 Next up to the stage, we have Brendan Thompson-Older from the College of Medicine, Biology and the Environment. The title of Brendan's talk tonight is A Sight for Sore Eyes, Vision Testing in Neurological Disease. One in six of you will have a stroke and half of those will die. For those that survive, stroke is the leading cause of disability in Australia. You can damage your pathway from your eye to the back of your brain where your vision is processed in the visual cortex. Without proper vision, you cannot read, you cannot dry, you cannot play sport or watch TV. Just imagine how different your life would be. There are many different types of visual impairment which can occur after stroke. Some are well known and some less known. Take higher visual function loss. Here I have an example. This is my rendition of Prospicnosia, which is the inability to recognize distinctive features of a person's face. Those with this condition cannot recognize their family, their friends or indeed their selves. Or perhaps consider that you have a different problem and you can't tell how fast a car is moving when you go to cross the road. Or say you look in your garden patch and you can't tell which flower is which because all the colors appear the same. These are some forms of high visual function disorder. And what's really strange is doctors do not typically test for it. Currently, doctors don't have the time to test for all these different types of high visual function disorder. What I aim to do is measure how common they are so I can find whether they should be spending time on these particular diseases. So why do these patients not recognize it themselves? I'll give this analogy. Consider that today you can see in color and tomorrow you can't. But all your memories are also in black and white so you have nothing to compare to. The way you currently see is the way you believe that you've always seen. So you don't have anything to go on. We also want to improve the ability of others to test for these high visual function disorders. Currently when you go to do a test many of them require physical response such as pressing a button. This may seem quite easy to us but for stroke patients who have cognitive or muscle problems they aren't easily able to complete this. So I'm trialing out a new machine which replaces this buzzer with changes in your pupil diameter. The test produces results very, very quickly so it produces tens of thousands of data points which then I have to process using an algorithm. Using all this we can advise doctors whether or not they should be standardly testing for these different range of high visual dysfunction. Overall the aim is to better detect and better diagnose visual deficits and those with neural damage. Given that in this room alone 75 of you will have a stroke during your lifetime. This is particularly important to you. So when you do have a stroke we have the information we need to help. Thank you.