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23 Cards in this Set

  • Front
  • Back
5 layers of cornea
1. epithelium
2. bowmans layer
3. stroma
4. descement's membrane
5. endothelium
fluorescein stain
location of corneal lesion
(peripheral: indirect viral infection, no microorganisms present)
hypopyon- pus in anterior cavity
3 commonest bacterial ulceration of cornea
1. strep pneumonia
2. pseudomonas
3. staph aureus & epidermidis
fungal keratitis
-hx plant/ animal matter
-extremely red& inflammed
-*satellite lesions
-hypopion
- progress slowly
primary herpes simplex keratoconjunctivits
-children and young adults
-mild malaise
- *vesicular skin rash on eyelids
dendritic ulcer dt recurrent herpes simplex keratitis
enlarges= geographic ulcer
herpes simplex keratitis
reduced corneal sensation
complications of herpes simplex keratitis
1. disciform keratitis
2. stromal keratitis
disciform keratitis
-round, dull central area of corneal oedema dt immune response
Huchinson's sign
appearance of typical lesions at tip, side, root of nose
*strong prognostic indicator of ocular involvement of herpes zoster
herpes zoster ophalmicus
marginal infiltrates of cornea
whitish oval/ linear opacities adjacent to limbus
lead to ulceration/ vascularisation
phlyctenulosis
delayed hypersensitivity response to bacterial antigens
*TB
- staphylococcal antigens
vit A deficiency
XEROPHTHALMIA
- loss of mucus secreting goblet cells- dry eyes
- keratinisation- dull cornea
- softening, necrosis and perforation of cornea
- night blindness
tarsorrhaphy
surgical partial closure of eyelids
lagophthalmos
eyelids don't close completely
corneal flash burn (arc eye)
UV irradiation burn cornea
- welding without visor
- tanning without eye shields
arcus cornealis
haematocornea
- hyphaema stains cornea with Hb
ectatic corneal dystrophy
- myopia
- astigmatism
Munson's sign
- look down, conic shapr thrusts center of lower lid margin forwards