<unk> , occasionally referred to as scotopic sensitivity<unk>  (SSS) or Meares-Irlen<unk> , is a postulated disorder of vision or image-processing in the brain.<unk>  is also sometimes referred to as asfedia or visual stress. Many mainstream professionals are skeptical of the concept. Research on<unk>  has produced mixed results, finding a possible neurological basis for the condition but little or no evidence supporting the most commonly proposed treatment using tinted eyeglasses or overlays to aid reading.
Irlen syndrome
Kufor–Rakeb syndrome
Fox–Fordyce disease
Pretzel syndrome
Laron syndrome
Pusher syndrome
Letterer–Siwe disease
Leschke syndrome