Eye and Orbit

What are the two main axis of the eye

Optic axis and visual axis

What is the fovea centralis

The region of highest acuity on the retina where light is focused during fixation.

What are the two main arterial sources of the orbit

Internal and external carotid artery

Which artery is the main blood supply to the orbit

The opthalmic atrery from the internal carotid

What branch from the external carotid contributes to the orbit

The infraorbital

What do the short posterior ciliary arteries supply

The choroid

What do the long posterior cilliary arteries supply

The outer structures of the eye

Where do the superior and inferior opthalmic veins drain

The cavernous sinus via sup orbital fissure

What is the scleral venous sinus

A circular channel around the ant chamber that drains aqueous humour.

What are the vorticose veins

Veins draining the vascular layer of the eyeball into the inf opthalmic vein.