Cargando…

Clinical evaluation of flat peripheral curve design with aspherical-curve and multi-curve hard contact lenses for keratoconus

Aspherical- and multi-curve rigid gas-permeable hard contact lenses (HCLs) have a flattened curve in the peripheral zone and are mostly used for patients with keratoconus who cannot wear glasses, soft contact lenses, or spherical HCLs. In this retrospective study, a total of 95 eyes of 77 patients w...

Descripción completa

Detalles Bibliográficos
Autores principales: Kumanomido, Takashi, Kamiya, Kazutaka, Takahashi, Masahide, Tsujisawa, Tatsuhiko, Hayakawa, Hideki, Ando, Wakako, Utsumi, Yoshikazu, Shoji, Nobuyuki
Formato: Online Artículo Texto
Lenguaje:English
Publicado: Public Library of Science 2022
Materias:
Acceso en línea:https://www.ncbi.nlm.nih.gov/pmc/articles/PMC8824338/
https://www.ncbi.nlm.nih.gov/pubmed/35134078
http://dx.doi.org/10.1371/journal.pone.0263506
_version_ 1784646993925111808
author Kumanomido, Takashi
Kamiya, Kazutaka
Takahashi, Masahide
Tsujisawa, Tatsuhiko
Hayakawa, Hideki
Ando, Wakako
Utsumi, Yoshikazu
Shoji, Nobuyuki
author_facet Kumanomido, Takashi
Kamiya, Kazutaka
Takahashi, Masahide
Tsujisawa, Tatsuhiko
Hayakawa, Hideki
Ando, Wakako
Utsumi, Yoshikazu
Shoji, Nobuyuki
author_sort Kumanomido, Takashi
collection PubMed
description Aspherical- and multi-curve rigid gas-permeable hard contact lenses (HCLs) have a flattened curve in the peripheral zone and are mostly used for patients with keratoconus who cannot wear glasses, soft contact lenses, or spherical HCLs. In this retrospective study, a total of 95 eyes of 77 patients who used aspherical- or multi-curve HCLs (mean age: 40.0 ± 11.0 years) were evaluated. This study examined the types of aspherical- and multi-curve HCLs, best-corrected visual acuity (BCVA) values before and after wearing HCLs, the association with the Amsler-Krumeich classification, duration of wear, corneal/conjunctival disorder, and the frequency of changing HCLs. There were 78 eyes that used aspherical-curve HCLs and 17 that used multi-curve HCLs. BCVA significantly improved from 0.42 logMAR to 0.06 logMAR after wearing either form of HCL. The Amsler-Krumeich classification showed that aspherical-curve HCLs were commonly used for patients with stage 2 keratoconus, and multi-curve HCLs were commonly used for stage 4 patients. The BCVA values were worse when the disease stage was more severe (stages 3 and 4) regardless of HCL type. The mean base curve of the lenses was steeper in multi-curve HCLs than in aspherical-curve HCLs. The more severe the disease stage, the steeper the base curve in both aspherical- and multi-curve HCLs. The duration of wear significantly improved from 2.1 h to 10.2 h, and corneal/conjunctival disorder similarly improved. The mean frequency of changing HCL types was 1.1 times. This study suggests that a flat peripheral curve design with aspherical- and multi-curve HCLs is useful for patients with keratoconus.
format Online
Article
Text
id pubmed-8824338
institution National Center for Biotechnology Information
language English
publishDate 2022
publisher Public Library of Science
record_format MEDLINE/PubMed
spelling pubmed-88243382022-02-09 Clinical evaluation of flat peripheral curve design with aspherical-curve and multi-curve hard contact lenses for keratoconus Kumanomido, Takashi Kamiya, Kazutaka Takahashi, Masahide Tsujisawa, Tatsuhiko Hayakawa, Hideki Ando, Wakako Utsumi, Yoshikazu Shoji, Nobuyuki PLoS One Research Article Aspherical- and multi-curve rigid gas-permeable hard contact lenses (HCLs) have a flattened curve in the peripheral zone and are mostly used for patients with keratoconus who cannot wear glasses, soft contact lenses, or spherical HCLs. In this retrospective study, a total of 95 eyes of 77 patients who used aspherical- or multi-curve HCLs (mean age: 40.0 ± 11.0 years) were evaluated. This study examined the types of aspherical- and multi-curve HCLs, best-corrected visual acuity (BCVA) values