Pitfalls in the Determination of Intraocular Lens Power Without Ultrasound

Autor:	Richard D Binkhorst
Rok vydání:	1976
Předmět:	genetic structures business.industry Computer science medicine.medical_treatment Ultrasound Intraocular lens Refraction eye diseases Cataract extraction Intraocular lens power medicine Optometry Vision test Ultrasonography business Dioptre
Zdroj:	Ophthalmic Surgery, Lasers and Imaging Retina. 7:69-72
ISSN:	2325-8179 2325-8160
DOI:	10.3928/1542-8877-19761001-12
Popis:	SUMMARY The rule is simple: An 18 diopter intraocular lens tends to restore the basic refraction. For each diopter of basic refraction to be corrected add or subtract 1.25 diopters. To determine the basic refraction a careful history and an examination of old glasses and past refraction records is necessary. When the basic refraction cannot be ascertained, capital errors may occur. Given the basic refraction, errors of several diopters are still apt to occur. Calculation of intraocular lens power based on K-readings and ultrasonic measurements is therefore always advisable and a must when there is doubt about the basic refraction.
Databáze:	OpenAIRE
Externí odkaz:	https://explore.openaire.eu/search/publication?articleId=doi_________::8b71be3e39010287b1e11bd37c31059d https://doi.org/10.3928/1542-8877-19761001-12 Zobrazit plný text záznamu