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Electro-oculogram

(A) Placement of electrodes for EOG recording. (B) Normal EOG recording. An electro-oculogram measures: (1) voltage potential between cornea and Bruch membrane and (2) voltage potential changes with illumination. Arden ratio, light peak: dark trough (nl >1.8). Abnormality suggests diseases that primarily affect the retinal pigment epithelium. (Contributed by Dr. James Walters.)

Associated Disorders

  • Bassen-Kornzweig disease
  • Cushing syndrome
  • Kearns-Sayre syndrome
  • Lawrence-Moon-Biedl syndrome
  • Mitochondrial encephalopathy with lactic acidosis and stroke-like episodes (MELAS)
  • Ocular paraneoplastic syndromes
  • Refsum disease
  • Usher syndrome
  • gastroesophageal reflux disease
  • posterior vitreous detachment
  • retinal detachment
  • systemic arterial hypertension
  • systemic lupus erythematosus