Chronic Persistent Visual Loss: Neural Causes
What causes it?Lesions of the retina, optic nerve, optic chiasm, or retrochiasmal visual pathway may be responsible. Visual field examination is a big help in localizing lesions of the optic nerve and its connections in the brain. Click here to see how visual fields are used in this task.
After having reviewed all the visual field defects, click here to see how formal visual field testing is done.