Sight impairment is an issue that those with able vision often times think of in binary terms of total sight or total blindness but that is more often than not not the case. See Now’s blindness simulator lets the viewer experience the different levels of severity of sight impairment using familiar locations of the viewer as the starting point. It is a great tool for better understanding what the person who is experiencing these ailments is going through.

http://simulator.seenow.org/