TY  - CHAP
M1  - Book, Section
TI  - Cornea
A1  - Al-Maskari, Ahmed
A1  - Larkin, Daniel F. P.
A2  - Riordan-Eva, Paul
A2  - Augsburger, James J.
PY  - 2017
T2  - Vaughan & Asbury's General Ophthalmology, 19e
AB  - Thorough  clinical  assessment  is  crucial  in  corneal  disease  as  diagnosis  is  feasible  in  most  cases  on  the  basis  of  history  and  clinical  examination.  A  history  of  trauma  or  contact  lens  wear  can  often  be  elicited,  with  foreign  bodies  and  abrasions  being  the  two  most  common  acute  corneal  abnormalities.  Identifying  any  past  or  family  history  of  corneal  disease  can  be  critical.  Herpes  simplex  infection  and  corneal  erosion  are  often  recurrent,  but  since  recurrent  erosion  is  extremely  painful  and  herpetic  keratitis  is  not,  they  can  be  differentiated  by  the  history.  Use  of  topical  medications,  including  nonprescription  preparations,  should  be  elicited.  Topical  corticosteroids  predispose  to  bacterial,  fungal,  and  viral  disease,  especially  herpes  simplex  keratitis.  Many  medications  and  preservatives  can  cause  contact  dermatitis  or  corneal  toxicity.  Toxicity  is  an  important  cause  of  corneal  and  conjunctival  disease.  The  keys  to  examination  of  the  cornea  are  adequate  illumination  and  magnification,  making  the  slitlamp  essential.  Examining  the  reflection  as  light  is  moved  carefully  over  the  entire  cornea  identifies  rough  areas  indicative  of  epithelial  defects.  Fluorescein  staining  highlights  superficial  epithelial  lesions  that  might  otherwise  not  be  apparent.  Examination,  particularly  after  trauma,  is  facilitated  by  instillation  of  a  local  anesthetic.  Further  methods  of  imaging  in  corneal  disease  are  listed  in  Table  6–1.  
SN  - 
PB  - McGraw-Hill Education
CY  - New York, NY
Y2  - 2024/04/19
UR  - accessmedicine.mhmedical.com/content.aspx?aid=1144467784
ER  -