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OCS-01

Phase 3

Inflammation Eye Pain | Small molecule | Ophthalmology |Oculis Holding AG|Last Updated: Jul 10, 2025

Success Probability

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Market & Valuation

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Trial Design

UNCONTROLLED
Total Trials1
Total Enrollment241

FDA Designations

No designations recorded

Clinical trial landscape

OCS-01 · 2 trials · 4 indications

Phase 3 1Phase 2 1
NCT05147233A Phase 3 Study Evaluating the Efficacy and Safety of OCS-01 Eyedrops Compared to Vehicle for the Treatment of Ocular Inflammation and Pain Following Cataract SurgeryInflammation Eye Pain
COMPLETED241 Analytics
PHASE3COMPLETED
A Phase 3 Study Evaluating the Efficacy and Safety of OCS-01 Eyedrops Compared to Vehicle for the Treatment of Ocular Inflammation and Pain Following Cataract Surgery
Inflammation Eye PainUnlock trial analytics

Study Endpoints

Primary Endpoints

Central Subfield Thickness
Baseline to 12 weeks

Mean change in central subfield thickness (CST) on optical coherence tomography (OCT) at week 12 compared to baseline.

Visual Acuity
Baseline to 12 weeks

Mean change in early treatment of diabetic retinopathy study (ETDRS) best corrected visual acuity (BCVA) letter score at week 12

Secondary Endpoints

Change in visual acuity
Baseline to 24 weeks
Central Subfield Thickness
Baseline to week 24
Visual function and quality of life
Baseline, week 12 and week 24
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Study Design & Arms

Treatment Arms

ArmTypeDescription
High Dose UME - 6 drops OCS-01EXPERIMENTALFrom baseline until week 4 all participants will receive 01 drop of OCS-01, six times a day. At week 4, participants randomized to the high dose group will continue to receive 01 drop of OCS-01 six times a day until the primary end point at week 12. Starting week 12 the treatment will be administered based on the retreatment criteria until the end of study at week 24.
Low Dose UME 3 drops OCS-01 and 3 drops PlaceboEXPERIMENTALFrom baseline until week 4 all participants will receive 01 drop of OCS-01, six times a day. At week 4, the participants randomized to low dose group will receive 01 drop of OCS-01 three times a day and 01 drop of placebo three times a day,( total 6 drops each day) until the primary end point at week 12. Starting week 12 the treatment will be administered based on the retreatment criteria until the end of study at week 24.
High dose PSME - 6 drops of OCS-01EXPERIMENTALFrom baseline until week 4 all participants will receive 01 drop of OCS-01, six times a day. At week 4, participants randomized to the high dose group will continue to receive 01 drop of OCS-01 six times a day until the primary end point at week 12. Starting week 12 the treatment will be administered based on the retreatment criteria until the end of study at week 24.
Low dose PSME - 3 drops of OCS-01 and 3 drops of PlaceboEXPERIMENTALFrom baseline until week 4 all participants will receive 01 drop of OCS-01, six times a day. At week 4, the participants randomized to low dose group will receive 01 drop of OCS-01 three times a day and 01 drop of placebo three times a day, (total 6 drops each day) until the primary end point at week 12. Starting week 12 the treatment will be administered based on the retreatment criteria until the end of study at week 24.

Interventions

NameTypeDescription
OCS-01DRUGDexamethasone ophthalmic suspension, 1.5%
VehicleDRUGVehicle
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Eligibility Criteria

Age Range18 Years to N/A
SexALL

Inclusion Criteria: 1. Age 18 years or older. 2. Diagnosis of Uveitic macular edema (UME) or post-surgical macular edema (PSME). 3. Can provide written informed consent prior to any study procedure being performed, able and willing to follow all instructions, and attend all study visits. 4. UME of ...

Countries:United States
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Frequently asked questions about OCS-01

What is OCS-01 used for?

OCS-01 is an investigational small molecule being developed for ophthalmology indications, specifically for ocular inflammation and eye pain following cataract surgery, and for uveitis related cystoid macular edema. It is formulated as an eyedrop and is currently in clinical development.

Who makes OCS-01?

OCS-01 is being developed by Oculis Holding AG, a biopharmaceutical company traded under the ticker OCS. The company is advancing the drug through clinical trials for ophthalmology indications.

What phase is OCS-01 in?

OCS-01 is in Phase 3 clinical development. A Phase 3 study for ocular inflammation and pain following cataract surgery has been completed, and a Phase 2 study for uveitis related cystoid macular edema is active but not recruiting. It is not yet approved.

What clinical trials is OCS-01 in?

OCS-01 has been studied in NCT05147233, a completed Phase 3 trial for ocular inflammation and pain after cataract surgery with 241 participants, and NCT05608837, an active Phase 2 trial for uveitis related and post surgical macular edema with 28 participants in the United States.

How does OCS-01 work?

OCS-01 is a small molecule eyedrop designed to treat ocular inflammation and pain. Its specific molecular target has not been disclosed, so its mechanism of action is not detailed here.