Loading...

[Emergency] Atlas of Central retinal artery occlusion (CRAO)

These are pictures of Central retinal artery occlusion (CRAO). This is a part in Fundoscopic findings of the Atlas of Emergency Medicine book


Clinical Summary

In central retinal artery occlusion (CRAO), the typical patient experiences a sudden painless monocular loss of vision, either segmental or complete. Visual acuity may range from finger counting or light perception to complete blindness. Fundal findings may include the following: fundal paleness caused by retinal edema; the fovea does not have the edema and thus appears as a cherry-red spot; narrow and irregular retinal arterioles; and a “boxcar” appearance of the retinal venules.

Management and Disposition

Attempts to restore retinal blood flow may be beneficial if performed in a very narrow time window after the acute event. This may be accomplished by (1) decreasing intraocular pressure (IOP) with topical β-blocker eye drops or intravenous acetazolamide; (2) ocular massage, applied with cyclic pressure on the globe for 10 seconds, followed by release and  then repeated. Urgent consultation with an ophthalmologist is indicated to determine if more aggressive acute therapy (paracentesis) is warranted. However, such aggressive treatment rarely alters the poor prognosis. Medical evaluation and treatment of associated findings may be warranted. Tissue plasminogen activator may be considered for lysis of an occluding thrombus.

Pearls

1. Visual decrement may be caused by a “low-flow” state (vs total occlusion). As this cannot be identified on presentation and can present hours later, immediate treatment and consultation is indicated regardless of the time of onset.
2. Sudden, painless monocular vision loss is typical.
3. CRAO may be associated with temporal arteritis. This diagnosis should be strongly considered in all patients presenting with signs and symptoms of CRAO who are older than 55 years. 

Central Retinal Artery Occlusion
FIGURE 3.10 ■ Central Retinal Artery Occlusion. The retinal pallor caused 
by retinal edema is well demonstrated, contrasting with the
“cherry-red spot” of the nonedematous fovea. Note the vascular 
narrowing and the “boxcar” appearance of the venules.  


CRAO with Cilioretinal Artery Sparing
FIGURE 3.11 CRAO with Cilioretinal Artery Sparing. “Hyperemia” 
of the fundus on the temporal side of the disc and sparing of the
macular region owing to the presence of a patent cilioretinal artery
  

Branch Central Retinal Artery Occlusion
FIGURE 3.12 Branch Central Retinal Artery Occlusion. Retinal whitening (owing to ischemia) and absence of blood flow in the inferotermporal branch retinal arteriole.  


COMMENTS

Loading...
QC5
Loading...
Name

CLINICAL ATLAS,118,DERMATOLOGY ATLAS,11,EMERGENCY ATLAS,44,HAEMATOLOGY ATLAS,23,HUMAN ANATOMY,1,MICROBIOLOGY ATLAS,66,PARASITOLOGY ATLAS,4,PATHOLOGY ATLAS,22,PEDIATRIC ATLAS,41,STDs,19,SUBCLINICAL ATLAS,116,
ltr
item
Free Medical Atlas: [Emergency] Atlas of Central retinal artery occlusion (CRAO)
[Emergency] Atlas of Central retinal artery occlusion (CRAO)
These are pictures of Central retinal artery occlusion (CRAO). This is a part in Fundoscopic findings of the Atlas of Emergency Medicine book
https://blogger.googleusercontent.com/img/b/R29vZ2xl/AVvXsEh3KHoQqRM4cr6Lms8mliKypWBhummXkkcrix7kpO-91jCb1Wpi8N7S0Zn3t5DGFIJr5DCNkVzDwu14vRxnP_R97gpm1_7TrSRjrTrxUFvE31LUlGD6mkJnYkHpJC42pZBx787bNg4QM4eZ/s400/cc3.12.jpg
https://blogger.googleusercontent.com/img/b/R29vZ2xl/AVvXsEh3KHoQqRM4cr6Lms8mliKypWBhummXkkcrix7kpO-91jCb1Wpi8N7S0Zn3t5DGFIJr5DCNkVzDwu14vRxnP_R97gpm1_7TrSRjrTrxUFvE31LUlGD6mkJnYkHpJC42pZBx787bNg4QM4eZ/s72-c/cc3.12.jpg
Free Medical Atlas
https://tuyenlab.blogspot.com/2018/04/emergency-atlas-of-central-retinal.html
https://tuyenlab.blogspot.com/
https://tuyenlab.blogspot.com/
https://tuyenlab.blogspot.com/2018/04/emergency-atlas-of-central-retinal.html
true
3150612095398522649
UTF-8
Loaded All Posts Not found any posts VIEW ALL Readmore Reply Cancel reply Delete By Home PAGES POSTS View All RECOMMENDED FOR YOU LABEL ARCHIVE SEARCH ALL POSTS Not found any post match with your request Back Home Sunday Monday Tuesday Wednesday Thursday Friday Saturday Sun Mon Tue Wed Thu Fri Sat January February March April May June July August September October November December Jan Feb Mar Apr May Jun Jul Aug Sep Oct Nov Dec just now 1 minute ago $$1$$ minutes ago 1 hour ago $$1$$ hours ago Yesterday $$1$$ days ago $$1$$ weeks ago more than 5 weeks ago Followers Follow THIS PREMIUM CONTENT IS LOCKED STEP 1: Share. STEP 2: Click the link you shared to unlock Copy All Code Select All Code All codes were copied to your clipboard Can not copy the codes / texts, please press [CTRL]+[C] (or CMD+C with Mac) to copy