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https://orris.care/shared/chat/5b3a409b-8fb8-42d0-b27d-19be8…

This is a shared Orris AI chat about Acute Onset Painless Vision Loss. Here's a summary of what was covered:

Acute Onset Painless Vision Loss - Summary

The chat contains a detailed clinical guide covering the major causes, their mechanisms, findings, and management. Here are the key highlights:

Classification of Causes

CategoryLateralityMechanism
CRAOMonocularArterial occlusion - ischemia
BRAOMonocularPartial arterial occlusion
CRVOMonocularVenous stasis/thrombosis
Ischemic Optic Neuropathy (AION/PION)MonocularOptic nerve ischemia
Retinal DetachmentMonocularTractional/rhegmatogenous
Vitreous HemorrhageMonocularIntraocular bleeding
Amaurosis FugaxMonocular, transientTIA of retina
Occipital/Cortical InfarctBinocular (homonymous)Posterior circulation stroke

Key Differentiating Points

FeatureCRAOCRVOAIONRetinal Detachment
Cherry-red spotYesNoNoNo
Disc edemaNoYesYesNo
Retinal hemorrhagesRareDiffuse ("blood-thunder")Cotton-wool spotsNo
RAPDProfoundModeratePresentVariable
Key fundus signPale retina + cherry-red spotTortuous veins + hemorrhagesWhite edematous discBillowing grey retina
Systemic associationStroke/emboliHTN/DM/glaucomaGCA/vascular riskMyopia/aging/trauma

Disposition / Urgency

ConditionUrgencyAction
CRAOWithin 4-6 hoursOphthalmology + neurology; consider thrombolysis; stroke workup
A-AION (GCA)ImmediateAdmit; IV methylprednisolone; temporal artery biopsy within 1 week
NA-AIONSame-dayOphthalmology; vascular risk factor management
CRVOSame-dayOphthalmology
Retinal DetachmentWithin 24 hoursRetina specialist; surgical repair
Cortical strokeImmediateNeurology; stroke code if within 4.5 hours
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