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Amblyopia clinical trials

The registry lists 189 studies for Amblyopia across more than 10 countries. 41 are recruiting or about to start. 175 of them are mainly about Amblyopia (how this is decided). Per ClinicalTrials.gov, last updated 2026-11-06.

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Status

Completed
91
Recruiting
30
Status unknown
22
Terminated
13
Withdrawn
11
Not yet recruiting
10

Phase

Phase 3
20
Phase 1
11
Phase 2
10
Phase 4
2

Where

United States
82
China
19
United Kingdom
11
Egypt
8
Canada
6
Spain
5

Who runs them

Jaeb Center for Health Research (24) · Alaska Blind Child Discovery (6) · Retina Foundation of the Southwest (6) · Shahid Beheshti University of Medical Sciences (5) · Boston Children's Hospital (5) · National Eye Institute (NEI) (5) · Rebiscan, Inc. (5) · Universitat Politècnica de Catalunya (4)

What is being tested here

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

DrugOpenPhase 3All
Valproic Acid101
Atropine056
Levodopa012
Carbidopa012
Donepezil001
Docosahexaenoic Acids001
Caffeine001

Coming up

3phase 3 studies under way
14studies 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.

The 10 nearest

Who these studies take

Of the 30 Amblyopia studies recruiting now, 4 (13%) set no upper age limit and 24 (80%) stop at 75 or younger. 25 (83%) take children under 18. 0 (0%) are for women only and 0 (0%) for men only; 7 (23%) take healthy volunteers.

Recruiting studies that take each age, of 30
AgeWomenMen
1021 (70%)21 (70%)
1814 (47%)14 (47%)
3013 (43%)13 (43%)
4011 (37%)11 (37%)
509 (30%)9 (30%)
657 (23%)7 (23%)
756 (20%)6 (20%)
856 (20%)6 (20%)

Across all 189 studies, recruiting or not: 86% stop at 75 or younger and 85% at 65; 87% take children; 0% are for women only and 0% for men only; 27% take healthy volunteers. From each study’s registry entry; the criteria on its page decide.

How long Amblyopia studies take

Of 71 interventional studies with no phase under Amblyopia, half reached primary completion within 33 months of starting, counting those still running.

Start to primary completionEvery sponsorIndustryNon-industry
Interventional, no phase33 mo17–47 · 71 studies—34 mo21–72 · 58 studies
Observational10 mo3–22 · 16 studies——

Each figure is the month by which half the studies had reached primary completion, with the range in which the middle half did. Studies still running count until their last registry update; studies that stopped early are left out. Phase 1 includes early phase 1; observational means prospective or not stated, as retrospective and cross-sectional studies date a window of data rather than a study. How these figures are worked out

What changed recently

From the registry's own updates since Oct 11, 2026.

Stopped2

Newly registered1

Studies

Recruiting first, then most recently updated. Showing 50 of 189. Browse all 189 → or search them.