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OCS-01

Phase 3

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

OCS-01 development status

Highest phase Phase 3
Registered trials 2 across 2 sponsors since Dec 2001

OCS-01 target and mechanism

Molecular targetdexamethasone
ModalitySmall molecule

Also known as dexamethasone ophthalmic suspension eye drops

Success Probability

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Market & Valuation

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Trial Design

UNCONTROLLED
Total Trials2
Total Enrollment269

FDA Designations

No designations recorded

OCS-01 clinical trials

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 ocular inflammation and eye pain following cataract surgery, as well as for uveitis related cystoid macular edema. It is formulated as an eyedrop and is currently in clinical development for these ophthalmology indications.

What does OCS-01 target?

OCS-01 targets dexamethasone, a corticosteroid receptor agonist. It is designed to deliver dexamethasone directly to the eye to reduce inflammation and pain. The drug is being evaluated for its efficacy and safety in treating postoperative ocular inflammation and uveitis related macular edema.

Who makes OCS-01?

OCS-01 is being developed by Oculis Holding AG, a biopharmaceutical company focused on ophthalmology. The company's stock is listed under the ticker symbol OCS. Oculis is advancing OCS-01 through clinical trials for multiple eye conditions.

What phase is OCS-01 in?

OCS-01 is in Phase 3 clinical development. A Phase 3 study evaluating the drug for ocular inflammation and pain following cataract surgery has been completed. Additionally, a Phase 2 study for uveitis related and post surgical macular edema is active but not recruiting participants.

What clinical trials is OCS-01 in?

OCS-01 has been studied in two clinical trials. NCT05147233 is a completed Phase 3 study with 241 participants evaluating the drug for ocular inflammation and pain after cataract surgery. NCT05608837 is an active Phase 2 study with 28 participants for uveitis related and postoperative cystoid macular edema.

Is OCS-01 FDA approved?

OCS-01 is not FDA approved. It is an investigational drug currently in clinical development. A Phase 3 trial for postoperative ocular inflammation and pain has been completed, and a Phase 2 trial for uveitis related macular edema is ongoing, but the drug has not yet received regulatory approval.