Visual acuity is a measure of how clearly an individual can see. It depends on how well light is focused on the back of the eye, as well as how the eyes and brain work together. Visual acuity for distance is expressed as a fraction.
Interpretations are based on the Royal College of Optometrists guidelines.
Questionnaire
This health category includes questionnaire data on changes in vision.
Measurements
Mandatory: Visual acuity result.
Non-mandatory: Visual acuity left eye, visual acuity right eye
Laboratory
Mandatory: N/A
Non-mandatory: N/A
Interpretations
Flag assignment and report content are generated to reflect the relevant combinations of data inputs from questionnaire responses and physical measurements.
🟢 Green flag: Indicates overall visual acuity of 6/4.5 or 6/6
🟡 Amber flag: Indicates overall visual acuity of 6/9, 6/12, 6/15, 6/18, 6/24, 6/32 or 6/60
🔴 Red flag: Indicates overall visual acuity of worse than 6/60