Rapid Determination of Intraocular Lens Tilt and Decentration Through the Undilated Pupil

David L. Guyton, Hiroshi Uozato, H. Jay Wisnicki

Research output: Contribution to journalArticle

Abstract

The apparent optical axis of an implanted intraocular lens (IOL) can be located by alignment of the examiner's hand light with the third and fourth Purkinje images from the front and back surfaces of the IOL. Tilt of the 101- can be estimated (or measured with an arc perimeter) by the angle between the apparent optical axis and the patient's line of sight (actual tilt ≈ 0.85 X apparent tilt). Decentration of the IOL is easily detected, equal to the distance of the 101 - optical axis from the center of the pupil. This simple technique can be used through the natural pupil with posterior chamber IOLs, providing the optical axis of the malpositioned IOL still passes through the pupil.

Original languageEnglish (US)
Pages (from-to)1259-1264
Number of pages6
JournalOphthalmology
Volume97
Issue number10
DOIs
StatePublished - Jan 1 1990

ASJC Scopus subject areas

  • Ophthalmology

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