The test-retest reliability of colored filter testing in relation to two symptom levels of dyslexia was evaluated using a forced-choice test procedure. Two tests, separated by two weeks, were conducted with 41 participants (ages 15 to 17). Results indicated poor test-retest reliability. (Author/DB)

This study of the effects of lenses of different colors on the visual abilities and comfort of 20 patients with retinal disease found that, in home trials, the critical issue was density more than color. Office tests of visual acuity and contrast sensitivity with colored lenses did not predict subjective benefit. (Author/JDD)

The study compared the effectiveness of Irlen filters and traditional optometric intervention with 30 volunteers (ages 9-51). Pre- and posttesting revealed that subjects in both treatment groups were more comfortable after treatment, that only the vision therapy group showed improved visual functioning, and that the Irlen filter group did not show…

A color microfiche containing ocular tissue section images was developed and introduced into an ocular history and embryology course to enhance student access to such images. Students found that the materials enhanced their ability to learn. Faculty found that the materials allowed students to prepare in advance for the laboratory, freeing class…

The study examined the effectiveness of the use of nonoptical tinted (Irlen) lenses with 44 children (ages 9-16) with reading disabilities. Evaluation after 6 and 12 months indicated a significant improvement in attitude to school and to basic academic skills. Reading comprehension and accuracy, but not rate, were also significantly improved.…