Overview Clinical Trial of Lutein for Patients With Retinitis Pigmentosa Receiving Vitamin A Status: Completed Trial end date: 2008-12-01 Target enrollment: Participant gender: Summary The purpose of this trial is to determine whether lutein in addition to vitamin A will slow the course of retinitis pigmentosa. Phase: Phase 3 Details Lead Sponsor: National Eye Institute (NEI)Treatments: Retinol palmitateVitamin AVitamin DVitamins