As part of the aging process,
at some point in our life, the vitreous will shrink and
separate from the back of the eye. The onset of the vitreous
separation is usually accompanied by symptoms of "flashes
and floaters".
Because the retina is an
extremely thin and fragile structure, if the vitreous
separation produces sufficient force, it can cause a break or
tear in the retinal surface. Fortunately, when the retina
tears, it usually does so in the far corners of the retina,
which therefore does not compromise the patient's vision.
However, retinal breaks or tears can over time (days to years)
begin to accumulate fluid underneath them, which can gradually
cause the retina itself to separate from the wall of the eye
with disastrous consequences on one's vision.
It is for this reason, that
patients who have symptoms of vitreous separation should be
evaluated for the presence of retinal tears. If retinal tears
are found, they are usually sealed (using laser
or cryotherapy) so as to
prevent retinal detachment from occurring.
Once retinal detachment occurs,
it is important for the patient to have the condition repaired
before the central part of the retina (macula) is itself
involved in the retinal detachment. Once the macula is
involved, the prognosis for good vision, even after successful
repair, is lessened. Methods of repair of retinal detachment
include:
The type of procedure
recommended depends on the characteristics of the retinal
detachment.