Ophthalmology Flashcards
Options for debriding a corneal ulcer (5)
Cotton bud
Needle
Back of scalpel
Scissors
Burr
What should NEVER be used to treat a corneal ulcer
Steroids
Why should steroids never be used when treating a corneal ulcer? (2 reasons)
Predispose to infection
Slow corneal healing
Treatment of a corneal ulcer
Debride
Antimicrobials
Flunixin
Atropine?
What corneal pathology is shown in the picture?
Corneal ulcer
What corneal pathology is shown in the picture?
Scarring
What corneal pathology is shown in the picture?
Mineralisation
What corneal pathology is shown in the picture?
Oedema
What corneal pathology is shown in the picture?
Corneal ulcer and oedema
What corneal pathology is shown in the picture?
Corneal abscess/tumour
What corneal pathology is shown in the picture?
Severe ulcer and scarring
What corneal pathology is shown in the picture?
Abscess
Which uncommon nerve block is this?
Lacrimal
Which uncommon nerve block is this?
Infratrochlear
Which uncommon nerve block is this?
Zygomatic
What does the Seidle test diagnose?
Perforation (emergency)
What anterior segment pathology is this?
Iris cyst
What anterior segment pathology is this?
Synechiae (lens replaced into perforation)
What anterior segment pathology is this?
Opacity
What anterior segment pathology is this?
Bulla
What anterior segment pathology is this?
Melting ulcer
What pathology is this?
Corneal ulcer
What pathology is this?
Oedema and tumour
What anterior segment pathology is this?
Abscess
What pathology is this?
Anterior lens luxation
What pathology is this?
Ulceration
What pathology is this?
Congested vessels
What pathology is this?
Corneal ulcer about to burst
How would you interpret these findings in a comfortable pony that had suffered from a corneal ulcer?
Scarring (as the blood vessels are regressing)
Is this a normal fundus in a blue eye?
Yes, little pigmentation so vessels visible
What colour of horse may have a fundus with this appearance?
Palamino
Is this a normal or abnormal eye ultrasound?
Abnormal (precipitates in vitreous, cataract in lens)
What pathology is this?
Asteroid hyalosis/vitreous floaters (proteinaceous debris, inflammation)
What pathology is this?
‘Bullet hole’ chorioretinopathy (previous inflammatory response)
What can cause this pigment retinopathy?
Equine motor neurone disease
What does this butterfly scarring lesion around the optic disk indicate?
Past uveitis
What is this optic disk pathology?
Tumour
What pathology is this?
Retinal detachment
What pathology is this?
Retinal detachment
What pathology is this?
Retinal detachment
Does retinal detachment affect vision?
Yes
What ophthalmic disease do fungal hyphae suggest?
Fungal keratitis, difficult to treat and manage
What are the two types of viral keratitis?
