The visual communication in the optonometric scales

Abstract

Communication through vision involves visual apprenticeship that demands ocular integrity, which results in the importance of the evaluation of visual acuity. The scale of images, formed by optotypes, is a method for the verification of visual acuity in kindergarten children. To identify the optotype the child needs to know the image in analysis. Given the importance of visual communication during the process of construction of the scale of images, one presents a bibliographic, analytical study aiming at thinking about the principles for the construction of those tables. One considers the draw inserted as an optotype as a non-verbal symbolic expression of the body and/or of the environment constructed based on the caption of experiences by the individual. One contests the indiscriminate use of images, for one understands that there must be previous knowledge. Despite the subjectivity of the optotypes, the scales continue valid if one adapts images to those of the universe of the children to be examined.

Assessment of the virtual guide on eye self-examination in the context of HIV/AIDS

“…Then proceed to the evaluation of each eye separately, always starting by occlusion of the left eye. Acuity to be registered is one in which the person can see at least 75% of the line graphics, and the value considered normal is 0.8 (8) . In the evaluation of the near VA, the person should use a scale similar to the previous one, differing from the first by presenting fewer lines, in this case, six, J1, J2, J3, J4, J5 and J6 and by the graduation between them, which varies from 0.37 m to 1.25 m. The individual remains sited, holding the card at a distance of 33 centimeters from the eyes, evaluating an eye at a time, identifying until which line he/she can read.…”