eye MEDED

Select the bone which forms part of the roof of the bony orbit

• lesser wing of sphenoid

• maxilla

• ethmoid

• body of sphenoid

• greater wing of sphenoid

which of the following travels through the superior orbital fissure to reach the orbit

• optic nerve

• zygomatic nerve

• opthalmic artery

• abducent nerve

• infraorbital artery

you are testing a patients corneal reflex using cotton wool on the right cornea. The right eye does not blink but the left eye blinks appropriately.Which is the most likely explanation for this finding?

• lesion in the left optic nerve

• lesion in the left trigeminal nerve

• lesion in the left oculomotor nerve

• lesion in the right facial nerve

• lesion in the right oculomotor nerve

which nerve primarily acts to adduct the eye

• optic nerve

• abducens nerve

• superior oblique nerve

• oculomotor nerve

• trochlear nerve

A 50-year-old man presents with double vision, especially when looking to the right. On examination, he has difficulty abducting his right eye Which of the following is the most likely diagnosis?

• right oculomotor nerve palsy

• left trochlear nerve palsy

• right abducens nerve palsy

• left oculomotor nerve palsy

• right trochlear nerve palsy

A 38-year-old woman presents to the GP. She denies any pain or history of trauma. On examination, the right pupil is smaller than the left, and the eyelid is slightly ptotic. What is the most likely diagnosis?

• right oculomotor nerve palsy

• sympathetic nerves lesion

• right optic nerve lesion

• right abducens nerve palsy

• right trochlear nerve palsy

At what point in the visual pathway do the nasal fibres of each optic nerve decussate?

• lateral geniculate nucleus

• optic chiasm

• optic tract

• optic radiation

• medial geniculate nucleus

Question: A patient presents with a loss of vision in the pattern shown above. Where is the lesion

• optic nerve

• optic chiasm

• lateral geniculate nucleus

• optic radiation

• visual cortex

Which of the following processes is responsible for this accommodation reflex when focusing on a nearby object?

•  Activation of the sympathetic nervous system

• Relaxation of the ciliary muscle, pupil dilation, and divergence of the eyes

• Contraction of the ciliary muscle, pupil constriction, and convergence of the eyes

• Relaxation of the ciliary muscle, pupil constriction, and divergence of the eyes

• Contraction of the ciliary muscle, pupil dilation, and divergence of the eyes

You are testing a patient’s pupil responses to light. When light is shone into the left eye, both pupils constrict. However, when light is shone into the right eye, neither pupil constricts. What is the most likely location of the lesion?

• right optic nerve

• left optic nerve

• right oculomotor nerve

• left oculomotor nerve

• right opthalmic branch of the trigeminal nerve