Vision
Hereâs a little something about residual vision.
Food for thought for writers.
Every little bit of vision allows someone to function differently.Â
If someone has very limited peripheral vision as though looking through a pinhole, that can still help them walk in a straight line by scanning for a specific location and walking toward it even if they canât see obstacles, stairs, step ups, or faces. When using technology they might be able to use that vision to read some words or find buttons even if they have to use mostly auditory methods of accessing materials.Â
Light perception and seeing shapes. Again this can help with walking in a straight line and locating doorways if they can make it out. They might be able to locate objects more easily in their room. They will know when they walk into different lighting between rooms or outside if they walk beneath a building or under a tree.Â
Loss of central vision means the loss of detail so this person might have no trouble walking around and avoiding things but they may not recognize faces or see if someone is a man or a woman. They might be able to see cars but not any detail or color of the car. They might have a lot of color confusion as central vision decreases because thatâs where most of the cone cells are (color vision).
Total vision loss presents challenges of walking in a straight line, and use of more compensatory techniques to locate something in an unfamiliar environment. The examples above might be able to find a free chair in a waiting room or a help desk but someone with no vision might have to call out for help or systematically search for the desk or chair, and then ask. They could feel the difference between an open large room or walking outside but canât anticipate it until they can hear or feel it.Â
Just some food for thought about things Iâve experienced with people Iâve worked with. Again, thereâs also some instances where people may function as though they are totally blind even though they have vision and some people who are totally blind may have better orientation skills than some that do have vision. Itâs all relative and individual.Â












