THE EYE IS THE ORGAN OF VISION.IT HAS A COMPLEX STRUCTURE CON SISTING OF A TRANSPARENT LENS THAT FOCUSES LIGHT ON THE RETINA.THE RETINA IS A COVERED WITH TWO BASIC TYPES OF LIGHT-SENSITIVE CELLS-RODS AND CONES.THE CONE CELLS ARE SENSITIVE TO COLOR AND ARE IN THE PART OF THE RETINA CALLED THE FOVEA,WHERE THE LIGHT IS FOCUSED BY THE LENS.THE ROD CELLS ARE NOT SENSITIVE TO COLOR,BUT HAVE GREATER SENSITIVITY TO LIGHT THAN THE CONE CELLS.THESE CELLS ARE LOCATED AROUND THE FOVES AND ARE RESPONSIBLE PERIPERAL VISIONS AND NIGHT VISION.
https://www.youtube.com/watch?feature=player_detailpage&v=ZH8L3i-qxuE
No hay comentarios:
Publicar un comentario