Light Sensitivity: discomfort or difficulty concentrating in fluorescent light, sunlight, bright lights, glare and lights at night.

Poor Depth Perception: difficulty with spatial awareness and judging distances accurately. Symptoms revealed in driving, parking, stairs, escalators , ball games.

Strain and Fatigue: physical symptoms are varied but include drowsiness, fatigue and headaches from visual tasks. Eyes can feel tired, sandy, scratchy, itchy or watery from reading.

Attention Deficit Disorders: problems concentrating during tasks such as reading, computer work, listening and observing.

Contrast and Colour Sensitivity: problems with high contrast, such as black print on white paper, bright colours, busy patterns such as stripes and polka dots.

Restricted Span: inability to read words in groups or see objects in the environment as a whole.

Inefficient Reading: skipping words/lines; rereading for information; slow reading rate and problems with tracking