Intravitreal Ranibizumab (Lucentis®) in the Treatment of Non-leaking Macular Cysts in Retinal Dystrophy

• Status: Completed
• Trial end date: 2019-08-29
• Target enrollment: 0
• Participant gender: All

Summary

To evaluate the efficacy and safety of intravitreal ranibizumab (IVR) injection in the treatment of non-leaking macular cysts in patients with retinal dystrophy.

Material and Methods:

Design - Prospective, nonrandomized, nonblinded, clinical trial. Participants - Patients >18 years diagnosed with retinal dystrophies and non-leaking macular cysts between Jan 2015 and July 2018 in 1 center.

Methods - Phase 1: Patients with best corrected visual acuity (BCVA) < 0.5 will receive carbonic anhydrase inhibitors (CAI) [oral acetazolamide 500mg/day or topical brinzolamide twice daily] and followed up for three months. Phase 2: Patients who do not show an adequate response with CAI will receive three 0.5mg IVR injection at monthly intervals.

Outcome - 1) Significant reduction (> 10%) of the central macular thickness (CMT), 2) Improvement (> 1 line) in BCVA 3) Presence of any complication.

• Phase: Phase 2
• Accepts Healthy Volunteers?: No

Details

• Lead Sponsor: Sultan Qaboos University
• Treatments: Carbonic Anhydrase Inhibitors; Ranibizumab

Criteria

Inclusion Criteria:

Omani patients over 18 year old, with retinal dystrophy and non-leaking macular cysts confirmed by fundus examination, electroretinography (ERG), optical coherence tomography (OCT), fundus fluorescein angiography (FFA) and genetic testing.

Included patients should also have the capacity and cooperation to undergo visual function assessment (i.e. best-corrected visual acuity (BCVA), color vision as well as the above-mentioned investigations.

Exclusion Criteria:

Patients with pseudo-retinitis pigmentosa, those with cystic macular lesions or progressive retinal disease due to any cause other than retinal dystrophy, and patients with reduced visual acuity due to media opacities (e.g. cataract). Patients with any contraindication or known allergy to brinzolamide, acetazolamide or anti-VEGF agents will not receive the respective drug, nor those who underwent intraocular surgery or injection within the last 1 month.