The Pulfrich phenomenon in optic disc drusen
- 1Department of Vision Sciences, Glasgow Caledonian University, Glasgow, UK
- 2Tennent Institute of Ophthalmology, Gartnavel General Hospital, Glasgow, UK
- Dr Gael Gordon, PhD, Department of Vision Sciences, Glasgow Caledonian University, Cowcaddens Road, Glasgow G4 0BA, UK; G.Gordon{at}gcal.ac.uk
- Accepted 2 June 2007
Optic disc drusen are hyaline bodies in the optic nerve head of unknown aetiology,1 which are present in approximately 2% of the population.2 Reduced visual acuity associated with optic disc drusen is rare, although visual field defects are common in cases of visible drusen.3 4 Although the condition is frequently bilateral, asymmetry is usual.5 We report a case of a patient with disabling visual symptoms associated with optic disc drusen. These were found to result from the Pulfrich phenomenon and were resolved by prescribing an appropriate ophthalmic tint.
Case report
A 20-year-old woman was seen in our optometry clinic and subsequently examined by a consultant ophthalmologist. She was moderately myopic, with good visual acuities (6/5 OU), no history of ocular disease and showed no symptoms …
