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To refer or not to refer for EDT’s?. Dr Peter Good Consultant Clinical Scientist. Why refer for EDT’s?. Unexplained visual loss Hereditary retinal dystrophy Nystagmus Visual Function in paediatrics Opaque Media Trauma Drug Toxicity. Indications for EDT tests. Unexplained visual loss.
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To refer or not to refer for EDT’s? Dr Peter Good Consultant Clinical Scientist
Why refer for EDT’s? • Unexplained visual loss • Hereditary retinal dystrophy • Nystagmus • Visual Function in paediatrics • Opaque Media • Trauma • Drug Toxicity
Hereditary Retinal Dystrophy Please don’t ask for paediatric EDT’s when macular developed
Trauma • Retinal or Optic Nerve Trauma?
When not to request EDT’s Choroidal, Macular off Retinal Detachments Cataract without RAPD Before MRI/CT Acute Optic Neuritis (VA < 6/36), unless Functional EDT’s in young children where family history of heredo-macular dystrophy If VA > 6/9 in occlusion therapy
How to request? • By referral letter to • Dr Peter Good • Consultant Clinical Scientist • Visual Function request card • Clinically urgent EDT’S to be discussed with Dr Good • Do not routinely fax letters to us!
We don’t have a crystal ball! • Please give all patient details • Summary of ophthalmic findings • Which is the affected eye • Inform patient why they are attending