About the Retina
Retina is a layer of nerve tissue that senses the light coming into the eye and communicates this information to the brain.The front part of the eye consisting of cornea and the lens focuses light onto the retina. Acting like a film in a camera, the retina captures the light and transmits it to brain where the light is processed into recognizable images
Vitreous is a gelatin like substance that fills the eye between the lens and the retina. It is densely adherent to a circular area adjacent to the lens called vitreous base. It is very lightly adhered to retinal blood vessels and to area around the macula on retina and the optic nerve head. Vitreous is like solid Jell-O at the time of birth and slowly degenerates with age becoming more liquid. Vitreous acts as a reservoir for certain nutrients and oxygen for retina but a definite role is not known at this time. As this transformation happens, the vitreous can separate from the back of the eye in a condition called Posterior Vitreous Detachment or PVD. This usually presents as flashing lights or floaters. This can be accompanied by formation of retinal tears or development of retinal detachment. Thus it is very important for anyone developing symptoms of flashing lights or floaters get a comprehensive eye exam by an eye specialist.
Macula is central part of the retina that affords us the finest vision. The center of this area called the fovea is the area that allows us 20/20 vision.