# Blue Blockers at Night and Insomnia Symptoms

> **NCT02698800** · NA · COMPLETED · sponsor: **Columbia University** · enrollment: 15 (actual)

## Conditions studied

- Insomnia
- Sleep

## Interventions

- **DEVICE:** Blue blocking (BB) lenses
- **DEVICE:** Clear lenses

## Key facts

- **NCT ID:** NCT02698800
- **Lead sponsor:** Columbia University
- **Sponsor class:** OTHER
- **Phase:** NA
- **Study type:** INTERVENTIONAL
- **Status:** COMPLETED
- **Start date:** 2016-03
- **Primary completion:** 2017-03
- **Final completion:** 2017-03
- **Target enrollment:** 15 (ACTUAL)
- **Last updated:** 2019-07-30


## Primary source

ClinicalTrials.gov registry: https://clinicaltrials.gov/study/NCT02698800

## Citation

> US National Library of Medicine, ClinicalTrials.gov registration NCT02698800, "Blue Blockers at Night and Insomnia Symptoms". Retrieved via AI Analytics 2026-07-19 from https://api.ai-analytics.org/clinical/NCT02698800. Licensed CC0.

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