Validation of a novel iPhone application for evaluating near functional visual acuity
Abstract Monitoring dynamic changes in near vision is important for early detection of presbyopia. This study assessed the accuracy and reliability of a new smartphone-based application, the Smart Vision Check (SVC), compared with those of a conventional device (AS-28; Kowa, Aichi, Japan), for measu...
| Main Authors: | , , , , , , |
|---|---|
| Format: | Article |
| Language: | English |
| Published: |
Nature Portfolio
2022-12-01
|
| Series: | Scientific Reports |
| Online Access: | https://doi.org/10.1038/s41598-022-27011-2 |
| _version_ | 1797973684491649024 |
|---|---|
| author | Akiko Hanyuda Miyuki Kubota Shunsuke Kubota Sachiko Masui Kenya Yuki Kazuo Tsubota Kazuno Negishi |
| author_facet | Akiko Hanyuda Miyuki Kubota Shunsuke Kubota Sachiko Masui Kenya Yuki Kazuo Tsubota Kazuno Negishi |
| author_sort | Akiko Hanyuda |
| collection | DOAJ |
| description | Abstract Monitoring dynamic changes in near vision is important for early detection of presbyopia. This study assessed the accuracy and reliability of a new smartphone-based application, the Smart Vision Check (SVC), compared with those of a conventional device (AS-28; Kowa, Aichi, Japan), for measuring near functional visual acuity (NFVA). We enrolled 115 healthy volunteers aged ≥ 20 years with bilateral best-corrected visual acuity of ≥ 20/25. The SVC was designed for use on an Apple iPhone SE2 to measure NFVA by tapping on the orientation icon manually. Conventional FVA was measured using the AS-28 with − 2.50 D added to the best distance correction at baseline. There was no significant difference in NFVA-related measurements between the AS-28 and SVC (P > 0.05). The Spearman correlation coefficients of NFVA measurements between the two devices were over 0.60 (P < 0.001). The Bland–Altman plot indicated minimal bias with limits of agreements of ± 0.34 logMAR for NFVA with habitual correction when comparing the AS-28 and SVC. The intraclass correlation coefficient of the repeated SVC-measured NFVA was 0.915 (95% CI 0.800–0.969). In summary, the SVC has the potential to evaluate NFVA in a relatively easy manner. Applied clinically, the SVC can be useful for presbyopia screening. |
| first_indexed | 2024-04-11T04:07:08Z |
| format | Article |
| id | doaj.art-26998847903f44b1a2421f6ae5cd5668 |
| institution | Directory Open Access Journal |
| issn | 2045-2322 |
| language | English |
| last_indexed | 2024-04-11T04:07:08Z |
| publishDate | 2022-12-01 |
| publisher | Nature Portfolio |
| record_format | Article |
| series | Scientific Reports |
| spelling | doaj.art-26998847903f44b1a2421f6ae5cd56682023-01-01T12:16:35ZengNature PortfolioScientific Reports2045-23222022-12-011211910.1038/s41598-022-27011-2Validation of a novel iPhone application for evaluating near functional visual acuityAkiko Hanyuda0Miyuki Kubota1Shunsuke Kubota2Sachiko Masui3Kenya Yuki4Kazuo Tsubota5Kazuno Negishi6Department of Ophthalmology, Keio University School of MedicineDepartment of Ophthalmology, Keio University School of MedicineDepartment of Ophthalmology, Keio University School of MedicineDepartment of Ophthalmology, Keio University School of MedicineDepartment of Ophthalmology, Keio University School of MedicineDepartment of Ophthalmology, Keio University School of MedicineDepartment of Ophthalmology, Keio University School of MedicineAbstract Monitoring dynamic changes in near vision is important for early detection of presbyopia. This study assessed the accuracy and reliability of a new smartphone-based application, the Smart Vision Check (SVC), compared with those of a conventional device (AS-28; Kowa, Aichi, Japan), for measuring near functional visual acuity (NFVA). We enrolled 115 healthy volunteers aged ≥ 20 years with bilateral best-corrected visual acuity of ≥ 20/25. The SVC was designed for use on an Apple iPhone SE2 to measure NFVA by tapping on the orientation icon manually. Conventional FVA was measured using the AS-28 with − 2.50 D added to the best distance correction at baseline. There was no significant difference in NFVA-related measurements between the AS-28 and SVC (P > 0.05). The Spearman correlation coefficients of NFVA measurements between the two devices were over 0.60 (P < 0.001). The Bland–Altman plot indicated minimal bias with limits of agreements of ± 0.34 logMAR for NFVA with habitual correction when comparing the AS-28 and SVC. The intraclass correlation coefficient of the repeated SVC-measured NFVA was 0.915 (95% CI 0.800–0.969). In summary, the SVC has the potential to evaluate NFVA in a relatively easy manner. Applied clinically, the SVC can be useful for presbyopia screening.https://doi.org/10.1038/s41598-022-27011-2 |
| spellingShingle | Akiko Hanyuda Miyuki Kubota Shunsuke Kubota Sachiko Masui Kenya Yuki Kazuo Tsubota Kazuno Negishi Validation of a novel iPhone application for evaluating near functional visual acuity Scientific Reports |
| title | Validation of a novel iPhone application for evaluating near functional visual acuity |
| title_full | Validation of a novel iPhone application for evaluating near functional visual acuity |
| title_fullStr | Validation of a novel iPhone application for evaluating near functional visual acuity |
| title_full_unstemmed | Validation of a novel iPhone application for evaluating near functional visual acuity |
| title_short | Validation of a novel iPhone application for evaluating near functional visual acuity |
| title_sort | validation of a novel iphone application for evaluating near functional visual acuity |
| url | https://doi.org/10.1038/s41598-022-27011-2 |
| work_keys_str_mv | AT akikohanyuda validationofanoveliphoneapplicationforevaluatingnearfunctionalvisualacuity AT miyukikubota validationofanoveliphoneapplicationforevaluatingnearfunctionalvisualacuity AT shunsukekubota validationofanoveliphoneapplicationforevaluatingnearfunctionalvisualacuity AT sachikomasui validationofanoveliphoneapplicationforevaluatingnearfunctionalvisualacuity AT kenyayuki validationofanoveliphoneapplicationforevaluatingnearfunctionalvisualacuity AT kazuotsubota validationofanoveliphoneapplicationforevaluatingnearfunctionalvisualacuity AT kazunonegishi validationofanoveliphoneapplicationforevaluatingnearfunctionalvisualacuity |