Effect of Corneal and Lens Eccentricity Difference on Rigid Corneal Lens Treatment in Patients with Keratoconus

Younga Kwon; Sang Beom Han; Song A. Che; Kyungmin Koh; So Young Han; Chul Young Choi; Yong Woo Lee

doi:10.1097/ICL.0000000000001088

Effect of Corneal and Lens Eccentricity Difference on Rigid Corneal Lens Treatment in Patients with Keratoconus

Younga Kwon, Sang Beom Han, Song A. Che, Kyungmin Koh, So Young Han, Chul Young Choi, Yong Woo Lee

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

Abstract

Objective:To evaluate the effects of rigid corneal lenses (RCL) in patients with keratoconus, based on eccentricity.Methods:Eighty-four eyes from 84 patients were included in this retrospective comparative study. Based on the median value of eccentricity difference between the cornea and back surface of the RCL, the patients were divided into groups 1 (<0.08) and 2 (≥0.08). Visual acuity, refractive index, and corneal topography indices were compared before and three months after lens use.Results:Visual acuity, astigmatism, refractive error, corneal curvature, and corneal thickness improved significantly in both groups. Apical power and anterior elevation improved significantly in group 1, with small differences in eccentricity, but not in group 2. Changes in apical power before and after lens use were significantly different between the two groups.Conclusion:The RCL was effective for the cornea of keratoconus, especially when the prescription was made with a small difference in eccentricity.

Original language	English
Pages (from-to)	255-258
Number of pages	4
Journal	Eye and Contact Lens
Volume	50
Issue number	6
DOIs	https://doi.org/10.1097/ICL.0000000000001088
State	Published - 1 Jun 2024
Externally published	Yes

Keywords

Eccentricity
Keratoconus
Rigid corneal lenses
Rigid gas-permeable corneal lens

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10.1097/ICL.0000000000001088

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@article{54d47574f40a4e6bba7e9c91a763d111,

title = "Effect of Corneal and Lens Eccentricity Difference on Rigid Corneal Lens Treatment in Patients with Keratoconus",

abstract = "Objective:To evaluate the effects of rigid corneal lenses (RCL) in patients with keratoconus, based on eccentricity.Methods:Eighty-four eyes from 84 patients were included in this retrospective comparative study. Based on the median value of eccentricity difference between the cornea and back surface of the RCL, the patients were divided into groups 1 (<0.08) and 2 (≥0.08). Visual acuity, refractive index, and corneal topography indices were compared before and three months after lens use.Results:Visual acuity, astigmatism, refractive error, corneal curvature, and corneal thickness improved significantly in both groups. Apical power and anterior elevation improved significantly in group 1, with small differences in eccentricity, but not in group 2. Changes in apical power before and after lens use were significantly different between the two groups.Conclusion:The RCL was effective for the cornea of keratoconus, especially when the prescription was made with a small difference in eccentricity.",

keywords = "Eccentricity, Keratoconus, Rigid corneal lenses, Rigid gas-permeable corneal lens",

author = "Younga Kwon and Han, \{Sang Beom\} and Che, \{Song A.\} and Kyungmin Koh and Han, \{So Young\} and Choi, \{Chul Young\} and Lee, \{Yong Woo\}",

year = "2024",

month = jun,

day = "1",

doi = "10.1097/ICL.0000000000001088",

language = "English",

volume = "50",

pages = "255--258",

journal = "Eye and Contact Lens",

issn = "1542-2321",

publisher = "Lippincott Williams and Wilkins",

number = "6",

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TY - JOUR

T1 - Effect of Corneal and Lens Eccentricity Difference on Rigid Corneal Lens Treatment in Patients with Keratoconus

AU - Kwon, Younga

AU - Han, Sang Beom

AU - Che, Song A.

AU - Koh, Kyungmin

AU - Han, So Young

AU - Choi, Chul Young

AU - Lee, Yong Woo

PY - 2024/6/1

Y1 - 2024/6/1

N2 - Objective:To evaluate the effects of rigid corneal lenses (RCL) in patients with keratoconus, based on eccentricity.Methods:Eighty-four eyes from 84 patients were included in this retrospective comparative study. Based on the median value of eccentricity difference between the cornea and back surface of the RCL, the patients were divided into groups 1 (<0.08) and 2 (≥0.08). Visual acuity, refractive index, and corneal topography indices were compared before and three months after lens use.Results:Visual acuity, astigmatism, refractive error, corneal curvature, and corneal thickness improved significantly in both groups. Apical power and anterior elevation improved significantly in group 1, with small differences in eccentricity, but not in group 2. Changes in apical power before and after lens use were significantly different between the two groups.Conclusion:The RCL was effective for the cornea of keratoconus, especially when the prescription was made with a small difference in eccentricity.

AB - Objective:To evaluate the effects of rigid corneal lenses (RCL) in patients with keratoconus, based on eccentricity.Methods:Eighty-four eyes from 84 patients were included in this retrospective comparative study. Based on the median value of eccentricity difference between the cornea and back surface of the RCL, the patients were divided into groups 1 (<0.08) and 2 (≥0.08). Visual acuity, refractive index, and corneal topography indices were compared before and three months after lens use.Results:Visual acuity, astigmatism, refractive error, corneal curvature, and corneal thickness improved significantly in both groups. Apical power and anterior elevation improved significantly in group 1, with small differences in eccentricity, but not in group 2. Changes in apical power before and after lens use were significantly different between the two groups.Conclusion:The RCL was effective for the cornea of keratoconus, especially when the prescription was made with a small difference in eccentricity.

KW - Eccentricity

KW - Keratoconus

KW - Rigid corneal lenses

KW - Rigid gas-permeable corneal lens

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U2 - 10.1097/ICL.0000000000001088

DO - 10.1097/ICL.0000000000001088

M3 - Article

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AN - SCOPUS:85194112660

SN - 1542-2321

VL - 50

SP - 255

EP - 258

JO - Eye and Contact Lens

JF - Eye and Contact Lens

IS - 6

ER -

Effect of Corneal and Lens Eccentricity Difference on Rigid Corneal Lens Treatment in Patients with Keratoconus

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Keywords

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