Retina forms the inside lining of the back of the eye. Its composed of light sensitive neurons. Retina processes the light emitted from the objects and transmits to the brain for us to get the perceptual awareness of the images. Retina mainly comprises of blood vessels and neurons. It’s highly oxygen sensitive. The central portion of retina is macula, where maximum vision is restored. Retinal damage results in permanent vision loss as it lacks power of regeneration.
Vitreous humour is a transparent, colourless, gelatinous mass that fills the space between lens and retina. Vitreous has firm jelly like consistency. Vitreous is attached to retina. As age advances vitreous shrinks and gets detached from retina. This is called PVD (posterior vitreous detachment).This may be associated with floaters.