Singapore legislation
Regulation 4
of Optometrists and Opticians (Practice, Conduct, Ethics and Publicity) Regulations
Regulation 4
Referral of complex cases
Subregulation 1
A registered person who is not a registered medical practitioner shall not hold out that he can treat any injury or disease of the eye.
Subregulation 2
Where it appears to a registered person that his patient is suffering from an injury or a disease of the eye which is beyond his competence to treat, he shall, except in an emergency or where, owing to special circumstances, it is impracticable or inexpedient to do so, refer his patient to another registered person or an ophthalmologist whom he reasonably believes to be competent to treat the injury or disease of the eye, as may be appropriate.