opthalm anatomy + physiology Flashcards
what causes red eye in photographs
choroid layer
where is the iridocorneal age located?
bottom part of eye in the anterior chamber
which side of the face is the optic disc located on
the nasal side
what are the ligaments of the eye
- medial palpebral
- lateral palpebral
- tendon of LPF
- inferior tarus
- superior tarts
- orbital septum
where does the superior oblique originate from
sphenoid bone
where does the inferior oblique originate from
orbital plate of maxilla
where does LPS originate from
lesser wing of sphenoid
where is the subarachnoid space
between arachnoid matter + Pia matter
3 major functions of CSF
- mechanical protection - shock absorbing
- homeostatic function - pH affects pulmonary ventilation + cerebral blood flow, + transports hormones
- circulation - medium for minor exchange of nutrients and waste products between blood and brain tissue
what do tight junctions between brain and endothelial cells prevent
paracellular movement of molecules
symptoms of idiopathic intracranial hypertension/ pseudo tumour cerebri
headahce
visual disturbances due to pappiloedema
IIH vs hydrocephalus
IIh has no imaging features despite increase in CSF
what does aqueous humour contain
O2, metabolites and bicarbonate
what does bicarbonate do to the lens
buffers the H+ produced in the cornea and lens by anaerobic glycolysis
how to classify hypersensitivity reactions
gel and Coombs classification
