Vision problems include seeing spots, having blurry vision, catching shadows in the corners of their eyes and seeing double. Causes include lack of sleep, problems with contact lenses or eyeglasses and even staring at a screen for too long. However, impaired vision may also be directly related to a lack of vitamin B12. The eye's blood vessels can become blocked when there is a deficiency. This blockage can cause damage to the retina and subsequently to the optic nerve. These symptoms very rarely ever result in permanent damage, as B12 supplements typically restore vision quickly. Schedule an appointment if your vision problems are consistent and do not seem to be waning.
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