640. Restrictions on the treatment of eye injury or disease.

640.     Restrictions on the treatment of eye injury or disease.

Where it appears to a registered optometrist or registered dispensing optician1 that a person consulting him is suffering from an injury or disease of the eye2, the registered optometrist or registered dispensing optician must3 refer that person to a registered medical practitioner, unless he is acting on the advice or instructions of a registered medical practitioner, other than a medical recommendation for a sight test, in testing the sight of such a person or in fitting and supplying such a person with an optical appliance4; but in