ret·i·na 
/ˈrɛtənə/ noun
plural ret·i·nas /ˈrɛtənə/ noun [count] : the sensitive tissue at the back of the eye that receives images and sends signals to the brain about what is seen
— ret·i·nal /ˈrɛtənəl/ adjective, technical
▪ the retinal image ▪ a retinal detachment
/ˈrɛtənəl/ adjective, technical ▪ the retinal image ▪ a retinal detachment
