CD4 and Schnyder corneal dystrophy: They reported 8 of 18 (44%) SCD cases were long-term non-progressors (LTNP, asymptomatic with low viral loads and CD4>500/mm without ART for at least 10 years) compared to 5 of 36 (13.9%) LTNP in controls, with an average follow up of 10 years (p = 0.0193).