7 matching records for Vision One.
A mains electricity (AC-powered) ophthalmic device used for the evaluation and training of a patient's binocular function, i.e., the ability of the two eyes to focus on a single object. It is used for diagnosing strabismus (squinting), a deviation of the ey...
An ophthalmic device that consists of various coloured materials, e.g., coloured yarns or colour vision plates (multicoloured plates which patients with colour vision deficiency would perceive as being of one colour), used for evaluating colour vision.
An electrically-powered ophthalmic device intended to for the evaluation and training of a patient's binocular function, i.e., the ability of the two eyes to focus on a single object. It is used for diagnosing strabismus (squint), a deviation of the eye whi...
An ophthalmic device for binocular vision testing. The patient views a four-dot light combination (1 white, 1 red and 2 green) through coloured glasses and informs the examining doctor when the combination perceived changes. This visual impression provides ...
A mains electricity (AC-powered) ophthalmic instrument used to test a patient for abnormal red/green colour vision by differentiating the red/green colour vision defects. It typically consists of two different light sources, one that permits the mixing of p...
An implantable artificial substitute for a natural cornea used to improve/restore the vision of an adult patient with corneal opacity. Also known as a keratoprosthesis, this is usually a two-component device made of, e.g., poly 2-hydroxyethylmethacrylate (P...
A noninvasive, hand-held, manual device intended to be used during an eye examination to determine objective and subjective convergence points, examine accommodation, and determine the master eye. Often called a Royal Air Force (RAF) convergence rule or RAF...