RT Book, Section
A1 Yeung, Helen H.
A1 Walton, David S.
A2 Kline, Mark W.
SR Print(0)
ID 1182926983
T1 Anterior Segment Disorders
T2 Rudolph's Pediatrics, 23e
YR 2018
FD 2018
PB McGraw-Hill Education
PP New York, NY
SN 9781259588594
LK accesspediatrics.mhmedical.com/content.aspx?aid=1182926983
RD 2024/04/19
AB The  anterior  segment  of  the  eye  consists  of  the  cornea,  the  anterior  chamber,  the  iris,  the  pupil,  and  the  lens,  which  anatomically  divides  the  anterior  segment  of  the  eye  from  its  posterior  segment.  The  posterior  segment  includes  the  vitreous  gel,  the  retina,  the  optic  nerve,  and  the  choroid.  This  is  a  useful  clinical  division,  because  many  diseases  of  the  eye  predominantly  affect  the  anterior  or  posterior  segment  and  are  usefully  differentiated  from  conditions  (eg,  endophthalmitis)  that  affect  the  whole  eye.  Casual  inspection  of  the  eye  (the  globe)  is  inevitably  an  assessment  of  the  anterior  segment  structures  and  offers  very  little  information  about  the  internal,  more  posterior  ocular  structures.  A  checklist  of  anterior  segment  findings  that  may  be  recognized  by  the  pediatrician  would  include  cornea  size  and  transparency;  iris  color  (eg,  heterochromia);  pupil  size,  shape,  position,  and  reaction  to  light;  lens  clarity  (eg,  cataract)  and  position  (eg,  dislocation/subluxation);  and  signs  of  elevated  eye  pressure.