Medically reviewed by Andrew Greenberg, MD Key Takeaways Peripheral vision is the ability to see through the sides or out of ...

A person with peripheral vision loss has difficulty seeing things above, below, or at the side without turning their head. This type of vision loss is also known as tunnel vision. Tunnel vision can ...

Impaired vision and blindness are common. About 3.4 million people in the US are blind or visually impaired. Vision is usually measured by visual acuity charts, and normal vision is expressed as 20/20 ...