The College of Optometrists (UK) has specified guidelines for optometrists who use the colorimeter system. A society for coloured lens prescribers has been established to provide a list of eye-care practitioners with expertise in the provision of coloured lenses for the treatment of visual stress.<unk>  Method The<unk>  Method uses coloured overlays and tinted lenses in the form of glass or contact lenses. The method is intended to reduce or eliminate perceptual processing errors; it is claimed the resultant retiming of visual signals in the brain improves the reading difficulties associated with scotopic sensitivity syndrome.
Irlen syndrome
Kufor–Rakeb syndrome
Fox–Fordyce disease
Pretzel syndrome
Laron syndrome
Pusher syndrome
Letterer–Siwe disease
Leschke syndrome