Comparison of Hybrid Contact Lenses and Rigid Gas-Permeable Contact Lenses in Moderate and Advanced Keratoconus
Objectives:We aimed to compare the clinical results and topographic data of the new generation hybrid contact lens (HCL) and rigid gaspermeable contact lens (RGPCL) in patients with moderate and advanced keratoconus.Materials and Methods:In this prospective study, HCL users comprised group 1 and RGP...
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| Format: | Article |
| Language: | English |
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Galenos Yayinevi
2023-06-01
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| Series: | Türk Oftalmoloji Dergisi |
| Subjects: | |
| Online Access: |
http://www.oftalmoloji.org/archives/archive-detail/article-preview/comparison-of-hybrid-contact-lenses-and-rigid-gas-/60725
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| _version_ | 1797786886841827328 |
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| author | Yelda Yıldız Taşcı Özge Saraç Nurullah Çağıl Nilüfer Yeşilırmak |
| author_facet | Yelda Yıldız Taşcı Özge Saraç Nurullah Çağıl Nilüfer Yeşilırmak |
| author_sort | Yelda Yıldız Taşcı |
| collection | DOAJ |
| description | Objectives:We aimed to compare the clinical results and topographic data of the new generation hybrid contact lens (HCL) and rigid gaspermeable contact lens (RGPCL) in patients with moderate and advanced keratoconus.Materials and Methods:In this prospective study, HCL users comprised group 1 and RGPCL users comprised group 2. Snellen uncorrected visual acuity (UCVA), best corrected visual acuity (BCVA), and lens-corrected visual acuity (LCVA); manifest spherical-cylindrical values; corneal topography measurements (flat keratometry [K1], vertical keratometry [K2], mean K, maximum K [Kmax], central corneal thickness [CCT], and thinnest corneal thickness [TCT]); and cone location were recorded.Results:The study included 83 eyes of 51 patients in group 1 and 61 eyes of 40 patients in group 2. The groups were similar in age and gender (p>0.05). Mean LCVA (logMAR) was significantly lower than BCVA in both groups (p<0.001). The mean visual gain with contact lenses (Snellen chart) was 3.4±1.8 lines in group 1 and 4.0±2.1 lines in group 2. There was no significant difference between the two groups in BCVA, LCVA, or lines gained (p>0.05). There was also no significant difference between the two groups in terms of keratoconus stages, mean Kmax, CCT, TCT, or cone location (p>0.05), while mean UCVA (logMAR) and mean K were higher in group 2 (p<0.05). In both groups, the visual gain with lenses was higher in eyes with central cones, and there was significantly greater visual increase in group 2 (p=0.039).Conclusion:In moderate and advanced keratoconus, HCLs improved vision as much as RGPCLs and both lenses were more effective for central cones. Nevertheless, longer term of follow-up and larger numbers of patients are needed for long term follow-up results of HCL. |
| first_indexed | 2024-03-13T01:14:11Z |
| format | Article |
| id | doaj.art-02097f434802491283132d5e1580b726 |
| institution | Directory Open Access Journal |
| issn | 1300-0659 2147-2661 |
| language | English |
| last_indexed | 2024-03-13T01:14:11Z |
| publishDate | 2023-06-01 |
| publisher | Galenos Yayinevi |
| record_format | Article |
| series | Türk Oftalmoloji Dergisi |
