D4RL: Strokes and Vision Problems

After the mentor meeting on Thursday it was said that I could look into some other ways to help with visual and cognitive impairments. Heres some information I found out looking at the Stroke Foundation website. About one-third of stroke patients experience vision loss and out of those who do most will not recover their vision. Some patients can however, this will usually happen within the first few months of recovery. In the resource it states that “your vision depends on a healthy eye to receive information and a healthy brain to process that information. The nerves in the eye travel from the eye through the brain to the occipital cortex at the back of the brain, allowing you to see. Most strokes affect one side of the brain. Nerves from each eye travel together in the brain, so both eyes are affected. If the right side of your brain is damaged, the left side vision in each eye may be affected. It is rare for both sides of the brain to be affected by stroke. When it does happen, it can result in blindness.”

Different types of vision issues can include colour blindness, visual field loss, blurry vision, double vision, moving images and other problems such as dry eye and sensitivity to light. “When a stroke effects ares of the brain that process information you see, it can cause issues like visual neglect, judging depth and movement and recognising objects and people.”

I now wanted to look up some ways of designing for colour blindness because I don’t think I have any prior knowledge on the topic. It might be important to consider as it affects stroke patients. On the Vision Aware website it says that bright colours are generally easier the see as they have the ability to reflect light more. Solid bright colours such as orange and red are usually more visible than pastels. It also states that lighting can be important and can influence the perception of colour. Colours like navy blue, brown and black may be hard to distinguish between. As well as blue, green, purple and pink, yellow, pale green. This will be something to consider when creating a colour palette. The site also states that colours like orange and red can be used for safety cues for visually impaired people. 

Doing this research has been quite interesting and has given me lots to consider when designing. I think important things to consider in the app is colour, typeface size and brightness. I think having an option to enlarge or shrink the type point would be very helpful, along with an option to hear the type being spoken. This would be very useful I feel for a lot of people suffering from sight problems. I will also take into account the research about colour blindness and make sure I am aware of which colours I should put together. Something else i feel like I should consider is that with impairments it can be hard to distinguish depth. So having flat block colour images might be the way to go by keeping it easy to understand. One more option I think I should have is the ability to change the brightness within the app. It comes up in the research about colour blindness and visual impairments so it would be helpful for the patients to be able to control the brightness for their own needs. I feel I have enough information now about visual impairments to create something that is accessible for as many people as possible. I now need to start on creating a visual identity taking all this information into account.  


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