{{tag>ddx ERG}} 
====== Electronegative ERG ======

==== Possible Causes ====

  * CSNB (Oguchi’s)
  * CRVO / acute CRAO
  * Juvenile X-linked retinoschisis
  * Siderosis
  * Myotonic dystrophy
  * Duschenne muscular dystrophy
  * Batten’s disease
  * Quinine toxicity / methanol toxicity
  * MAR (melanoma-associated retinopathy / CAR (cancer-associated retinopathy)
  * Retinoschisis