Concerned about my mothers eye sight- cataracts & losing vision in eye during auras?

See an eye doctor. Cataracts are clouding of the natural lens of the eye. They are a reversible cause of decreased vision and should be evaluated by an ophthalmologist/cataract surgeon if they are interfering with vision. Auras describe a phenomenon of scintillating lights that begin on the side and move centrally. This is associated with migraines or just ocular migraines. See your dr. To rule out other causes.