vision loss Flashcards
what is the leading cause of blindness
cataracts
cataracts symptoms
gradual, painless, hazy vision, blindness
surgery for cataracts
phacoemulsification surgery
ARMD
age related macular degeneration
ARMS symptoms
only central vision affected - blurred, distorted, holes/ gaps
types of ARMD
dry type
wet type
dry type ARMD symptoms and tx
gradual
no tx
wet type ARMD symtpoms and tx
fast onset and progression of loss of central vision
anti-VEGF injections
what nerve does glaucoma affect
condition of the optic nerve - gradual loss of axons
types of glaucoma
chronic open angle
acute closed angle
chronic open angle glaucoma
peripheral vision affected first then central
mostly asymptomatic
tx - pressure lowering eye drops
acute closed angle glaucoma
red, painful eye, unreactive pupil, severe headache, unwell
retinal detachment symptoms
flashing lights, floaters
shadow in corner of vision
painless
retinal detachment tx
urgent surgery (<2 days)
what is the absolute do not for eye surgery
inhalation sedation
giant cell arteritis
vasculitis, branches of external carotid
a true medical emergency
giant cell arteritis signs to dentist
jaw/ tongue pain
tender scalp skin
headache
feeling rotten
losing weight
vision disturbance
how does diabetes effect the eyes
sugary blood is toxic to blood vessels
what eye conditions may be linked to diabetes
retinopathy
maculopathy
proliferative retinopathy effects
vitreous haemorrhage (bleeding)
retinal detachment (scarring)
maculopathy
swelling
sugary blood damaged vessels lead to
haemorrhages
oedema (at the macula)
3 effects of diabetic retinopathy
sugary blood damaged vessels
retinal ischaemia
new vessels grow into vitreous (proliferative retinopathy)
