CNR1 and retinal degeneration: Opposite to our results, using a model of retinal degeneration induced by intraperitoneal administration of N-methyl-N-nitrosourea (NMU), the treatment with SR141716A (Rimonabant), a CB1 antagonist, induced the survival of photoreceptors, lowered the levels of glial reactivity and decreased vascular anomalies (57).