Accommodative response in various design soft contact lens wearers
The progression of myopia in young adults due to inadequate accommodation is currently one of the global research challenges. Studies have demonstrated that multifocal contact lenses have a different effect on accommodative response. The aim of this study was to assess the accommodative lag using va...
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| Format: | Article |
| Language: | English |
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Estonian Academy Publishers
2021-09-01
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| Series: | Proceedings of the Estonian Academy of Sciences |
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| Online Access: | https://kirj.ee/wp-content/plugins/kirj/pub/proc-4S-2021-333-340_20210923175824.pdf |
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| author | Evita Kassaliete Anastasija Gordeja Karola Panke Anete Petrova Gunta Krumina |
| author_facet | Evita Kassaliete Anastasija Gordeja Karola Panke Anete Petrova Gunta Krumina |
| author_sort | Evita Kassaliete |
| collection | DOAJ |
| description | The progression of myopia in young adults due to inadequate accommodation is currently one of the global research challenges. Studies have demonstrated that multifocal contact lenses have a different effect on accommodative response. The aim of this study was to assess the accommodative lag using various design multifocal contact lenses at different working distances. The study was conducted on 10 emmetropic subjects aged 22â28 years. An open-field autorefractor PowerRef 3 was used to assess the response of eye accommodation to stimuli placed at a distance of 25 cm and 40 cm for subjects wearing monofocal and multifocal contact lenses. To determine the effectiveness of contact lens design for accommodative lag compensation, the results of the accommodative lag with and without contact lenses were compared. The measured accommodative lag for stimuli at 40 cm was 1.05 ± 0.11 D and for stimuli at 25 cm 1.53 ± 0.11 D. Regarding the effect of multifocal contact lenses, it was determined that the near vision power zone in the centre of the lens reduces the accommodative lag, while the respective distance vision power zone does not produce a statistically significant change. The near power zone in the centre of the multifocal contact lens effectively affects the accommodative lag by reducing accommodation inaccuracy as effectively as spherical contact lenses with positive power. The addition design for multifocal lenses (Med or Hi) does not significantly affect the accommodative lag. The results of centre-distance multifocal contact lenses depend on the strength of the addition used. |
| first_indexed | 2024-12-10T23:58:36Z |
| format | Article |
| id | doaj.art-aba3f92000194ac587e730751b6fe3aa |
| institution | Directory Open Access Journal |
| issn | 1736-6046 1736-7530 |
| language | English |
| last_indexed | 2024-12-10T23:58:36Z |
| publishDate | 2021-09-01 |
| publisher | Estonian Academy Publishers |
| record_format | Article |
| series | Proceedings of the Estonian Academy of Sciences |
| spelling | doaj.art-aba3f92000194ac587e730751b6fe3aa2022-12-22T01:28:32ZengEstonian Academy PublishersProceedings of the Estonian Academy of Sciences1736-60461736-75302021-09-01704S33334010.3176/proc.2021.4S.0410.3176/proc.2021.4S.04Accommodative response in various design soft contact lens wearersEvita Kassaliete0Anastasija Gordeja1Karola Panke2Anete Petrova3Gunta Krumina4Department of Optometry and Vision Science, Faculty of Physics, Mathematics and Optometry, University of Latvia, Jelgavas iela 1, LV-1004, Riga, LatviaDepartment of Optometry and Vision Science, Faculty of Physics, Mathematics and Optometry, University of Latvia, Jelgavas iela 1, LV-1004, Riga, LatviaDepartment of Optometry and Vision Science, Faculty of Physics, Mathematics and Optometry, University of Latvia, Jelgavas iela 1, LV-1004, Riga, LatviaDepartment of Optometry and Vision Science, Faculty of Physics, Mathematics and Optometry, University of Latvia, Jelgavas iela 1, LV-1004, Riga, LatviaDepartment of Optometry and Vision Science, Faculty of Physics, Mathematics and Optometry, University of Latvia, Jelgavas iela 1, LV-1004, Riga, LatviaThe progression of myopia in young adults due to inadequate accommodation is currently one of the global research challenges. Studies have demonstrated that multifocal contact lenses have a different effect on accommodative response. The aim of this study was to assess the accommodative lag using various design multifocal contact lenses at different working distances. The study was conducted on 10 emmetropic subjects aged 22â28 years. An open-field autorefractor PowerRef 3 was used to assess the response of eye accommodation to stimuli placed at a distance of 25 cm and 40 cm for subjects wearing monofocal and multifocal contact lenses. To determine the effectiveness of contact lens design for accommodative lag compensation, the results of the accommodative lag with and without contact lenses were compared. The measured accommodative lag for stimuli at 40 cm was 1.05 ± 0.11 D and for stimuli at 25 cm 1.53 ± 0.11 D. Regarding the effect of multifocal contact lenses, it was determined that the near vision power zone in the centre of the lens reduces the accommodative lag, while the respective distance vision power zone does not produce a statistically significant change. The near power zone in the centre of the multifocal contact lens effectively affects the accommodative lag by reducing accommodation inaccuracy as effectively as spherical contact lenses with positive power. The addition design for multifocal lenses (Med or Hi) does not significantly affect the accommodative lag. The results of centre-distance multifocal contact lenses depend on the strength of the addition used.https://kirj.ee/wp-content/plugins/kirj/pub/proc-4S-2021-333-340_20210923175824.pdfaccommodative lagmultifocal contact lensesnear additionmyopia control. |
| spellingShingle | Evita Kassaliete Anastasija Gordeja Karola Panke Anete Petrova Gunta Krumina Accommodative response in various design soft contact lens wearers Proceedings of the Estonian Academy of Sciences accommodative lag multifocal contact lenses near addition myopia control. |
| title | Accommodative response in various design soft contact lens wearers |
| title_full | Accommodative response in various design soft contact lens wearers |
| title_fullStr | Accommodative response in various design soft contact lens wearers |
| title_full_unstemmed | Accommodative response in various design soft contact lens wearers |
| title_short | Accommodative response in various design soft contact lens wearers |
| title_sort | accommodative response in various design soft contact lens wearers |
| topic | accommodative lag multifocal contact lenses near addition myopia control. |
| url | https://kirj.ee/wp-content/plugins/kirj/pub/proc-4S-2021-333-340_20210923175824.pdf |
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