Intervention: Betamethasone
Trial phase: Phase 3
ATC code: A01AC02 | A07EA04 | C05AA05 | C05AA09 | D07AB19 | D07AC01 | D07BC01 | D07CB04 | D07CC01 | D07XB05 | D07XC01 | D10AA03 | H02AB01 | H02AB02 | R01AD03 | R01AD06 | R01AD53 | R03BA04 | S01BA01 | S01BA06 | S01BB04 | S01CA01 | S01CA05 | S01CB01 | S01CB04 | S02BA06 | S02BA07 | S02CA06 | S03BA01 | S03BA03 | S03CA01 | S03CA06
SMILES: CC1CC2C3CCC4=CC(=O)C=CC4(C)C3(F)C(O)CC2(C)C1(O)C(=O)CO
Sex: All
Age groups: Adult | Older Adult
Healthy volunteers: Accepts Healthy Volunteers
Participants at risk: 64
Group description: Dexamethasone intravitreal implant (Ozurdex) (0.7 mg) Initial injection at Week 0

Second injection permitted at Week 12 IF:

Eye does not meet the improvement definition (a 20% decrease in central subfield thickness of the macula) OR eye has a normal central subfield thickness but has cystoid spaces in the 1 mm central subfield OR ME is worse after initial improvement;
IOP of ≤21 or mm Hg and treatment with ≤3 IOP-lowering agents;

Dexamethasone intravitreal implant: • Standard preparation as described for intravitreal injections.
Eligibility criteria:
Inclusion Criteria:

Eye level inclusion criteria - at least one eye must meet all of the following conditions:

Non-infectious anterior, intermediate, posterior or panuveitis; either active or inactive uveitis is acceptable;
Macular edema (ME) defined as the presence of central subfield macular thickness greater than the normal range for the OCT machine being used, regardless of the presence of cysts, as assessed by study ophthalmologist;
Best corrected visual acuity (BCVA) 5/200 or better;
Baseline intraocular pressure > 5 mm Hg and ≤ 21 mm Hg (current use of 3 or fewer intraocular pressure-lowering medications and/or prior glaucoma surgery are acceptable);
Baseline fluorescein angiogram that is gradable for leakage in the central subfield
Pupillary dilation sufficient to allow OCT testing.

Exclusion Criteria:

Patient level exclusion criteria:

-History of infectious uveitis, or of scleritis, keratitis, or infectious endophthalmitis in either eye;

History of central serous retinopathy in either eye;

For women of childbearing potential: pregnancy, breastfeeding, or a positive pregnancy test; unwilling to practice an adequate birth control method (abstinence, combination barrier and spermicide, or hormonal) for duration of trial;
Use of oral acetazolamide or other systemic carbonic anhydrase inhibitor at baseline;
Oral prednisone dose > 10 mg per day (or of an alternative corticosteroid at a dose higher than that equipotent to prednisone 10 mg per day) OR oral prednisone dose ≤ 10 mg per day that has not been stable for at least 4 weeks(note that if patient is off of oral prednisone at baseline (P01 visit), dose stability requirement for past 4 weeks does not apply);
Systemic immunosuppressive drug therapy that has not been stable for at least 4 weeks;
Known allergy or hypersensitivity to any component of the study drugs;

Eye level exclusion criteria - at least one eye that meets all inclusion criteria cannot have any of the following conditions:

History of severe glaucoma as defined by optic nerve damage (cup/disc ratio of ≥ 0.9 or any notching of optic nerve to the rim);
Media opacity causing inability to assess fundus or perform OCT;
Presence of an epiretinal membrane noted clinically or by OCT that per the judgment of study ophthalmologist may be significant enough to limit improvement of ME (i.e., causing substantial wrinkling of the retinal surface)81;
Torn or ruptured posterior lens capsule;
Presence of silicone oil;
Periocular or intravitreal corticosteroid injection in past 8 weeks;
Injection of dexamethasone intravitreal implant in past 12 weeks;
Placement of fluocinolone acetonide implant (Retisert) in past 3 years;