1. Physiology of Vision
Optic Pathways
Dr. Sumera Gul

2. Learning Objectives
At the end of the lecture the students should be able to:
Explain the optic pathway
Discuss the functions of lateral geniculate body
Discuss organization and function of visual cortex
Explain the neural patterns of stimulation for visual image

3. Review of Previous Lecture

8. Optic Pathway

10. Visual Cortex

12. Visual fibers also pass to several older areas of the brain
(1) suprachiasmatic nucleus of the hypothalamus (2) into the pretectal nuclei in the midbrain (3) Into the superior colliculus (4) Into the ventral lateral geniculate nucleus

14. Importance of of Lateral Geniculate Body
Relay station Point-to-point transmission Gates the transmission of signals

16. A. Complete blindness of left eye B. Bitemporal hemianopia C
A. Complete blindness of left eye B. Bitemporal hemianopia C. Homonymous hemianopia

18. A- Right homonymous hemianopia
B- Left homonymous hemianopia
C- Bitemporal hemianopia
D- Binasal hemianopia

20. Questions?