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Here is a quick mnemonic “OPTIC DISC to remember about Toxic Optic Neuropathy

This can be valuable for patients as well as medical doctors, nurses & students doing their clinical rounds. You can also find it very useful for med exams like USMLE, MBBS, NEET PG, FMGE, NExT, MCAT & NCLEX exams

Toxic Optic Neuropathy : How To Remember Easily ?

  • O – Optic disc swelling and cecocentral scotomas
  • P – Partial list of potential offending drugs or toxins: disulfiram, ethchlorvynol, chloramphenicol, amiodarone, monoclonal anti-CD3 antibody, ciprofloxacin, digitalis, streptomycin, lead, arsenic, thallium, d-penicillamine, isoniazid, emetine, and sulfonamides
  • T – Toxic optic neuropathy can cause gradual visual loss and optic atrophy
  • I – Implicated agents in toxic optic neuropathy, with weak evidence supporting the association
  • C – Cases reported from exposure to ethambutol, methyl alcohol, ethylene glycol, or carbon monoxide
  • D – Deficiency states induced by starvation, malabsorption, alcoholism, or gastric bypass
  • I – Insidious visual loss due to deficiency states
  • S – Similarly, Thiamine, vitamin B12, and folate levels should be checked in patients with unexplained bilateral central scotomas and optic pallor
  • C – Chromium, cobalt, and nickel metallosis from hip implant failure can rarely cause toxic optic neuropathy

Mnemonic : OPTIC DISC

Dr. Arin Nandi

Passionate About Medical Science & Helping Future Doctors Achieve Top Ranks In Medical Exams. He is professionally a dentist as well as a public health expert from JIPMER (1), (2)working in health department