A Pilot, Phase II, Observational, Case-Control, 1-Month Study on Asthenopia in Video Terminal Operators without Dry Eye: Contrast Sensitivity and Quality of Life before and after the Oral Consumption of a Fixed Combination of Zinc, L-Carnitine, Extract of Elderberry, Currant and Extract of Eleutherococcus.
- 2021-12-13
- Observational · n = 30
- Nutrients 13(12)
- Gemma Caterina Maria Rossi
- Luigia Scudeller
- Federica Bettio
- Giovanni Milano
- PubMed: 34960000
- DOI: 10.3390/nu13124449
- High evidence
- Rigorous Journal
- Adults
the computer vision symptom scale (CVSS) questionnaire score decreased by -14.1 ± 3, 1 (p = 0.000)
- Effect
- Beneficial
- Effect size
- Large
- Significant
- Yes