A 48 Week Study to Evaluate the Efficacy and Safety of Two (2) EYS606 Treatment Regimens in Subjects With Active Chronic Non-infectious Uveitis (CNIU)

Key Eligibility Criteria: 1. Subject must be 18 years of age or older. 2. Subject must have a diagnosis of chronic non-infectious uveitis of any anatomic subtype (anterior, intermediate, posterior or panuveitis). 3. Subject must have a history of chronic or recurrent non-infectious uveitis requiring or having required treatment with corticosteroids (systemic, periocular or intraocular) and/or systemic immunosuppressive medication(s) in the 12 months prior to the screening visit. 4. Best corrected visual acuity of * Study Part I: ≥ 5 and \< 67 ETDRS letters in the study eye (equivalent to less than or equal to 20/50 but better than or equal to 20/800 Snellen). * Study Part II: ≥ 5 and \< 77 ETDRS letters in the study eye (equivalent to less than or equal to 20/32 but better than or equal to 20/800 Snellen). 5. At the screening and baseline visits subject must have active chronic non-infectious uveitis as evidenced by at least one or more of the following in the study eye: * Active retinal vasculitis (retinal vascular leakage) involving the posterior pole confirmed by the reading center. * Vitreous haze grade ≥ 2+ (SUN classification). * Anterior chamber cell grade ≥ 2+ (SUN classification); anterior chamber cells must be present for subjects with a diagnosis of chronic anterior non-infectious uveitis. * Persistent macular edema (defined as central retinal thickness (CRT) \> 300 microns or \> 320 microns using Zeiss Cirrus and Topcon or Heidelberg Spectralis spectral domain ocular coherence tomography (SD-OCT) instruments, respectively) despite treatment with corticosteroids and/or immunosuppressive therapy for at least 4 weeks prior to screening. 6. Subject receiving concomitant topical and/or systemic corticosteroids or allowed systemic immunosuppressive medications must have maintained the same treatment regimen (dosage/frequency) for at least 2 weeks prior to the baseline (V1) visit, (if applicable).