![]() Prevention is the key, particularly when it comes to glaucoma. A prism lens can sometimes be added to your glasses for certain kinds of PVL, but otherwise, there’s no correction that can be applied. But if PVL is caused by other eye conditions, such as glaucoma or retinitis pigmentosa, it is permanent. If your PVL is caused by migraine, then it’s usually temporary. ![]() Some people with PVL experience bumping into things, tripping, or falling. Navigating while walking or orienting yourself can become difficult. You may have trouble seeing in low light or at night. The outer angles of your vision may seem distorted initially, and over time, you aren’t able to see anything on the periphery of your visual field. The most common experience with PVL is that your central vision is just fine, but you have difficulty seeing from the side.
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