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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
What is Vitreous?
Vitreous is a gelatin like substance that fills the eye between the
lens and the retina. It is densely adhered 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 when we
are born and slowly becomes like water as we get older.
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.
What is Macula?
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.
