Introduction to ophthalmology Flashcards
Where is the posterior segment of the eye?
Posterior to posterior surface of lens
Where is the anterior segment of the eye?
Anterior to vitreous humour
Where is the posterior chamber of the eye?
between the iris and lens
Where is the anterior chamber of the eye?
in front of the iris
What is the fornix of the eye?
When the conjunctiva reflects around superiorly and inferiorly this is called the fornix
What type of cells line the anterior surface of the cornea?
stratified
squamous
nonkeratinising epithelium
How can you differentiate between retinal arteries and veins?
the larger (1.5-2x) vessels (darker) are the veins
the paler thinner vessels are the arteries
What is used to test colour vision?
Ishihara plates
What are the features of conjunctivitis?
is not painful, more uncomfortable
there should NOT be corneal involvement.
Redness - The borders of the sclera can be very red and this usually originates from the edges of the eyes to centrally
What are the symptoms of herpes simplex keratitis?
generally painful
corneal and limbus involvement
very red
What can be used to visualise things in the cornea?
Fluorescein dye
What can happen with untreated Herpes simplex keratitis?
Corneal opacity with vascularisation
