cORNEA

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CORNEA

Clinical Features A corneal lesion from any cause results in :- pain, photophobia and a red eye
- Vision may be reduced
Examination
- Inspection using magnification may reveal corneal opacities, a corneal foreign body, Dendritic ulcer ; a corneal ulcer stained fluorescein ; corneal abrasion or erosion ; corneal abrasion stained ; corneal Scar (alkali)

- Inspection after staining with fluorescein will demonstrate any epithelial defect.

Lesions include:

Herpetic Keratitis (Dendritic Ulcer): Herpes simplex infection results in a branching ulcer Dendritic ulcer     herpetic-dendritic-ulcer                     Dendritic Ulcer stained
Therapy
– Oc Acyclovir
Complications - recurrence
- corneal scarring
- iritis and deep keratitis
NOTE: Corticosteroids are contra indicated for they cause rapid progression and can lead to corneal perforation.

Corneal Abrasion: A geographic area of epithelial loss.                                                                                      Corneal abrasion

Therapy: – occlusion with a firm pad results in rapid resolution

Corneal Foreign Body: Corneal FB Will be noted on inspection or following fluorescein stain             CORNEAL fb

Therapy: – Amethocaine drop for anaesthesia and removal with a fine hypodermic needle
- Occlude until ulcer has healed

Viral Keratoconjunctivitis: Associated with the conjunctivitis may be a punctate keratitis with subepithelial infiltrates