A LOW-COST DEVICE FOR INVESTIGATING CHROMATIC VISION
A LOW-COST DEVICE FOR INVESTIGATING CHROMATIC VISION

Summary/Abstract: The retina is the light sensitive portion of the eye that contains cone cells responsible for color vision and cone cells responsible for order in darkness. When the rods and cones are stimulated, light signals are transmitted successively by neurons retina, optic nerve fibers then finally reaching the cerebral cortex. Normal eye retina shows three types of color light-sensitive cells; cone cells are sensitive to red light, green or blue. View color deficiency is the inability or decreased ability to see colors or the perception of differences between colors. Depending on the number of cells absent or impaired color vision impairment operation is called: monocromatism, when all the cones are missing or not working, dicromatism when one of three types of cells and tricromatism missing or when one of three cell types has a poor spectral sensitivity. In 1802, Thomas Young consider that all human sight is produced by combining sensitivity to red, green and blue. This theory, amended by Hermann von Helmholtz in 1852, it is known as Young-Helmholtz theory or trichromatic color vision. The fundamental idea was that the eye responds to the three primary colors and combining the three primary colors through additive synthesis of colors forms all other colors. These theories underlie the eye color deficiencies investigation. The paper aims to provide an inexpensive device necessary to investigate color vision in humans. This is achieved in the components recovered from the other old systems, reconditioned and assembled using a simple technology. Research presented the paper will refer both to the device and for tests with it. Studies will be made on different age groups in order to detect any abnormal chromatic vision.

• Details
• Contents