VISUAL SYSTEM Flashcards
Optical Components of the Eye
Cornea
Pupillary opening of iris
Lens
Retina
Photoreceptors of the Retina
Rods - Vision in Low light; CANNOT detect color
Cones - Vision in bright light; Detects color
Neurons of the Retina
Bipolar Cells
Ganglion Cells
Horizontal Cells
Amacrine Cells
Ganglion Cells
Forms the nerve fiber layer; fibers exit the optic disk
Horizontal Cells
sharpens the receptive field of the bipolar cell; Interneuron that connects the photoreceptor to the bipolar cell
Amacrine Cells
sharpens the receptive field of the ganglion cell; Interneuron that connects the bipolar cell to the ganglion cell
Bipolar Cells
Conveys information about small spots of light surrounded by darkness
Optic disk
Small blind spot in each eye
1st order neuron of the Visual System
Rods & Cones
2nd order neuron of the Visual System
Bipolar Cells
3rd order neuron of the Visual System
Ganglion Cells
Fovea Centralis
Area with no rods but tightly packed with cones; capable of acute and detailed vision
Macula
Retinal Area for central fixated vision in good light
