34. Corneal dystrophies

Question 1

what is corneal dystrophy ?

Answer 1

accumulation of abnormal material in the five corneal layers

Question 2

what is the symptoms of corneal dystrophy ?

Answer 2

blurred/ complete loss of vision 
diplopia 
foriegn body sensation 
photophobia
pain

Question 3

what are the anterior corneal dystrophy ?

Answer 3

corneal epithelium

corneal epithelium basement membrane

bowmans layer

epithelial basement dystrophy - micro cysts form

lisch corneal dystrophy - clusters of multiple cysts

reis buckler - scaring of membrane

Question 4

what are the stromal corneal dystrophy ?

Answer 4

gelatinous drop like dystrophy - amyloid accumulation
opaque cornea

granular corneal dystrophy type 1 and 2

lattice corneal dystrophy 1 and 2
branching line lesion like cracked glass

Question 5

what are the posterior corneal dystrophy ?

Answer 5

descement membrane and endothelium affected

fuchs endothelial corneal dystrophy

schynder crystaline corneal dystropy
opaque cornea due to accumilation of fat or cholesterol