Central and peripheral vision is tested by using visual field tests. Changes may indicate eye diseases, such as glaucoma or retinitis. Update Date: 07/28/2008Manju Subramanian, MD, Assistant Professor in Ophthalmology, Vitreoretinal Disease and Surgery, Boston University Eye Associates, Boston, MA. Review provided by VeriMed Healthcare Network. Also reviewed by David Zieve, MD, MHA, Medical Director, A.D.A.M., Inc.