Corneal power measurement with a rotating Scheimpflug imaging system after Descemet-stripping automated endothelial keratoplasty

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Abstract

PURPOSE: To evaluate alterations in corneal power parameters after Descemet-stripping automated endothelial keratoplasty (DSAEK) using rotating Scheimpflug imaging. SETTING: University of Texas, Southwestern Medical Center, Dallas, Texas, USA. METHODS: Eyes that had DSAEK were evaluated with a rotating Scheimpflug imaging system (Pentacam). The outcome parameters were mean anterior and posterior keratometry (K), mean anterior radius of curvature and posterior radius of curvature, anterior and posterior astigmatism, central corneal thickness (CCT), true net power, corneal volume, keratometric power deviation, and mean zonal-equivalent K readings. These values were compared with those in a control group of age and sex-matched normal eyes. RESULTS: The DSAEK group comprised 32 eyes (28 patients) and the control group, 32 eyes. The mean anterior K, posterior K, and true net power were 42.53 diopters (D) ± 1.52 (SD),-6.80 ± 0.55 D, and 40.55 ± 1.79 D, respectively, in the DSAEK group and 43.60 ± 1.62 D,-6.20 ± 0.31 D, and 42.49 ± 1.57 D, respectively, in the control group. The posterior radius of curvature, anterior and posterior K values, and true net power were statistically significantly lower in DSAEK eyes than in control eyes (P<.01). The equivalent K readings were significantly lower in all zones in DSAEK eyes than in control eyes (P<.01). The mean CCT was significantly higher in DSAEK eyes than in control eyes (628 ± 46 μm versus 553 ± 35 μm) (P<.01). Conclusion: The true net power of the cornea decreased significantly after DSAEK, mainly because of an increase in posterior curvature.

Original languageEnglish (US)
Pages (from-to)1358-1364
Number of pages7
JournalJournal of Cataract and Refractive Surgery
Volume36
Issue number8
DOIs
StatePublished - 2010

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Descemet Stripping Endothelial Keratoplasty
Control Groups
Reading
Astigmatism
Cornea

ASJC Scopus subject areas

  • Ophthalmology
  • Sensory Systems
  • Surgery
  • Medicine(all)

Cite this

@article{0b83ed6809274fe9a8de042e4f65e728,
title = "Corneal power measurement with a rotating Scheimpflug imaging system after Descemet-stripping automated endothelial keratoplasty",
abstract = "PURPOSE: To evaluate alterations in corneal power parameters after Descemet-stripping automated endothelial keratoplasty (DSAEK) using rotating Scheimpflug imaging. SETTING: University of Texas, Southwestern Medical Center, Dallas, Texas, USA. METHODS: Eyes that had DSAEK were evaluated with a rotating Scheimpflug imaging system (Pentacam). The outcome parameters were mean anterior and posterior keratometry (K), mean anterior radius of curvature and posterior radius of curvature, anterior and posterior astigmatism, central corneal thickness (CCT), true net power, corneal volume, keratometric power deviation, and mean zonal-equivalent K readings. These values were compared with those in a control group of age and sex-matched normal eyes. RESULTS: The DSAEK group comprised 32 eyes (28 patients) and the control group, 32 eyes. The mean anterior K, posterior K, and true net power were 42.53 diopters (D) ± 1.52 (SD),-6.80 ± 0.55 D, and 40.55 ± 1.79 D, respectively, in the DSAEK group and 43.60 ± 1.62 D,-6.20 ± 0.31 D, and 42.49 ± 1.57 D, respectively, in the control group. The posterior radius of curvature, anterior and posterior K values, and true net power were statistically significantly lower in DSAEK eyes than in control eyes (P<.01). The equivalent K readings were significantly lower in all zones in DSAEK eyes than in control eyes (P<.01). The mean CCT was significantly higher in DSAEK eyes than in control eyes (628 ± 46 μm versus 553 ± 35 μm) (P<.01). Conclusion: The true net power of the cornea decreased significantly after DSAEK, mainly because of an increase in posterior curvature.",
author = "Pawan Prasher and Orkun Muftuoglu and Bowman, {Robert W} and Cavanagh, {Harrison D} and McCulley, {James P} and Venkateswara Mootha",
year = "2010",
doi = "10.1016/j.jcrs.2010.01.032",
language = "English (US)",
volume = "36",
pages = "1358--1364",
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issn = "0886-3350",
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TY - JOUR

