What are the symptoms of a retinal disorder?

Many. A retinal disorder is a fixed visual problem no matter where you look or what refractive correction is done (see a decrease or distortion in vision), wavy, scotoma, and flashes of light if there is retinal traction.
Varied. Detachments: flashing lights, floaters, loss of side vision. Macular degeneration: distortion and loss of central vision. Macular edema: blurring and small object size.