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Age related macular degeneration
is a degenerative condition of the macula
caused by the hardening of the arteries
that nourish the retina. This deprives the
sensitive retinal tissue of oxygen and nutrients
that it needs to function and thrive. As
a result the central vision deteriorates.
Diabetic Retinopathy
is the effect of diabetes on the eye. Over
time, diabetes affects the circulatory system
of the retina, causing the arteries to weaken
and leak forming small, dot-like haemorrhages.
These leaking vessels may lead to swelling
in the retina and if left untreated, blood
may leak into the retina and vitreous, causing
spots or floaters along with decreased vision.
In the later phases of the disease, continued
abnormal vessel growth and scar tissue may
cause serious problems such as retinal detachment
and glaucoma.
Retinal Detachment
occurs when the retinal sensory and pigment
layers separate. There are three types of
retinal
detachment. The most common type occurs
when there is a break in the sensory layer
of the retina, and fluid seeps
underneath, causing the layers of the retina
to separate. The second most common type
occurs when strands of
vitreous or scar tissue create traction
on the retina, pulling it loose. Patients
with diabetes are more likely to
experience this type. The third type happens
when fluid collects underneath the layers
of the retina, causing it to separate from
the back wall of the eye. This usually occurs
in conjunction with another disease affecting
the eye that causes swelling or bleeding.
Macular Hole is a problem
that affects the very central portion of
the retina. The vitreous gel inside the
eye is firmly attached to the macula. With
age, the vitreous becomes thinner and separates
from the retina. Sometimes this creates
traction on the macula, causing a hole to
form.
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