![]() įigure 1: Mean values of the total words read, total errors made, and reading rate with and without color overlaysįigure 2: Comparison of symptoms experienced with and without color overlaysĪ week later, Wilkins et al. Zero to five symptoms were reported across all the participants. A questionnaire containing a simple set of closed-ended questions pertaining to ten symptoms experienced when reading was administered to each participant. Reading rate was calculated as the number of words read correctly in 1 min. RRT recording sheet, recording the number of words read, and errors made. As the participant read the researcher simultaneously timed the reader with a stopwatch and followed using the Wilkins et al. The 25 participants, of whom 56% were males, 44% were females, 56% were Black, and 44% were Indian, with a mean age of 9 ± 1.5-year-old proceeded to the first reading evaluation using the Wilkins et al. Five participants could not identify the words and were excluded from the study. Rate of Reading Test (RRT) prescreening chart was administered thereafter. Ten participants failed this prescreening tests. Only forty participants returned with signed consent forms.Ī prescreening visual assessment, including visual acuity, cover test, accommodation, ocular motilities, and ocular health, was performed on each participant to eliminate visual-related reading anomalies. Information documents explaining the nature of the study and consent forms were presented to the parents of each of the participants. Participants, with confirmed diagnosis of dyslexia by the educator, were conveniently selected across three conveniently selected schools for the learning disabled. ,, An uncontrolled experimental study design was used, analyzing the before, and after effects of colored overlays on reading performance using a modified procedure to that of a previous study. Dyslexic children may benefit from the use of colored overlays however, ongoing debates question its use on dyslexic children. Available from: Ĭolor overlays were found to reduce eyestrain and headaches experienced when reading, improving reading performance. The effect of color overlays on the reading ability of dyslexic children. How to cite this URL: Hlengwa N, Moonsamy P, Ngwane F, Nirghin U, Singh S. If the overlay is of genuine benefit then your child will continue to use it when reading, ruling out the placebo effect.Īt this stage we can determine what coloured spectacle tint would also provide the same reading benefit, using our Colorimeter machine, based at our Canterbury & Ashford practices, if spectacles are preferred to using an overlay.How to cite this article: Hlengwa N, Moonsamy P, Ngwane F, Nirghin U, Singh S. An acetate sheet of the preferred colour will be issued, for a small charge, and your child will be asked to use this when reading over the next 4 weeks. Colours which make the reading easier and more comfortable will be short-listed then the preferred colour determined. illusions of colour – blobs of colour on the page or colours surrounding letters or wordsĪfter a full sight test, eye muscle and focussing assessment has been conducted, you or your child will be asked to view a page of random text whilst being shown a comparison of that text through different coloured overlays.patterns appearing, sometimes describes as “worms” or “rivers” running through print.“What I see” courtesy of Ffai Gritten MA Visual Artist. (Other terms include Irlen syndrome, Scotopic Sensitivity Syndrome SSS or Pattern Glare).Ī representation of text as it may appear to a patient with visual stress. ![]() The term Meares-Irlen syndrome refers to a form of Visual Stress it is the collection of symptoms or signs of visual fatigue when reading that are reduced when a colour is used. Visual perceptual distortions can be the experience of any combination of blurring, movement, doubling, shadows, flickering, seeing shapes, lines or colours when attempting to read text. Visual Stress is found to exist in many conditions including: It is estimated that 1 in 5 people with dyslexia experience visual stress, but although they may co-exist, visual stress and dyslexia are different conditions. The symptoms can occur despite normal vision.Īpproximately 5% of the population are severely affected by Visual Stress and 20% to a lesser degree. This can increase reading fluency and speed, reduce headaches and increase the duration of comfortable reading. This service is offered at all Cargill’s practices.Ĭoloured overlays aim to reduce Visual Stress, the perceptual distortions experienced whilst reading text.
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