RT Book, Section
A1 Ropper, Allan H.
A1 Samuels, Martin A.
A1 Klein, Joshua P.
A1 Prasad, Sashank
SR Print(0)
ID 1201365823
T1 Disturbances of Vision
T2 Adams and Victor's Principles of Neurology, 12e
YR 2023
FD 2023
PB McGraw-Hill Education
PP New York, NY
SN 9781264264520
LK neurology.mhmedical.com/content.aspx?aid=1201365823
RD 2024/04/20
AB The  importance  of  the  visual  system  is  reflected  by  the  magnitude  of  its  representation  in  the  central  nervous  system.  A  large  part  of  the  cerebrum  is  committed  to  vision,  including  the  perception  of  the  form  and  color  of  objects,  the  perception  of  spatial  relationships  and  motion,  and  the  control  of  movements  under  visual  guidance.  The  optic  nerve,  which  is  a  tract  of  the  central  nervous  system,  contains  more  than  a  million  fibers  (compared  to  50,000  in  the  auditory  nerve).  The  visual  system  also  has  special  significance  in  that  study  of  this  system  has  greatly  advanced  our  knowledge  of  the  organization  of  all  sensory  neuronal  systems  as  well  as  the  relationships  between  perception  and  conscious  awareness.  Indeed,  we  know  more  about  neural  underpinnings  of  vision  than  we  do  about  any  other  sensory  function.  Furthermore,  the  eyes,  because  of  their  diverse  composition  of  epithelial,  vascular,  neural,  and  pigmentary  tissues,  are  virtually  a  medical  microcosm,  susceptible  to  many  diseases,  and  their  tissues  are  available  for  inspection  through  a  transparent  medium.