I have listened to Dr. Pamela Fong about the
human eye and I learned a lot. Some of the things that I have learned include: the pupil getting bigger when it is darker and smaller when it is lighter, and also I learned about the retina and cornea. Another thing I learned is that the brain and the eye work together. I learned the following definitions about the eye:
Stroma- the eye's supporting tissue.
Retina- a small patch of tissue at the back of the eyeball that contains the light-sensitive rods and cones.
Cornea- the transparent anterior structure of the eye's outer coat that covers the iris and pupil.
Pupil- the central opening of the eye's iris.
Pigment- any substance or matter thats colors the body.
Cones- the light-sensitive retinal cells that respond best to bright light and provide detection pf the spectral colors.
Lens- a transparent structure that is convex on front and back, located between the vitreous humor and the iris, and that focuses light rays onto the retina.
neuron- nerve cell; the basic conducting unit of the nervous system consisting of a cell body and thread like projections that conduct electrical impulses.
Iris- the pigmented diaphragm which is perforated by the pupil and is located behind the cornea.
Optic Nerve- the nerve carrying visual information from the eye to the visual cortex via the optic tract
Cortex- the gray matter on the outer surface of the brain.
The picture to the right is the inside of a right eye.
