Explanation for good visual acuity in uncorrected residual hyperopia and presbyopia after radial keratotomy

R. P. Hemenger; A. Tomlinson; P. J. McDonnell

Explanation for good visual acuity in uncorrected residual hyperopia and presbyopia after radial keratotomy

R. P. Hemenger, A. Tomlinson^*, P. J. McDonnell

^*Corresponding author for this work

Research output: Contribution to journal › Article › peer-review

9 Citations (Scopus)

Abstract

It has been observed that, after radial keratotomy (RK), uncorrected residual hyperopes may have better visual acuity than expected and that some presbyopes, corrected only for distance, have adequate near-vision. We offer a possible explanation for these observations by showing that the increased spherical aberration after RK may produce a second focus 1.5 diopters or more in front of the principal focus of the eye.

Original language	English
Pages (from-to)	1644-1646
Number of pages	3
Journal	Investigative Ophthalmology and Visual Science
Volume	31
Issue number	8
Publication status	Published - Aug 1990
Externally published	Yes

Keywords

radial keratotomy
spherical aberration
vision correction

ASJC Scopus subject areas

Ophthalmology
Sensory Systems
Cellular and Molecular Neuroscience

Cite this

@article{b1abdb24868346679f7e3eeb478976b8,

title = "Explanation for good visual acuity in uncorrected residual hyperopia and presbyopia after radial keratotomy",

abstract = "It has been observed that, after radial keratotomy (RK), uncorrected residual hyperopes may have better visual acuity than expected and that some presbyopes, corrected only for distance, have adequate near-vision. We offer a possible explanation for these observations by showing that the increased spherical aberration after RK may produce a second focus 1.5 diopters or more in front of the principal focus of the eye.",

keywords = "radial keratotomy, spherical aberration, vision correction",

author = "Hemenger, {R. P.} and A. Tomlinson and McDonnell, {P. J.}",

year = "1990",

month = aug,

language = "English",

volume = "31",

pages = "1644--1646",

journal = "Investigative Ophthalmology and Visual Science",

issn = "0146-0404",

publisher = "Association for Research in Vision and Ophthalmology Inc.",

number = "8",

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TY - JOUR

T1 - Explanation for good visual acuity in uncorrected residual hyperopia and presbyopia after radial keratotomy

AU - Hemenger, R. P.

AU - Tomlinson, A.

AU - McDonnell, P. J.

PY - 1990/8

Y1 - 1990/8

N2 - It has been observed that, after radial keratotomy (RK), uncorrected residual hyperopes may have better visual acuity than expected and that some presbyopes, corrected only for distance, have adequate near-vision. We offer a possible explanation for these observations by showing that the increased spherical aberration after RK may produce a second focus 1.5 diopters or more in front of the principal focus of the eye.

AB - It has been observed that, after radial keratotomy (RK), uncorrected residual hyperopes may have better visual acuity than expected and that some presbyopes, corrected only for distance, have adequate near-vision. We offer a possible explanation for these observations by showing that the increased spherical aberration after RK may produce a second focus 1.5 diopters or more in front of the principal focus of the eye.

KW - radial keratotomy

KW - spherical aberration

KW - vision correction

M3 - Article

C2 - 2387693

AN - SCOPUS:0025100281

SN - 0146-0404

VL - 31

SP - 1644

EP - 1646

JO - Investigative Ophthalmology and Visual Science

JF - Investigative Ophthalmology and Visual Science

IS - 8

ER -

Explanation for good visual acuity in uncorrected residual hyperopia and presbyopia after radial keratotomy

Abstract

Keywords

ASJC Scopus subject areas

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