Pakistan’s Neurosurgery Students Society - PNSS - Website: http://neurosurgeryatliaquatnational.com/home - Facebook page: https://www.facebook.com/Pakistans-Neurosurgery-Students-Society-PNSS-946121555416253

1. MEHWISH ASLAM RAHEEMI
OCCIPITAL LOBE
Posterior most of the brain lobes,
associated primarily with vision.

3. GYRI & SULCI
1)No distinguishable gyri.
2)Sulci present.i.e Parieto-occipital sulcus separating the
occipital lobe from parietal lobe and the calcarine sulcus
(medial surface) extending from the posterior part of corpus
callosum up to the occipital pole.
3)Parieto-occipital sulcus makes an acute angle with the
calcarine sulcus.

5. AREAS
•PRIMARY VISUAL AREA
•SECONDARY VISUAL AREA

6. PRIMARY VISUAL AREA
• Location: Posterior walls of Calcarine sulcus.
• Morphology: Thin cortex with striations seen by the naked eye .
Hence, Striated Cortex.
• Function: Associated with afferent visual fibers from the ipsilateral
temporal fibers and contralateral nasal fibers through the lateral
geniculate body to the PVA.
• Defect/Lesion: Leads to crossed homonymous hemaniopia.

9. SECONDARY VISUAL CORTEX
• Location: around the Primary visual cortex
medially and laterally.
• Function: Associates vision with past experience .
Helps in Appreciation & Recognition.
• Defect/Lesion : Disability to recognize Objects.

11. OCCIPITAL EYEFIELD
• Depends on stimulus.
• Involuntary.
• Reflex tracking movement
• Difference b/w Frontal & Occipital eye field: The formal is
independent of stimulus , voluntary scanning movement.

13. THANK YOU!