Transcript Nystagmus

Cone-Rod Dystrophy: a rare disorder of the eye that is usually, but
not always, inherited. The cells that receive light stimuli (cone cells and rod cells) in
the retina of the eye deteriorate causing impaired vision. This disorder normally
occurs between 10 to 30 years of age.
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Forms of the Disease
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Juvenile and Adult Onset: Most common
symptoms are vision loss, sensitivity to
bright lights causing Nyctalopia (night
blindness), poor color vision, and loss of
peripheral visual fields.
Because Dystrophy is hereditary and can
be asymptomatic early on, patients with
positive family histories can be detected
initially using an electroretinography ( an
instrument that measures the electrical
responses of various cell types in the
retina), this remains the best test along
with fluorescent angiography, and color
vision test. They are all important tools in
diagnosing Cone-Rod Dystrophy.
•
Treatments and Modifications:
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As of 2001, there are no known
treatments or cures for cone-rod
dystrophy. It has been suggested, however,
that people with cone-rod dystrophy may
be able to slow the progression of their
blindness by wearing sunglasses and
avoiding bright lights.
Electroretinography test
Cone-Rod Dystrophy
• Developed by Emily Diaz
– References
Wikipedia. (2010, April 3).Cone Dystrophy. Retrieved July 5, 2010, from
http://en.wikipedia.org/wiki.conedystrophy
Eye Conditions and Other Retinal Diseases. (2004-2010). Cone-Rod Dysrophy. Retrieved July 5, 2010,
from http://www.blindness.org/index.php?view=article&catid=38%3Aother-retnal-diseases&id=...
Selected Anomalies and Diseases of the Eye. (1990). Cone-Rod Dystrophy. Retrieved July 5, 2010, from
http://www.tsbvi.edu/education/anomalies/nystagmus. htm
University of Edinburg. (n.d.). SSC Scottish Sensory CentreRod-Cone Dystrophy. Retrieved July 5, 2010,
from http://www.ssc.education.ed.ac.uk/resources/vi&multi/eyeconds/RcDyst/html
American Academy of Ophthalmology: Berkley. (2006). High Resolution Retinal Imaging of Cone –Rod
Dystophy. Retrieved July 5, 2010, from
http://www.berkely.edu/imagingofroordalab/pubs/wolfing.pdf