| spelling | doaj.art-02097f434802491283132d5e1580b7262023-07-05T11:55:42ZengGalenos YayineviTürk Oftalmoloji Dergisi1300-06592147-26612023-06-0153314214810.4274/tjo.galenos.2022.8275413049054Comparison of Hybrid Contact Lenses and Rigid Gas-Permeable Contact Lenses in Moderate and Advanced KeratoconusYelda Yıldız Taşcı0Özge Saraç1Nurullah Çağıl2Nilüfer Yeşilırmak3 Ankara Şehir Hastanesi, Göz Hastalıkları Kliniği, Ankara, Türkiye Yıldırım Beyazıt Üniversitesi Tıp Fakültesi, Göz Hastalıkları Anabilim Dalı, Ankara, Türkiye Yıldırım Beyazıt Üniversitesi Tıp Fakültesi, Göz Hastalıkları Anabilim Dalı, Ankara, Türkiye Yıldırım Beyazıt Üniversitesi Tıp Fakültesi, Göz Hastalıkları Anabilim Dalı, Ankara, Türkiye Objectives:We aimed to compare the clinical results and topographic data of the new generation hybrid contact lens (HCL) and rigid gaspermeable contact lens (RGPCL) in patients with moderate and advanced keratoconus.Materials and Methods:In this prospective study, HCL users comprised group 1 and RGPCL users comprised group 2. Snellen uncorrected visual acuity (UCVA), best corrected visual acuity (BCVA), and lens-corrected visual acuity (LCVA); manifest spherical-cylindrical values; corneal topography measurements (flat keratometry [K1], vertical keratometry [K2], mean K, maximum K [Kmax], central corneal thickness [CCT], and thinnest corneal thickness [TCT]); and cone location were recorded.Results:The study included 83 eyes of 51 patients in group 1 and 61 eyes of 40 patients in group 2. The groups were similar in age and gender (p>0.05). Mean LCVA (logMAR) was significantly lower than BCVA in both groups (p<0.001). The mean visual gain with contact lenses (Snellen chart) was 3.4±1.8 lines in group 1 and 4.0±2.1 lines in group 2. There was no significant difference between the two groups in BCVA, LCVA, or lines gained (p>0.05). There was also no significant difference between the two groups in terms of keratoconus stages, mean Kmax, CCT, TCT, or cone location (p>0.05), while mean UCVA (logMAR) and mean K were higher in group 2 (p<0.05). In both groups, the visual gain with lenses was higher in eyes with central cones, and there was significantly greater visual increase in group 2 (p=0.039).Conclusion:In moderate and advanced keratoconus, HCLs improved vision as much as RGPCLs and both lenses were more effective for central cones. Nevertheless, longer term of follow-up and larger numbers of patients are needed for long term follow-up results of HCL. http://www.oftalmoloji.org/archives/archive-detail/article-preview/comparison-of-hybrid-contact-lenses-and-rigid-gas-/60725 rigid gas-permeable contact lenshybrid contact lenskeratoconus |
| spellingShingle | Yelda Yıldız Taşcı Özge Saraç Nurullah Çağıl Nilüfer Yeşilırmak Comparison of Hybrid Contact Lenses and Rigid Gas-Permeable Contact Lenses in Moderate and Advanced Keratoconus Türk Oftalmoloji Dergisi rigid gas-permeable contact lens hybrid contact lens keratoconus |
| title | Comparison of Hybrid Contact Lenses and Rigid Gas-Permeable Contact Lenses in Moderate and Advanced Keratoconus |
| title_full | Comparison of Hybrid Contact Lenses and Rigid Gas-Permeable Contact Lenses in Moderate and Advanced Keratoconus |
| title_fullStr | Comparison of Hybrid Contact Lenses and Rigid Gas-Permeable Contact Lenses in Moderate and Advanced Keratoconus |
| title_full_unstemmed | Comparison of Hybrid Contact Lenses and Rigid Gas-Permeable Contact Lenses in Moderate and Advanced Keratoconus |
| title_short | Comparison of Hybrid Contact Lenses and Rigid Gas-Permeable Contact Lenses in Moderate and Advanced Keratoconus |
| title_sort | comparison of hybrid contact lenses and rigid gas permeable contact lenses in moderate and advanced keratoconus |
| topic | rigid gas-permeable contact lens hybrid contact lens keratoconus |
| url |
http://www.oftalmoloji.org/archives/archive-detail/article-preview/comparison-of-hybrid-contact-lenses-and-rigid-gas-/60725
|
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