[8] Apolipoprotein A1 (APOA1) and retinol-binding protein (RBP4) have recently been discovered to be more significantly expressed in retinal degenerative diseases and retinal detachment [9]; such overexpression indicates the massive damage of the barriers of the retina and so a dysfunction and damage of retina is developed. The gene discussed is APOA1; the disease is retinal detachment.