What CN are you blocking when you do an auriculopalpebral nerve block?
Where do you inject when performing an auriculopalpebral nerve block? (2)
cranial to the base of the ear and over the zygomatic arch
How do you perform retropulsion of the globe to examine the third eyelid?
retract eyelids while applying digital pressure on the globe
What are you examining when you perform biomicroscopy/slit lamp exam? (3)
depth/location of corneal and lens opacities, evaluation for aqueous flare, determine depth of corneal ulcers
What is aqueous flare? What causes it?
abnormal appearance of the beam of light from the slit lamp as it travels through the anterior chambers; light is reflecting off proteins in the aqueous humor, caused by inflammation in the anterior chamber
What are the components of the posterior segment examination? (5)
retina, optic nerve, vitreous, direct and indirect ophthalmoscopy
_________ ophthalmoscopy is better for routine small animal fundic exam.
What are some special ophthalmologic diagnostic techniques? (5)
culture and susceptibilty, fluorescein staining, cytology, intraocular pressures, nasolacrimal irrigation
When determining intraocular pressures, be careful...
to NOT touch the globe!
What are methods of cannulation for nasolacrimal irrigation? (2)
normograde through ocular puncta, retrograde through nasal puncta