Reading...
Play button
Play button
Use LEFT and RIGHT arrow keys to navigate between flashcards;
Use UP and DOWN arrow keys to flip the card;
H to show hint;
A reads text to speech;
22 Cards in this Set
- Front
- Back
|
what % of vitreous is water
|
99%
|
|
|
where is the vitreous base
|
pars plana, peripheral retina
|
|
|
a vitreous detachment where is called a weiss ring
|
optic disc margin
|
|
|
where is the weakest connection for the vitreous
|
macula
|
|
|
what is the central vitreous canal called
|
cloquets canal
|
|
|
what is syneresis
|
shrinkage with inward collapse of vitreous
|
|
|
what percentage of people ages 66-86 have syneresis
|
66%
|
|
|
is syneresis increased in myopes or hyperopes
|
myopes
|
|
|
what are asteroid hyalosis spots made of
|
calcium soaps
|
|
|
is asteroid hyalosis unilateral or bi
|
unilateral 90% of the time
|
|
|
what are the symptoms of asteroid hyalosis
|
Asymptomatic
|
|
|
what is asteroid hyalosis associated with
|
diabetes, htn, vascular dz
|
|
|
what is it called if you see free floating flat crystals of cholesterol bilaterally
|
synchysis scintillan
|
|
|
what is the sign called if you see pigmented cells in the vitreous
|
shaffers sign
|
|
|
two types of vitreous hemorrhages
|
intravitreous and retrovitreous
|
|
|
what will th pt complain of if they have a PVD
|
sudden onset of flashes and floaters, vertical lighting streaks, blurry vision, red hue, possible metamorphopsia
|
|
|
75% of eyes with PVD will have what type of membrane
|
epiretinal membrane AKA macular pucker
|
|
|
why does an epiretinal membrane form
|
result of proliferation onto ILM of retinal glial cells that have escaped through dehiscences of ILM with subsequent contraction on cellular membrane
|
|
|
epiretinal membrane could result in what kind of macular problems
|
macular edema or full thickness macular hole
|
|
|
what are the four categories of vitreous detachments
|
complete PVD with collapse
complete PVD without collapse incomplete PVD with collapse anterior vitreous detachment |
|
|
what % of people with PVD will have a RD
|
10% usually at the time of the PVD but may be delayed weeks to months
|
|
|
how do you tx a pt with a RD
|
advise them about the s/s of RD
DFE w/ depression RTC 1-4 weeks then 1 month later retina refer if break noted |
