The retina is part of the eye that contains millions of cells that are sensitive to light. Other cells in the eye receive the visual information and organise it. Your retina then sends the information gathered through the optic nerve to the brain allowing you to see.
Retinal disorders can share a number of symptoms that are similar, these include seeing sudden flashes of light, the appearance of floaters in your vision, any changes in vision, loss of vision in some areas or blurry vision, reduced central or peripheral vision, complete loss of vision and changes in colour of the vision.
Sometimes this may not be serious and only require some eyedrops or dietary supplements, other times some of these symptoms may require a doctor to diagnose.