CORDELIA MOLLOY / SCIENCE PHOTO LIBRARY CORDELIA MOLLOY / SCIENCE PHOTO LIBRARY
Sight loss caused by tunnel vision. Street scene as it would appear to a patient with tunnel vision, or the loss of peripheral vision leading to a reduced visual field. It can be caused by the genetic eye disorder retinitis pigmentosa, or by glaucoma. It is currently untreatable. For an image showing how someone with normal sight would view this scene, see P420/596.
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