before and after wearing HCLs, the association with the Amsler-Krumeich classification, duration of wear, corneal/conjunctival disorder, and the frequency of changing HCLs. There were 78 eyes that used aspherical-curve HCLs and 17 that used multi-curve HCLs. BCVA significantly improved from 0.42 logMAR to 0.06 logMAR after wearing either form of HCL. The Amsler-Krumeich classification showed that aspherical-curve HCLs were commonly used for patients with stage 2 keratoconus, and multi-curve HCLs were commonly used for stage 4 patients. The BCVA values were worse when the disease stage was more severe (stages 3 and 4) regardless of HCL type. The mean base curve of the lenses was steeper in multi-curve HCLs than in aspherical-curve HCLs. The more severe the disease stage, the steeper the base curve in both aspherical- and multi-curve HCLs. The duration of wear significantly improved from 2.1 h to 10.2 h, and corneal/conjunctival disorder similarly improved. The mean frequency of changing HCL types was 1.1 times. This study suggests that a flat peripheral curve design with aspherical- and multi-curve HCLs is useful for patients with keratoconus. Public Library of Science 2022-02-08 /pmc/articles/PMC8824338/ /pubmed/35134078 http://dx.doi.org/10.1371/journal.pone.0263506 Text en © 2022 Kumanomido et al https://creativecommons.org/licenses/by/4.0/This is an open access article distributed under the terms of the Creative Commons Attribution License (https://creativecommons.org/licenses/by/4.0/) , which permits unrestricted use, distribution, and reproduction in any medium, provided the original author and source are credited.
spellingShingle Research Article
Kumanomido, Takashi
Kamiya, Kazutaka
Takahashi, Masahide
Tsujisawa, Tatsuhiko
Hayakawa, Hideki
Ando, Wakako
Utsumi, Yoshikazu
Shoji, Nobuyuki
Clinical evaluation of flat peripheral curve design with aspherical-curve and multi-curve hard contact lenses for keratoconus
title Clinical evaluation of flat peripheral curve design with aspherical-curve and multi-curve hard contact lenses for keratoconus
title_full Clinical evaluation of flat peripheral curve design with aspherical-curve and multi-curve hard contact lenses for keratoconus
title_fullStr Clinical evaluation of flat peripheral curve design with aspherical-curve and multi-curve hard contact lenses for keratoconus
title_full_unstemmed Clinical evaluation of flat peripheral curve design with aspherical-curve and multi-curve hard contact lenses for keratoconus
title_short Clinical evaluation of flat peripheral curve design with aspherical-curve and multi-curve hard contact lenses for keratoconus
title_sort clinical evaluation of flat peripheral curve design with aspherical-curve and multi-curve hard contact lenses for keratoconus
topic Research Article
url https://www.ncbi.nlm.nih.gov/pmc/articles/PMC8824338/
https://www.ncbi.nlm.nih.gov/pubmed/35134078
http://dx.doi.org/10.1371/journal.pone.0263506
work_keys_str_mv AT kumanomidotakashi clinicalevaluationofflatperipheralcurvedesignwithasphericalcurveandmulticurvehardcontactlensesforkeratoconus
AT kamiyakazutaka clinicalevaluationofflatperipheralcurvedesignwithasphericalcurveandmulticurvehardcontactlensesforkeratoconus
AT takahashimasahide clinicalevaluationofflatperipheralcurvedesignwithasphericalcurveandmulticurvehardcontactlensesforkeratoconus
AT tsujisawatatsuhiko clinicalevaluationofflatperipheralcurvedesignwithasphericalcurveandmulticurvehardcontactlensesforkeratoconus
AT hayakawahideki clinicalevaluationofflatperipheralcurvedesignwithasphericalcurveandmulticurvehardcontactlensesforkeratoconus
AT andowakako clinicalevaluationofflatperipheralcurvedesignwithasphericalcurveandmulticurvehardcontactlensesforkeratoconus
AT utsumiyoshikazu clinicalevaluationofflatperipheralcurvedesignwithasphericalcurveandmulticurvehardcontactlensesforkeratoconus
AT shojinobuyuki clinicalevaluationofflatperipheralcurvedesignwithasphericalcurveandmulticurvehardcontactlensesforkeratoconus