Posted in Hospital Appointments, My Tests Explained

My Hospital Appointment – ERG test – Electroretinography Part 2

Photograph of a womans eye with white dot sensors around the eye. Electroretinography
So, this is sort of what an ERG ( Electroretinography) test is.
Did you wince? ☺
First of all you have some anesthetic drops popped in your eyes.
A cotton/hair thickness wire is then put to your eye and pads put on your face. Forehead and at each temple.
Around 5 wires run from your head to be plugged into a machine.
Then you have to look at the flashing chequered grid for sometime.
After this, dilating drops are put in your eyes.
Then you sit in the dark without doing anything to let your eyes become accustomed to the darkness.
The next machine is like the visual field test I had.
You place your chin and face into the machine, then for about 20 minutes, white light pulsing and flashes at intervals.
You have to stare at a small red light and not blink while it flashes. You get a countdown to the next set of lights so you can time your blinking.
After that, it’s done, so you are unplugged.
Felt like an eyelash was annoying me in both eyes but it wasn’t as bad as I first thought.
It was more uncomfortable with the bright light. Which I’m photophobic anyway now as light hurts my eyes, hence part of why I’m having these tests for.
This tests finds out the condition and health of the light sensors in your retina, By electrical responses.
They feel better now but still slightly painful 2 days later.
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An honest, warts & all sightloss blog about living with a rare genetic eye condition, Macular Dystrophy, Stargardt's Disease. To track how this progresses in myself. Hopefully help others & bring awareness. Let's see what happens next...

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