Impact of rigid gas-permeable contact lens on keratometric indices and corneal thickness of keratoconus eyes examined with anterior segment optical coherence tomography.
<h4>Purpose/aim</h4>Detecting keratoconus (KC) progression helps determine the surgical indication for corneal cross-linking (CXL). This retrospective observational study aimed to examine changes in keratometric indices and corneal thickness in patients with KC who used rigid gas-permeab...
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| Format: | Article |
| Language: | English |
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Public Library of Science (PLoS)
2022-01-01
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| Series: | PLoS ONE |
| Online Access: | https://doi.org/10.1371/journal.pone.0270519 |
| _version_ | 1811311625237430272 |
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| author | Kaho Akiyama Takashi Ono Hitoha Ishii Lily Wei Chen Kohdai Kitamoto Tetsuya Toyono Junko Yoshida Makoto Aihara Takashi Miyai |
| author_facet | Kaho Akiyama Takashi Ono Hitoha Ishii Lily Wei Chen Kohdai Kitamoto Tetsuya Toyono Junko Yoshida Makoto Aihara Takashi Miyai |
| author_sort | Kaho Akiyama |
| collection | DOAJ |
| description | <h4>Purpose/aim</h4>Detecting keratoconus (KC) progression helps determine the surgical indication for corneal cross-linking (CXL). This retrospective observational study aimed to examine changes in keratometric indices and corneal thickness in patients with KC who used rigid gas-permeable (RGP) contact lenses.<h4>Materials and methods</h4>This study involved 31 eyes (31 patients) diagnosed with KC. No patient had used RGP or any other type of contact lenses for at least 1 month. Corneal topographic data were obtained using three-dimensional anterior segment optical coherence tomography before and after >1 month of RGP lens use.<h4>Results</h4>The average and maximum keratometry values changed after using an RGP lens (-1.05 ± 1.92 D, p < 0.01 and -1.65 ± 4.20 D, p = 0.04, respectively); the spherical component of the anterior corneal surface became significantly smaller (p = 0.02). No change was observed in the central or thinnest corneal thickness values. Keratometric changes were greater in eyes with severe KC than in those with moderate KC (p = 0.014).<h4>Conclusions</h4>Keratometry and spherical components of the anterior corneal surface values decreased after RGP lens use; keratometric changes were greater in eyes with severe KC than in those with moderate KC. Corneal progression indices, including corneal thickness, posterior keratometry, and irregular astigmatism values, mostly remained unchanged. It is important to consider these findings when evaluating corneal topography of KC and preparing CXL. |
| first_indexed | 2024-04-13T10:22:03Z |
| format | Article |
| id | doaj.art-a0657a1d508d4f6e922291735befa9e0 |
| institution | Directory Open Access Journal |
| issn | 1932-6203 |
| language | English |
| last_indexed | 2024-04-13T10:22:03Z |
| publishDate | 2022-01-01 |
| publisher | Public Library of Science (PLoS) |
| record_format | Article |
| series | PLoS ONE |
| spelling | doaj.art-a0657a1d508d4f6e922291735befa9e02022-12-22T02:50:28ZengPublic Library of Science (PLoS)PLoS ONE1932-62032022-01-01177e027051910.1371/journal.pone.0270519Impact of rigid gas-permeable contact lens on keratometric indices and corneal thickness of keratoconus eyes examined with anterior segment optical coherence tomography.Kaho AkiyamaTakashi OnoHitoha IshiiLily Wei ChenKohdai KitamotoTetsuya ToyonoJunko YoshidaMakoto AiharaTakashi Miyai<h4>Purpose/aim</h4>Detecting keratoconus (KC) progression helps determine the surgical indication for corneal cross-linking (CXL). This retrospective observational study aimed to examine changes in keratometric indices and corneal thickness in patients with KC who used rigid gas-permeable (RGP) contact lenses.<h4>Materials and methods</h4>This study involved 31 eyes (31 patients) diagnosed with KC. No patient had used RGP or any other type of contact lenses for at least 1 month. Corneal topographic data were obtained using three-dimensional anterior segment optical coherence tomography before and after >1 month of RGP lens use.<h4>Results</h4>The average and maximum keratometry values changed after using an RGP lens (-1.05 ± 1.92 D, p < 0.01 and -1.65 ± 4.20 D, p = 0.04, respectively); the spherical component of the anterior corneal surface became significantly smaller (p = 0.02). No change was observed in the central or thinnest corneal thickness values. Keratometric changes were greater in eyes with severe KC than in those with moderate KC (p = 0.014).<h4>Conclusions</h4>Keratometry and spherical components of the anterior corneal surface values decreased after RGP lens use; keratometric changes were greater in eyes with severe KC than in those with moderate KC. Corneal progression indices, including corneal thickness, posterior keratometry, and irregular astigmatism values, mostly remained unchanged. It is important to consider these findings when evaluating corneal topography of KC and preparing CXL.https://doi.org/10.1371/journal.pone.0270519 |
| spellingShingle | Kaho Akiyama Takashi Ono Hitoha Ishii Lily Wei Chen Kohdai Kitamoto Tetsuya Toyono Junko Yoshida Makoto Aihara Takashi Miyai Impact of rigid gas-permeable contact lens on keratometric indices and corneal thickness of keratoconus eyes examined with anterior segment optical coherence tomography. PLoS ONE |
| title | Impact of rigid gas-permeable contact lens on keratometric indices and corneal thickness of keratoconus eyes examined with anterior segment optical coherence tomography. |
| title_full | Impact of rigid gas-permeable contact lens on keratometric indices and corneal thickness of keratoconus eyes examined with anterior segment optical coherence tomography. |
| title_fullStr | Impact of rigid gas-permeable contact lens on keratometric indices and corneal thickness of keratoconus eyes examined with anterior segment optical coherence tomography. |
| title_full_unstemmed | Impact of rigid gas-permeable contact lens on keratometric indices and corneal thickness of keratoconus eyes examined with anterior segment optical coherence tomography. |
| title_short | Impact of rigid gas-permeable contact lens on keratometric indices and corneal thickness of keratoconus eyes examined with anterior segment optical coherence tomography. |
| title_sort | impact of rigid gas permeable contact lens on keratometric indices and corneal thickness of keratoconus eyes examined with anterior segment optical coherence tomography |
| url | https://doi.org/10.1371/journal.pone.0270519 |
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