| Popis: |
After carrying out far-vision visual acuity tests, near-vision visual acuity tests, refraction tests, and ciliary muscle function tests at A elementary-school, we stressed the need for school medical checkups to be followed up by consultation at an ophthalmology clinic in the case of children with poor far-vision visual acuity, poor near-vision visual acuity, or eye control dysfunction. 155 children were seen in an ophthalmology clinic and given a detailed examination. We carried out an in-depth analysis of the results to clarify the extent to which visual acuity problems hinder children's learning ability. The results of our analysis revealed the following : (1) 16 of the children (10.3%) had "poor far-vision visual acuity only" ; (2) 36 of the children (23.2%) had "poor near-vision visual acuity only" ; (3) 13 of the children (8.4%) had "eye control dysfunction" only ; (4) 47 of the children (30.3%) had "poor far-vision visual acuity+poor near-vision visual acuity" ; (5) 15 of the children (9.7%) had "poor far-vision visual acuity+eye controldysfunction" ; (6) 4 of the children (2.6%) had "poor near-vision visual acuity+eye control dysfunction" ; and (7) 16 of the children (10.3%) had "poor far-vision visual acuity+poor near-vision visual acuity+eye control dysfunction". It became clear that large numbers of children suffer from various visual acuity problems in addition to poor far-vision visual acuity. With current far-vision visual acuity testing alone, there is no way to treat children with other visual acuity problems, but owing to the progressive simplification of school medical checkup, it is difficult to introduce the refraction test and the ciliary muscle function test. The expense and technical complexity of such tests add to the difficulty. However, we believe that near-vision visual acuity tests could be introduced easily, because the difference with the current far-vision visual acuity test lies only in the eye-mark and the distance. Carrying out near-vision visual acuity tests simultaneously with far-vision visual acuity tests would give us more opportunity to discover children with low hyperopia or eye control dysfunction, and ensure that all children have equal opportunity to learn. |
