Macular scarring is formation of the
fibrous tissue
Connective tissue is one of the four primary types of animal tissue, a group of cells that are similar in structure, along with epithelial tissue, muscle tissue, and nervous tissue. It develops mostly from the mesenchyme, derived from the mesode ...
in place of the normal
retina
The retina (; or retinas) is the innermost, photosensitivity, light-sensitive layer of tissue (biology), tissue of the eye of most vertebrates and some Mollusca, molluscs. The optics of the eye create a focus (optics), focused two-dimensional ...
l tissue on the
macular area of the retina which provides the sharpest vision in the eyes. It is usually a result of an
inflammatory or
infectious
infection is the invasion of tissues by pathogens, their multiplication, and the reaction of host tissues to the infectious agent and the toxins they produce. An infectious disease, also known as a transmissible disease or communicable dise ...
process. Other etiologies include
macular pucker
Epiretinal membrane or macular pucker is a disease of the eye in response to changes in the vitreous humor or more rarely, diabetes. Sometimes, as a result of immune system response to protect the retina, cells converge in the macular area as t ...
(macular detachment),
macular hole
A macular hole is a small break in the macula, located in the center of the eye's light-sensitive tissue called the retina.
Symptoms
If the vitreous is firmly attached to the retina when it pulls away, it can tear the retina and create a macula ...
, and age-related
macular degeneration
Macular degeneration, also known as age-related macular degeneration (AMD or ARMD), is a medical condition which may result in blurred vision, blurred or vision loss, no vision in the center of the visual field. Early on there are often no sym ...
.
Macular dystrophies and
telangiectasia
Telangiectasias (), also known as spider veins, are small dilated blood vessels that can occur near the surface of the skin or mucous membranes, measuring between 0.5 and 1 millimeter in diameter. These dilated blood vessels can develop anywhere ...
are among the less common causes.
References
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Disorders of choroid and retina
Scarring