The visual system is incredibly complex and is more than just being able to see clearly. There are 17 essential visual skills, with visual acuity being only one of these skills. Vision also refers to how well we understand what we see. Behavioural optometry assesses both visual function, which refers to how clearly one can see, as well as visual perception, which refers to how the brain interprets what we see.

Visual functional assessments include assessment of eye movement skills, eye focusing skills, as well as eye teaming skills. Most people are able to see well for short periods of time, but some have trouble maintaining clear vision over time. This could lead to eye strain, poor concentration and even avoidance of the task.

Visual perceptual assessments include assessment of visual analysis skill, visual motor integration, visual memory, visual sequencing, visual spatial skill and visualisation. These skills are important prerequisites for learning at school. Visual perceptual skills are learnt through experience and hence, deficits in these skills can also be trained through vision therapy.

Behavioural optometry may use a number of different methods to help improve one’s vision. These may include lifestyle recommendations, the use of spectacle lenses or prisms, use of contact lenses, vision therapy or referral to other health care practitioners.