T1 - Corneal power measurement with a rotating Scheimpflug imaging system after Descemet-stripping automated endothelial keratoplasty

AU - Prasher, Pawan

AU - Muftuoglu, Orkun

AU - Bowman, Robert W

AU - Cavanagh, Harrison D

AU - McCulley, James P

AU - Mootha, Venkateswara

PY - 2010

Y1 - 2010

N2 - PURPOSE: To evaluate alterations in corneal power parameters after Descemet-stripping automated endothelial keratoplasty (DSAEK) using rotating Scheimpflug imaging. SETTING: University of Texas, Southwestern Medical Center, Dallas, Texas, USA. METHODS: Eyes that had DSAEK were evaluated with a rotating Scheimpflug imaging system (Pentacam). The outcome parameters were mean anterior and posterior keratometry (K), mean anterior radius of curvature and posterior radius of curvature, anterior and posterior astigmatism, central corneal thickness (CCT), true net power, corneal volume, keratometric power deviation, and mean zonal-equivalent K readings. These values were compared with those in a control group of age and sex-matched normal eyes. RESULTS: The DSAEK group comprised 32 eyes (28 patients) and the control group, 32 eyes. The mean anterior K, posterior K, and true net power were 42.53 diopters (D) ± 1.52 (SD),-6.80 ± 0.55 D, and 40.55 ± 1.79 D, respectively, in the DSAEK group and 43.60 ± 1.62 D,-6.20 ± 0.31 D, and 42.49 ± 1.57 D, respectively, in the control group. The posterior radius of curvature, anterior and posterior K values, and true net power were statistically significantly lower in DSAEK eyes than in control eyes (P<.01). The equivalent K readings were significantly lower in all zones in DSAEK eyes than in control eyes (P<.01). The mean CCT was significantly higher in DSAEK eyes than in control eyes (628 ± 46 μm versus 553 ± 35 μm) (P<.01). Conclusion: The true net power of the cornea decreased significantly after DSAEK, mainly because of an increase in posterior curvature.

AB - PURPOSE: To evaluate alterations in corneal power parameters after Descemet-stripping automated endothelial keratoplasty (DSAEK) using rotating Scheimpflug imaging. SETTING: University of Texas, Southwestern Medical Center, Dallas, Texas, USA. METHODS: Eyes that had DSAEK were evaluated with a rotating Scheimpflug imaging system (Pentacam). The outcome parameters were mean anterior and posterior keratometry (K), mean anterior radius of curvature and posterior radius of curvature, anterior and posterior astigmatism, central corneal thickness (CCT), true net power, corneal volume, keratometric power deviation, and mean zonal-equivalent K readings. These values were compared with those in a control group of age and sex-matched normal eyes. RESULTS: The DSAEK group comprised 32 eyes (28 patients) and the control group, 32 eyes. The mean anterior K, posterior K, and true net power were 42.53 diopters (D) ± 1.52 (SD),-6.80 ± 0.55 D, and 40.55 ± 1.79 D, respectively, in the DSAEK group and 43.60 ± 1.62 D,-6.20 ± 0.31 D, and 42.49 ± 1.57 D, respectively, in the control group. The posterior radius of curvature, anterior and posterior K values, and true net power were statistically significantly lower in DSAEK eyes than in control eyes (P<.01). The equivalent K readings were significantly lower in all zones in DSAEK eyes than in control eyes (P<.01). The mean CCT was significantly higher in DSAEK eyes than in control eyes (628 ± 46 μm versus 553 ± 35 μm) (P<.01). Conclusion: The true net power of the cornea decreased significantly after DSAEK, mainly because of an increase in posterior curvature.

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U2 - 10.1016/j.jcrs.2010.01.032

DO - 10.1016/j.jcrs.2010.01.032

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SN - 0886-3350

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