The aim of the work was to compare measurements of eccentric fixation in children with amblyopia using two different methods, a traditional visuoscopy and MIT. Monocular fixation was evaluated using visuoscopy and MIT in 16 patients (from 5 to 9 years old). Measurements were started with the better seeing eye to compare the results obtained with the amblyopic eye. All study participants were selected with anisometropic and refractive amblyopia. Visuoscopy is simpler than MIT and less dependent on patient responses, so visioscopy can be used for young children who have not yet acquired verbal skills. Children over the age of 5 can more easily understand the MIT method and get more reliable results. By determining the visual acuity and fixation point, it is possible to determine the maximum visual acuity achievable with an appropriate fixation. The MIT and visuoscopy methods complement each other, both of which can be used to identify the fixation point. In Latvia, amblyopia treatment is carefully performed in various vision institutions, but assessment of eccentric fixation is very rare. Evaluation of eccentric fixation can help predict the outcome and treatment progression of amblyopia.
The classical treatment option of amblyopia is occlusions of non-amblyopic eye. The newest methods involve specialized computer and phone games, applications that involve both eyes in visual processing during treatment as well as stimulate binocularity. The aim of the work was to assess the efficiency of specialized phone application ‘Duovision’ in the treatment of amblyopia in preschool-age children. There were 30 participants (5-8 years old): 16 participants had occlusion therapy; 14 participants played the specialized phone application Duovision®. The visual acuity of amblyopic eye, as well as stereopsis was evaluated at near and far distances before the treatment, 2 and 4 months after the beginning of treatment. The results show statistically significant improvement in visual acuity and stereovision in both treatment groups after four months of therapy. The extent of improvement is similar in both groups. Specialized phone applications for amblyopia treatment may be recommended to patients from an age 3 when they are able to use a mobile phone, who want to improve their visual acuity in the amblyopic eye and are not willing to use occlusions. The only requirement for using specialized applications – patients need to have binocular single vision. In conclusion, the use of specialized phone applications is an alternative type of amblyopia treatment compared to occlusion therapy.
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