Corneal Dystrophies Presenting as Recurrent Erosions

 Lattice corneal dystrophy type 1. Image from  Wikipedia .

Lattice corneal dystrophy type 1. Image from Wikipedia.

Corneal dystrophies are clinically fairly rare (with notable exceptions) but have pretty easily identifiable appearances.  Because we have learned quite a bit about the genetics, inheritance, etc. about many of the dystrophies, this seemed to be a pretty popular topic on tests – though it seemed like in the past few years the number of questions on corneal dystrophies decreased quite a bit.  I don’t know the minds of the test-writers, so who knows if it was a random thing, or if there was more emphasis on clinically significant questions.

In any case, recurrent corneal erosions/abrasions are fairly common.  While we typically consider trauma as one of the common causes, epithelial/anterior basement membrane dystrophy (EBMD/ABMD, map-dot-fingerprint dystrophy) is also a common cause of recurrent corneal erosions.  To help me remember the various corneal dystrophies that cause recurrent erosions, I came up with a mnemonic:  “Grass Erodes My Little Red Truck”:

  • Granular (rarer)
  • EBMD (map-dot-fingerprint)
  • Meesmann / Macular (rare)
  • Lattice (common)
  • Reis-Buckler
  • Thiel-Behnke

Do you have a different or better way to remember corneal dystrophies that cause recurrent erosions?  Leave a comment or contact us!