Keratometer
id:
keratometer-184-17095612
title:
Keratometer
text:
A keratometer, also known as an ophthalmometer, is a diagnostic instrument for measuring the curvature of the anterior surface of the cornea, particularly for assessing the extent and axis of astigmatism. It was invented by the German physiologist Hermann von Helmholtz in 1851, although an earlier model was developed in 1796 by Jesse Ramsden and Everard Home. A keratometer uses the relationship between object size (O), image size (I), the distance between the reflective surface and the object (d
brand slug:
wiki
category slug:
encyclopedia
description:
original url:
https://en.wikipedia.org/wiki/Keratometer
date created:
2006-02-20T00:33:09Z
date modified:
2024-09-07T22:13:54Z
main entity:
{"identifier":"Q1758711","url":"https://www.wikidata.org/entity/Q1758711"}
image:
{"content_url":"https://upload.wikimedia.org/wikipedia/commons/5/56/Eye_doctor_examining_Nigerian_patient_with_keratometer.jpg","width":1164,"height":912}
fields total:
13
integrity:
15