Environmental factors in school classrooms: How they influence visual task demand on children.

ABSTRACT:

Background

The key visual factors in a classroom environment include the legibility, angle subtended at the eye, illumination, contrast, and colour of the visual task. The study evaluated the visual environmental factors in the school classrooms.

Materials and methods

The distance Visual Acuity (VA) demand was evaluated based on the size of visual task i.e. the smallest size of chalkboard writing and its viewing distance. The environmental factors which can have an effect on the visibility in classrooms such as illuminance on the chalkboard and at student's desk, chalkboard contrast, light sources and the student's perception of their classroom visual environment were measured. To quantify the distance VA demand and to compare with a standard high contrast VA chart measure,

SUBMITTER: Negiloni K 

PROVIDER: S-EPMC6328081 | biostudies-literature | 2019

REPOSITORIES: biostudies-literature