Refractive outcome following radial keratotomy and combined radial and astigmatic keratotomy

G. W. Flanagan, P. S. Binder

Research output: Contribution to journalArticle

3 Citations (Scopus)

Abstract

Purpose: To determine whether the visual and refractive outcomes of combined astigmatic and radial keratotomy (AK/RK) procedures was different from that following RK for the correction of naturally occurring comPoUnd myopic astigmatism and spherical myopia. Setting: Private professional practice, San Diego, California, USA. Methods: The computer database of all incisional procedures performed by one surgeon over 10 years was reviewed to compare the visual acuity outcome of AK/RK and RK procedures. Enhancement procedures were excluded. Only data from the last office visits were analyzed to establish the relationship between visual acuity and type of keratotomy procedure performed. A multiple regression model was constructed, which included covariates of age, postoperative keratometric cylinder, and postoperative refraction. Results: After controlling for covariates, the AK/RK population had significantly Power postoperative uncorrected visual acuity levels than the RK population (P < .03) after one operation (prior to enhancement surgery). Conclusions: Using the nomograms for myopia correction for unenhanced RK cases, combined AK and RK procedures appeared to reduce the expected visual results. Surgeons may consider modifying surgical nomograms to account for the expected spherical undercorrection that can occur when myopia and astigmatism are corrected simultaneously.

Original languageEnglish (US)
Pages (from-to)1057-1063
Number of pages7
JournalJournal of cataract and refractive surgery
Volume23
Issue number7
DOIs
StatePublished - Jan 1 1997

Fingerprint

Radial Keratotomy
Myopia
Visual Acuity
Nomograms
Astigmatism
Office Visits
Professional Practice
Private Practice
Population
Databases

ASJC Scopus subject areas

  • Surgery
  • Ophthalmology
  • Sensory Systems

Cite this

Refractive outcome following radial keratotomy and combined radial and astigmatic keratotomy. / Flanagan, G. W.; Binder, P. S.

In: Journal of cataract and refractive surgery, Vol. 23, No. 7, 01.01.1997, p. 1057-1063.

Research output: Contribution to journalArticle

@article{e26ae891003944c6aaf448d6b314801a,
title = "Refractive outcome following radial keratotomy and combined radial and astigmatic keratotomy",
abstract = "Purpose: To determine whether the visual and refractive outcomes of combined astigmatic and radial keratotomy (AK/RK) procedures was different from that following RK for the correction of naturally occurring comPoUnd myopic astigmatism and spherical myopia. Setting: Private professional practice, San Diego, California, USA. Methods: The computer database of all incisional procedures performed by one surgeon over 10 years was reviewed to compare the visual acuity outcome of AK/RK and RK procedures. Enhancement procedures were excluded. Only data from the last office visits were analyzed to establish the relationship between visual acuity and type of keratotomy procedure performed. A multiple regression model was constructed, which included covariates of age, postoperative keratometric cylinder, and postoperative refraction. Results: After controlling for covariates, the AK/RK population had significantly Power postoperative uncorrected visual acuity levels than the RK population (P < .03) after one operation (prior to enhancement surgery). Conclusions: Using the nomograms for myopia correction for unenhanced RK cases, combined AK and RK procedures appeared to reduce the expected visual results. Surgeons may consider modifying surgical nomograms to account for the expected spherical undercorrection that can occur when myopia and astigmatism are corrected simultaneously.",
author = "Flanagan, {G. W.} and Binder, {P. S.}",
year = "1997",
month = "1",
day = "1",
doi = "10.1016/S0886-3350(97)80080-6",
language = "English (US)",
volume = "23",
pages = "1057--1063",
journal = "Journal of Cataract and Refractive Surgery",
issn = "0886-3350",
publisher = "Elsevier Inc.",
number = "7",

}

TY - JOUR

T1 - Refractive outcome following radial keratotomy and combined radial and astigmatic keratotomy

AU - Flanagan, G. W.

AU - Binder, P. S.

PY - 1997/1/1

Y1 - 1997/1/1

N2 - Purpose: To determine whether the visual and refractive outcomes of combined astigmatic and radial keratotomy (AK/RK) procedures was different from that following RK for the correction of naturally occurring comPoUnd myopic astigmatism and spherical myopia. Setting: Private professional practice, San Diego, California, USA. Methods: The computer database of all incisional procedures performed by one surgeon over 10 years was reviewed to compare the visual acuity outcome of AK/RK and RK procedures. Enhancement procedures were excluded. Only data from the last office visits were analyzed to establish the relationship between visual acuity and type of keratotomy procedure performed. A multiple regression model was constructed, which included covariates of age, postoperative keratometric cylinder, and postoperative refraction. Results: After controlling for covariates, the AK/RK population had significantly Power postoperative uncorrected visual acuity levels than the RK population (P < .03) after one operation (prior to enhancement surgery). Conclusions: Using the nomograms for myopia correction for unenhanced RK cases, combined AK and RK procedures appeared to reduce the expected visual results. Surgeons may consider modifying surgical nomograms to account for the expected spherical undercorrection that can occur when myopia and astigmatism are corrected simultaneously.

AB - Purpose: To determine whether the visual and refractive outcomes of combined astigmatic and radial keratotomy (AK/RK) procedures was different from that following RK for the correction of naturally occurring comPoUnd myopic astigmatism and spherical myopia. Setting: Private professional practice, San Diego, California, USA. Methods: The computer database of all incisional procedures performed by one surgeon over 10 years was reviewed to compare the visual acuity outcome of AK/RK and RK procedures. Enhancement procedures were excluded. Only data from the last office visits were analyzed to establish the relationship between visual acuity and type of keratotomy procedure performed. A multiple regression model was constructed, which included covariates of age, postoperative keratometric cylinder, and postoperative refraction. Results: After controlling for covariates, the AK/RK population had significantly Power postoperative uncorrected visual acuity levels than the RK population (P < .03) after one operation (prior to enhancement surgery). Conclusions: Using the nomograms for myopia correction for unenhanced RK cases, combined AK and RK procedures appeared to reduce the expected visual results. Surgeons may consider modifying surgical nomograms to account for the expected spherical undercorrection that can occur when myopia and astigmatism are corrected simultaneously.

UR - http://www.scopus.com/inward/record.url?scp=0030807388&partnerID=8YFLogxK

UR - http://www.scopus.com/inward/citedby.url?scp=0030807388&partnerID=8YFLogxK

U2 - 10.1016/S0886-3350(97)80080-6

DO - 10.1016/S0886-3350(97)80080-6

M3 - Article

C2 - 9379377

AN - SCOPUS:0030807388

VL - 23

SP - 1057

EP - 1063

JO - Journal of Cataract and Refractive Surgery

JF - Journal of Cataract and Refractive Surgery

SN - 0886-3350

IS - 7

ER -