Ocular residual astigmatism: effects of demographic and ocular parameters in myopic laser in situ keratomileusis

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Ocular residual astigmatism: effects of demographic and ocular parameters in myopic laser in situ keratomileusis. / Frings, Andreas; Katz, Toam; Steinberg, Johannes; Druchkiv, Vasyl; Richard, Gisbert; Linke, Stephan J.

in: J CATARACT REFR SURG, Jahrgang 40, Nr. 2, 2014, S. 232-8.

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@article{d680552da51245fd8de5c07fd7e26868,
title = "Ocular residual astigmatism: effects of demographic and ocular parameters in myopic laser in situ keratomileusis",
abstract = "PURPOSE: To analyze the influence of demographic and ocular factors on ocular residual astigmatism (ORA) in myopic laser in situ keratomileusis (LASIK).SETTING: University Medical Center Hamburg-Eppendorf, Hamburg, Germany.DESIGN: Retrospective cross-sectional data analysis.METHODS: Eyes of consecutive myopic patients scheduled for LASIK were studied to evaluate the influence on preexisting ORA of age, sex, ocular dominance, subjective cylinder and topographic astigmatism, subjective sphere, and mesopic pupil size. The ORA was determined using Alpins vector analysis. Two subgroups, defined by the ratio of ORA to preoperative refractive cylinder (R), were formed: ORA:R ≥ 1.0 and ORA:R <1.0).RESULTS: The study comprised 2991 eyes (2991 patients). The mean ORA was 0.75 diopter (D) ± 0.39 (SD) (range 0.00 to 2.00 D); 1372 (46%) eyes had ORA of 1.00 D or more. Ordinary least square estimations and odds ratios showed that subjective sphere, male sex, and dominant eye were negative predictors of the degree of preoperative ORA, while increasing age and larger mesopic pupils did not indicate ORA orientation. With-the-rule astigmatism meridian was more likely in eyes with low ORA, while oblique and against-the-rule meridians were related to high ORA.CONCLUSIONS: The preoperative assessment of refractive surgery candidates should consider the interaction between topographic, refractive, and ORA because corneal refractive surgery is more successful in eyes in which the cylinder mainly originates from the anterior cornea. The current data can help identify patients at high risk for having a significant difference between subjective cylinder and topographic astigmatism.FINANCIAL DISCLOSURE: No author has a financial or proprietary interest in any material or method mentioned.",
author = "Andreas Frings and Toam Katz and Johannes Steinberg and Vasyl Druchkiv and Gisbert Richard and Linke, {Stephan J}",
note = "Copyright {\textcopyright} 2014 ASCRS and ESCRS. Published by Elsevier Inc. All rights reserved.",
year = "2014",
doi = "10.1016/j.jcrs.2013.11.015",
language = "English",
volume = "40",
pages = "232--8",
journal = "J CATARACT REFR SURG",
issn = "0886-3350",
publisher = "Elsevier Inc.",
number = "2",

}

RIS

TY - JOUR

T1 - Ocular residual astigmatism: effects of demographic and ocular parameters in myopic laser in situ keratomileusis

AU - Frings, Andreas

AU - Katz, Toam

AU - Steinberg, Johannes

AU - Druchkiv, Vasyl

AU - Richard, Gisbert

AU - Linke, Stephan J

N1 - Copyright © 2014 ASCRS and ESCRS. Published by Elsevier Inc. All rights reserved.

PY - 2014

Y1 - 2014

N2 - PURPOSE: To analyze the influence of demographic and ocular factors on ocular residual astigmatism (ORA) in myopic laser in situ keratomileusis (LASIK).SETTING: University Medical Center Hamburg-Eppendorf, Hamburg, Germany.DESIGN: Retrospective cross-sectional data analysis.METHODS: Eyes of consecutive myopic patients scheduled for LASIK were studied to evaluate the influence on preexisting ORA of age, sex, ocular dominance, subjective cylinder and topographic astigmatism, subjective sphere, and mesopic pupil size. The ORA was determined using Alpins vector analysis. Two subgroups, defined by the ratio of ORA to preoperative refractive cylinder (R), were formed: ORA:R ≥ 1.0 and ORA:R <1.0).RESULTS: The study comprised 2991 eyes (2991 patients). The mean ORA was 0.75 diopter (D) ± 0.39 (SD) (range 0.00 to 2.00 D); 1372 (46%) eyes had ORA of 1.00 D or more. Ordinary least square estimations and odds ratios showed that subjective sphere, male sex, and dominant eye were negative predictors of the degree of preoperative ORA, while increasing age and larger mesopic pupils did not indicate ORA orientation. With-the-rule astigmatism meridian was more likely in eyes with low ORA, while oblique and against-the-rule meridians were related to high ORA.CONCLUSIONS: The preoperative assessment of refractive surgery candidates should consider the interaction between topographic, refractive, and ORA because corneal refractive surgery is more successful in eyes in which the cylinder mainly originates from the anterior cornea. The current data can help identify patients at high risk for having a significant difference between subjective cylinder and topographic astigmatism.FINANCIAL DISCLOSURE: No author has a financial or proprietary interest in any material or method mentioned.

AB - PURPOSE: To analyze the influence of demographic and ocular factors on ocular residual astigmatism (ORA) in myopic laser in situ keratomileusis (LASIK).SETTING: University Medical Center Hamburg-Eppendorf, Hamburg, Germany.DESIGN: Retrospective cross-sectional data analysis.METHODS: Eyes of consecutive myopic patients scheduled for LASIK were studied to evaluate the influence on preexisting ORA of age, sex, ocular dominance, subjective cylinder and topographic astigmatism, subjective sphere, and mesopic pupil size. The ORA was determined using Alpins vector analysis. Two subgroups, defined by the ratio of ORA to preoperative refractive cylinder (R), were formed: ORA:R ≥ 1.0 and ORA:R <1.0).RESULTS: The study comprised 2991 eyes (2991 patients). The mean ORA was 0.75 diopter (D) ± 0.39 (SD) (range 0.00 to 2.00 D); 1372 (46%) eyes had ORA of 1.00 D or more. Ordinary least square estimations and odds ratios showed that subjective sphere, male sex, and dominant eye were negative predictors of the degree of preoperative ORA, while increasing age and larger mesopic pupils did not indicate ORA orientation. With-the-rule astigmatism meridian was more likely in eyes with low ORA, while oblique and against-the-rule meridians were related to high ORA.CONCLUSIONS: The preoperative assessment of refractive surgery candidates should consider the interaction between topographic, refractive, and ORA because corneal refractive surgery is more successful in eyes in which the cylinder mainly originates from the anterior cornea. The current data can help identify patients at high risk for having a significant difference between subjective cylinder and topographic astigmatism.FINANCIAL DISCLOSURE: No author has a financial or proprietary interest in any material or method mentioned.

U2 - 10.1016/j.jcrs.2013.11.015

DO - 10.1016/j.jcrs.2013.11.015

M3 - SCORING: Journal article

C2 - 24333012

VL - 40

SP - 232

EP - 238

JO - J CATARACT REFR SURG

JF - J CATARACT REFR SURG

SN - 0886-3350

IS - 2

ER -