A 58-year old patient who is blind comes to treatment accompanied by his wife. Which of these approaches should the dialysis technician use when interacting with the patient?
1) Speak loudly and slowly to ensure the patient can hear and understand.
2) Use non-verbal communication such as touch and gestures to convey information.
3) Ask the patient's wife to communicate on his behalf.
4) Provide written instructions and information in large print or braille.