Skip Navigation

Search Knowledgebase

Vision Changes

Topic Overview

Vision changes may indicate a serious problem with the tissue that lines the back of the eyeball (retina), optic nerve, or blood vessels in the eye. Evaluation by a health professional is needed for sudden vision changes, such as:

  • Flashes of light (photopsia). Photopsia is brief but recurrent streaks, sparks, or flickers of light, particularly when you move your eyes or head. The flashes of light may be easier to see when you look toward a dark background. The brief flashes may occur with retinal detachment.
  • Floaters, which are shadows or dark objects that float across your visual field. Sudden development of floaters may be a sign of a retinal tear.
  • A dark curtain or veil across part of your visual field. This may occur with retinal detachment.
  • Partial or complete vision loss in one or both eyes. This may occur with retinal detachment.

Related Information

Credits

By Healthwise Staff
Primary Medical Reviewer Kathleen Romito, MD - Family Medicine
Specialist Medical Reviewer Christopher J. Rudnisky, MD, MPH, FRCSC - Ophthalmology
Last Revised November 12, 2012

This information does not replace the advice of a doctor. Healthwise, Incorporated disclaims any warranty or liability for your use of this information. Your use of this information means that you agree to the Terms of Use. How this information was developed to help you make better health decisions.

© 1995-2013 Healthwise, Incorporated. Healthwise, Healthwise for every health decision, and the Healthwise logo are trademarks of Healthwise, Incorporated.