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Transcript
From: Chapter 1 - Restoring Vision to the Blind: The New Age of Implanted Visual Prostheses
Trans. Vis. Sci. Tech.. 2014;3(7):3. doi:10.1167/tvst.3.7.3
Figure Legend:
Overview of the visual system as related to visual prostheses. In most retinal dystrophies, the first order photoreceptor
neurons (rods and cones) are lost. Thus, second order neurons (bipolar cells) are the earliest viable target, typically for
subretinal and suprachoroidal devices. Epiretinal devices typically target retinal ganglion cells (RGCs), the third order
neurons that form the output of the retina. Likewise, optic nerve devices target these neurons either within the eye at the
nerve head or outside of the eye. The fourth order neurons, relay cells of the thalamic lateral geniculate nucleus (LGN)
are targeted with penetrating electrode arrays. Finally, cortical implants target the fifth and higher order neurons found in
the of
primary
visual
cortices. (ModifiedThe
from
Krey, H.F.,
Brauer, H.
(1998).
Chibret
Augenatlas:
Eine Repetition
Ärtze
Date
download:
5/5/2017
Association
for&Research
in Vision
and
Ophthalmology
Copyright
© 2017. Allfür
rights
reserved.
mit Zeigetafeln für Patienten. Munich: Chibret Med Serv.)