Photophobia clinical trials

The registry lists 43 studies for Photophobia across more than 10 countries. 13 are recruiting or about to start. 8 of them are mainly about Photophobia (how this is decided). Per ClinicalTrials.gov, last updated 2026-10-27.

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Status

Completed: 19
Recruiting: 10
Terminated: 5
Not yet recruiting: 3
Withdrawn: 3
Status unknown: 2

Phase

Phase 3: 8
Phase 2: 5
Phase 1: 2
Phase 4: 1

Where

United States: 29
Spain: 4
France: 4
United Kingdom: 3
Germany: 3
Canada: 3

Who runs them

Pfizer (8) · Ohio State University (2) · University of Utah (2) · Arizona State University (2) · University of Michigan (1) · Bradley Katz (1) · VA Office of Research and Development (1) · Northumbria University (1)

What is being tested here

Drugs under test in Photophobia studies, those with the most open studies first. Medicines only given beside them are not counted. How drugs are counted

Drug	Open	Phase 3	All
Rimegepant	3	3	4
Lithium Carbonate	1	0	1
Zavegepant	0	3	3
Atropine	0	0	1
Nitisinone	0	0	1
Erenumab	0	1	1

Drug classes tested here CGRP receptor antagonists 3 open

Coming up

3phase 3 studies under way

4studies finish main data collection within a year

Studies recruiting or running, from their records. “Main data collection” ends at the primary completion date, the sponsor’s own estimate, which often moves.

All 4

Nov 2026Pilot Study of Neurofeedback for Photosensitivity in Mild Traumatic Brain Injury · VA Office of Research and Development
Dec 2026Effect of Fixation Training With Colored Light Targets on Traumatic Brain Injury-Associated Photophobia · Ohio State University
Dec 2026Use of Tinted Contact Lenses for Concussion-Related Light Sensitivity · University of Alabama at Birmingham
Mar 2027Light Exposure, Migraine Outcomes, and Sleep Quality · Arizona State University

Who these studies take

Of the 10 Photophobia studies recruiting now, 2 (20%) set no upper age limit and 6 (60%) stop at 75 or younger. 3 (30%) take children under 18. 0 (0%) are for women only and 0 (0%) for men only; 3 (30%) take healthy volunteers.

Recruiting studies that take each age, of 10
Age	Women	Men
10	3 (30%)	3 (30%)
18	7 (70%)	7 (70%)
30	7 (70%)	7 (70%)
40	7 (70%)	7 (70%)
50	6 (60%)	6 (60%)
65	5 (50%)	5 (50%)
75	4 (40%)	4 (40%)
85	2 (20%)	2 (20%)

Across all 43 studies, recruiting or not: 40% stop at 75 or younger and 37% at 65; 21% take children; 0% are for women only and 0% for men only; 30% take healthy volunteers. From each study’s registry entry; the criteria on its page decide.

What changed recently

From the registry's own updates since Oct 13, 2026.

Newly registered1

Impact of Optimized White Light on Visual Discomfort, Headache Intensity, and Cognitive Performance Among Those With MigraineOct 27, 2026NCT07898722

Studies

Recruiting first, then most recently updated. Showing 43 of 43. search them.