NCT05005624

Validation of an Activities-of-daily-living Framework at Different Light Conditions

Validation of an Activities-of-daily-living Framework at Different Combinations of Light Temperature and Light Intensity

• Status: Completed
• Phase: —
• Study type: Observational
• Enrollment: 60 (actual)
• Sponsor: Democritus University of Thrace · Academic / Other
• Sex: All
• Age: 40 Years – 75 Years
• Healthy volunteers: Accepted

Summary

Primary objective of this study is the construction and validation of an experimental environment for the simulation of a variety of near- and intermediate-vision activities of daily living (ADLs) in different combinations of light temperature and light intensity.

Detailed description

Among the objectives of the study is to validate a framework of ADLs that require near and intermediate vision and better reflect visual capacity, in a special experimental environment of 9 different combinations of light temperature and light intensity. The final list consists of the following ten basic ADL tasks: 1\. Phone Book Search (PBS), 2. Supermarket receipt (SupRe), 3. Book reading (BR), 4. Cellular message (CM), 5. Cellular entry search (CES), 6. Reading computer screen (RCS), 7. Drops bottle reading (DR), 8. Subtitles reading (SubRe), 9. Open door test (ODT), and, 10. Screwdriver test (ST). The 9 light combinations are the following: 3000 K - 25 fc, 3000 K - 50 fc, 3000 K - 75 fc 4000 K - 25 fc, 4000 K - 50 fc, 4000 K - 75 fc 6000 K - 25 fc, 6000 K - 50 fc, 6000 K - 75 fc

Conditions

• Presbyopia
• Near Vision
• Reading
• Daily Activities

Interventions

Type	Name	Description
OTHER	ADL performance	All validation groups address the following ten ADL tasks in 9 different combinations of light temperature (in Kelvins - K) and light intensity (in foot candles - fc) in order possible differences to be revealed among the validation groups and light combinations: 1\. Phone Book Search (PBS), 2. Supermarket receipt (SupRe), 3. Book reading (BR), 4. Cellular message (CM), 5. Cellular entry search (CES), 6. Reading computer screen (RCS), 7. Drops bottle reading (DR), 8. Subtitles reading (SubRe), 9. Open door test (ODT), and, 10. Screwdriver test (ST). The 9 light combinations are the following: 3000 K - 25 fc, 3000 K - 50 fc, 3000 K - 75 fc 4000 K - 25 fc, 4000 K - 50 fc, 4000 K - 75 fc 6000 K - 25 fc, 6000 K - 50 fc, 6000 K - 75 fc

Timeline

• Start date: 2020-07-01
• Primary completion: 2020-12-23
• Completion: 2021-06-30
• First posted: 2021-08-13
• Last updated: 2022-05-04

Locations

1 site across 1 country: Greece