Wearable Light Loggers in Field Conditions: Corneal Light Characteristics, User Compliance, and Acceptance
Understanding user challenges with light dosimeters is crucial for designing more acceptable devices and advancing light exposure research. We systematically evaluated the usability and acceptability of a light dosimeter (lido) with 29 participants who wore the dosimeter near the corneal plane of th...
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| Format: | Article |
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MDPI AG
2024-10-01
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| Series: | Clocks & Sleep |
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| Online Access: | https://www.mdpi.com/2624-5175/6/4/42 |
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| author | Oliver Stefani Reto Marek Jürg Schwarz Sina Plate Johannes Zauner Björn Schrader |
| author_facet | Oliver Stefani Reto Marek Jürg Schwarz Sina Plate Johannes Zauner Björn Schrader |
| author_sort | Oliver Stefani |
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| description | Understanding user challenges with light dosimeters is crucial for designing more acceptable devices and advancing light exposure research. We systematically evaluated the usability and acceptability of a light dosimeter (lido) with 29 participants who wore the dosimeter near the corneal plane of the eye for 5 days. Common reasons for not wearing the dosimeter included exercise, recharging, wet environments, public places, and discomfort. Despite these issues, participants adhered to using the dosimeter with high compliance (89% of recording time). Our findings revealed a significant discrepancy between mean (300 lx<sub>mEDI</sub>) and median (51 lx<sub>mEDI</sub>) melanopic equivalent daylight illuminance. This discrepancy indicates that the participants were exposed to significantly lower light levels most of the time. Specifically, participants were exposed to light levels above 250 lx<sub>mEDI</sub> for only 14% of their wearing time. This highlights the need for increased exposure to recommended light levels. In the evening, participants were exposed to less than the recommended 10 lx<sub>mEDI</sub> for 58% of their wearing time, which is in line with the guidelines for reducing light exposure before sleep. This study highlights the urgent need for strategies to increase daily light exposure that are more in line with circadian health recommendations. |
| format | Article |
| id | doaj-art-9c74b01f905b49dd881748c01d5c3b4e |
| institution | OA Journals |
| issn | 2624-5175 |
| language | English |
| publishDate | 2024-10-01 |
| publisher | MDPI AG |
| record_format | Article |
| series | Clocks & Sleep |
| spelling | doaj-art-9c74b01f905b49dd881748c01d5c3b4e2025-08-20T02:00:37ZengMDPI AGClocks & Sleep2624-51752024-10-016461963410.3390/clockssleep6040042Wearable Light Loggers in Field Conditions: Corneal Light Characteristics, User Compliance, and AcceptanceOliver Stefani0Reto Marek1Jürg Schwarz2Sina Plate3Johannes Zauner4Björn Schrader5Lucerne School of Engineering and Architecture, Lucerne University of Applied Sciences and Arts, 6048 Horw, SwitzerlandLucerne School of Engineering and Architecture, Lucerne University of Applied Sciences and Arts, 6048 Horw, SwitzerlandLucerne School of Business, Lucerne University of Applied Sciences and Arts, 6002 Lucerne, SwitzerlandLucerne School of Engineering and Architecture, Lucerne University of Applied Sciences and Arts, 6048 Horw, SwitzerlandDepartment Health and Sport Sciences, Chronobiology & Health, TUM School of Medicine and Health, Technical University of Munich, 80992 Munich, GermanyLucerne School of Engineering and Architecture, Lucerne University of Applied Sciences and Arts, 6048 Horw, SwitzerlandUnderstanding user challenges with light dosimeters is crucial for designing more acceptable devices and advancing light exposure research. We systematically evaluated the usability and acceptability of a light dosimeter (lido) with 29 participants who wore the dosimeter near the corneal plane of the eye for 5 days. Common reasons for not wearing the dosimeter included exercise, recharging, wet environments, public places, and discomfort. Despite these issues, participants adhered to using the dosimeter with high compliance (89% of recording time). Our findings revealed a significant discrepancy between mean (300 lx<sub>mEDI</sub>) and median (51 lx<sub>mEDI</sub>) melanopic equivalent daylight illuminance. This discrepancy indicates that the participants were exposed to significantly lower light levels most of the time. Specifically, participants were exposed to light levels above 250 lx<sub>mEDI</sub> for only 14% of their wearing time. This highlights the need for increased exposure to recommended light levels. In the evening, participants were exposed to less than the recommended 10 lx<sub>mEDI</sub> for 58% of their wearing time, which is in line with the guidelines for reducing light exposure before sleep. This study highlights the urgent need for strategies to increase daily light exposure that are more in line with circadian health recommendations.https://www.mdpi.com/2624-5175/6/4/42light dosimetryusabilitydaytime light exposureevening light exposurewearable light loggerswearable technology |
| spellingShingle | Oliver Stefani Reto Marek Jürg Schwarz Sina Plate Johannes Zauner Björn Schrader Wearable Light Loggers in Field Conditions: Corneal Light Characteristics, User Compliance, and Acceptance Clocks & Sleep light dosimetry usability daytime light exposure evening light exposure wearable light loggers wearable technology |
| title | Wearable Light Loggers in Field Conditions: Corneal Light Characteristics, User Compliance, and Acceptance |
| title_full | Wearable Light Loggers in Field Conditions: Corneal Light Characteristics, User Compliance, and Acceptance |
| title_fullStr | Wearable Light Loggers in Field Conditions: Corneal Light Characteristics, User Compliance, and Acceptance |
| title_full_unstemmed | Wearable Light Loggers in Field Conditions: Corneal Light Characteristics, User Compliance, and Acceptance |
| title_short | Wearable Light Loggers in Field Conditions: Corneal Light Characteristics, User Compliance, and Acceptance |
| title_sort | wearable light loggers in field conditions corneal light characteristics user compliance and acceptance |
| topic | light dosimetry usability daytime light exposure evening light exposure wearable light loggers wearable technology |
| url | https://www.mdpi.com/2624-5175/6/4/42 |
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