sudden visual loss Flashcards
what is retinal detachment?
neurosensory layer of retina detaches from the pigment epithelum
most preceded y posterior vitreous detachment causing traction on retin and detachment as liquid is underneath
there is irreversible visual loss
rf FOR retinal detachment
fhx
myopia
history of previous
age
symptoms and signs
flashes floaters visual field loss macula detachment would show reduced acuity altered red reflex reduced visual fields and RAPD RELX
anagement
laser photocoagulation
what is posterior vitreous detachment
detachment of the posterior hyoid face from of vitreous body from eurosensory retina
key feasture
most common cause of flashes and floaters
black specks
ocular flashes
PAINLESS
rf
age short sighted family history uvetis trauma 50 -70th decate previous eye surgery
key sign
thickened posterior surface as pulled away -Weiss ring
management
not needed unless retinal tear
what is vitreous haemorrhage
who causes
blood leaks into vitrous uour into eye diabetes most common cause
eye trauma
60 plus
bleeding from new blood vessels
retinal tear and trauma
symptoms
hazy vision or visual loss
red tintint
floaters haze shadows cobwebs
management
laser photocogulatin and anti vegf
what is macular degeneration
degeneration of the macula
can cause changes to acuity
divided into wet and dry
what is seen in dry
drusen- yellow products - loss of photoreceptors slow progression atrophy of retinal pigment eithleium less dramatic
wet
new BV formation and bleed loss of vision dramatic and can be sudden scarring white regins fluid accomutaton secondary to new vessel formation
