Understanding refraction and accommodation through 'retinal imaging' aberrometry

A case report

Ronald R Krueger, Michael Mrochen, Maik Kaemmerer, Theo Seiler

Research output: Contribution to journalArticle

8 Citations (Scopus)

Abstract

Purpose: A new form of aberrometry based on Tscherning optics has been proposed that captures the refraction and high-order aberrations of the eye with and without accommodation. Design: Experimental clinical optics study. Method: A green neodymium:yttrium-aluminum-garnet laser grid pattern is projected into the eye and viewed on the retina through a narrow, collimated aperture of 1 mm. The resulting aberrated pattern is photographically recorded in a normal eye in the unaccommodated and accommodated state through a pharmacologically dilated pupil without cycloplegia. Main Outcome Measures: Detection of pupil-dependent refraction and high-order optical aberration with and without accommodation. Results: Subtle pupil-dependent errors in refraction and high-order aberrations (spherical aberrations and coma) are demonstrated in the unaccommodated normal eye. Accommodation reveals slightly more spherical power through the central 3-mm zone than through a 6.5-mm pupil without significant increase in aberration. Conclusions: Tscherning aberrometry based on 'retinal imaging' is useful in defining the refraction and optical aberrations in a normal eye. Accommodation increases spherical refractive power with only small aberration changes, including negative asphericity.

Original languageEnglish (US)
Pages (from-to)674-678
Number of pages5
JournalOphthalmology
Volume108
Issue number4
DOIs
StatePublished - Jan 1 2001

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Aberrometry
Pupil
Neodymium
Solid-State Lasers
Coma
Retina
Research Design
Outcome Assessment (Health Care)

ASJC Scopus subject areas

  • Ophthalmology

Cite this

Understanding refraction and accommodation through 'retinal imaging' aberrometry : A case report. / Krueger, Ronald R; Mrochen, Michael; Kaemmerer, Maik; Seiler, Theo.

In: Ophthalmology, Vol. 108, No. 4, 01.01.2001, p. 674-678.

Research output: Contribution to journalArticle

Krueger, Ronald R ; Mrochen, Michael ; Kaemmerer, Maik ; Seiler, Theo. / Understanding refraction and accommodation through 'retinal imaging' aberrometry : A case report. In: Ophthalmology. 2001 ; Vol. 108, No. 4. pp. 674-678.
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