Introducing a new service!
Since March we have been able to offer an Electroretinography service (ERG). ERG enables us to assess retinal function in our patients by measuring electrical activity on the retina following stimulation with a standardised sequence of lights. The procedure is non-invasive and usually performed under moderate sedation to ensure consistency of results.
Having this equipment can be an important part of assessing patients before cataract surgery- if retinal function is reduced there is less justification for putting an animal through surgery. It also has an important role in the work up of blindness cases – when a cause of blindness is not clear from clinical examination alone, ERG can be used to differentiate between ocular and central blindness.
- A Shih tzu with optic neuritis
Tilly, a 3year old shih tzu, was presented with acute onset blindness. Ocular exam revealed fixed dilated pupils with an abscence of all reflexes. Mild bilateral exophthalmos was the only other feature noted on clinical exam. Differentials considered included SARDS and optic neuritis associated with extra-ocular myositis. An ERG was performed, confirming retinal function was still present. This gave us, and Tilly’s owner confidence to pursue treatment for optic neuritis, and Tilly’s vision was restored shortly after starting treatment with systemic corticosteroids.
Please contact us for more information,
Gareth Jones or Mark Russon
The Ophthalmology Department
The Park Referrals
on 0116 231 1635