ELECTRODIAGNOSIS IN ESSENDON

Patients have access to the latest electrodiagnostic technology at Essendon Eye Clinic. The clinic is equipped to offer comprehensive assessment of the visual pathway in accordance with international Standards and Guidelines (ISCEV). Essendon Retina electrodiagnostic service welcomes referrals from GPs, ophthalmologists, neurologists and optometrists. Tests are chosen and conducted in line with the patient’s presenting symptoms or according to the referring practitioner’s requests. Often our electrodiagnostic work-ups include additional measures of visual function eg. assessment of colour perception, contrast sensitivity, dark adaptometry or perimetry. The service is complemented by a suite of advanced imaging techniques, particularly to assist in monitoring chronic or progressive eye diseases. 

Indications

Electrodiagnostic testing is indicated for those patients who present with:

  • unexplained low visual acuity
  • nyctalopia
  • difficulty adapting to ambient lighting
  • photophobia
  • photopsia
  •  acquired colour vision anomalies

Diagnosis & Monitoring

The electrodiagnostic service receives referrals for diagnosing and monitoring those with:

  • retinal disorders (eg dystrophies such as RP, X-linked retinoschisis)
  • retinal toxicities (eg Plaquenil)
  • neuropathies or neurodegenerations

Current protocols mean that dysfunction of the retinal neurons can be detected with excellent sensitivity, even before visible structural, vascular or pigmentary changes in the eye. An electrodiagnostic work-up will provide evidence of a neuralexplanation to vision loss – this will not be apparent on fundoscopy. 

Different types of electroretinogram (flash, pattern and multifocal; also electrooculogram, EOG) are used to examine the health of retinal neurons.  Whereas the pattern ERG is a sensitive indicator of early glaucoma, the multifocal ERG is useful for localising macular dysfunction, toxicity or oedema. The visual evoked potential (VEP) measures the size and timing of responses passed through to the visual cortex, providing information about neurological disorders (eg optic neuritis, neurodegenerations, chiasmic lesions, albinism). 

Even for patients who have conditions for which there is no treatment, understanding the extent and nature of their visual loss along with its rate of progression can assist practitioners to give appropriate and more personal advice. Some patients also choose to pursue genetic testing and family counselling for inherited disorders. These services can be arranged through our clinic.

COLOUR VISION & VISUAL FUNCTION

            Pseudoisochromatic screening plates: Ishihara & HRR

            Panel discrimination tests: Farnsworth D15 & l’Anthony’s Desaturated 

            Heidelberg Anomaloscope 

            Farnsworth Lantern

 We offer colour vision testing for inherited or acquired disorders. Occupational diagnostic testing is available for those applying for:

  • CASA licences
  • Australian Defence Force
  • Victoria Police
  • Australian Federal Police
  • Metropolitan Fire Brigade
  • Country Fire Authority
  • Electrician Licensing

Diagnosis, counselling and career advice are available for school children with inherited colour vision defects.

Please call 03 8370 6236 for further information.

Perimetry

            Automated static & Goldmann kinetic visual field tests

(including driving tests for VicRoads e.g. Binocular Esterman)

Contrast Sensitivity

Dark Adaptometry

Occupational & Legal Vision Reports

We prepare official visual function reports for occupational accreditation, insurance claims and legal expert witness reports.

 

Essendon Eye Clinic

154 Buckley St.,
Essendon , VIC 3040

T: (03) 9331 4402
F: (03) 9331 3755
info@essendoneye.com.au


Referral Form for Essendon Eye Clinic

Referral Form for Essendon Retina