Dorothy Crystal is a Specialist Optometrist working in this field. Yesterday about 16 of us (support for Learning teachers, health professionals) were priviliged to hear her talk passionately about her professional interest in children, optometry and learning difficulties. I shall try to summarise!
In Norway all children with ASN are assesses by optomerist as there is a proven high correlation between learning difficulties and visual problems – 61%. Hearing assessments follow on from this.
Children may have problems with focussing, binocular vision and binocular instability. The latter difficulty can be a big problem as information is processed differently. Simple daily exercises can resolve these issues in 97% of cases! If a teacher thinks a pupils may be dyslexic then a vision check should be carried out first however it is important to alert the optomerist that the check is requested because of concerns about learning. Should the screening indicate a problem then the child can be referred on to either Dorothy Crystall or the Eye Pavilion.
Visual Stress is the new term to replace Myles Irlen or Scotopic Sensitivity. It is diagnosed through a proper clinical process. Children may be tested for this if there is a family history of migraine or epilepsy. Assessment for coloured overlays used to treat visual stress, does incur a cost of £40. These overlays may only be required for 6 – 9 months
Children with astigmatic problems (wobbly eyes!) may sometimes invert letters in words. The incidence of this is increasing particularly in children of drug abusing mothers. Astigmatism will affect reading however larger print may help. If Astigmatism develops (rather than congenital) then there is a pathological reason, usually a brain tumour.
Teachers can look out for a variety of signs – child covers one eye to read, holds book at an angle, turns head at an angle when reading, rubs eyes , blinks a lot, fine and gross motor problems. If a child frequently daydreams s/he may be trying to correct blurry images. The history and symptoms provide the biggest clues for the optomerist. When using an Interactive Whiteboard the child should be directly in front of it. Copying from the IWB is usually very difficult for the child.
And of course the earlier the better for assessment – from P1 onwards.