki
category slug:
encyclopedia
description:
original url:
https://en.wikipedia.org/wiki/Javal%27s_rule
date created:
date modified:
2020-11-07T16:10:42Z
main entity:
{"identifier":"Q16902886","url":"https://www.wikidata.org/entity/Q16902886"}
image:
fields total:
13
integrity:
13