Painless loss of vision:
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Self-assessment
1. All of the following are statements regarding retrobulbar optic neuritis are true EXCEPT:
Tends to occur in a younger population.
The patient may have associated pain on eye movement.
An underlying bacterial infection is commonly found.
A relative afferent pupillary defect is an important clinical finding.
Has an association with multiple sclerosis, more likely in females.
All of the following statements are true EXCEPT:
Flashing lights and floaters followed by an visual field defect are classic symptoms of a central retinal vein occlusion.
Compromise of the blood supply to the retina tends to be embolic in nature.
CMV retinitis may occur in any patient with a reduced immunity.
Checking for a relative afferent pupillary defect should be performed prior to instilling dilating drops.
Branch vein occlusions tend to occur where retinal veins and arteries cross.
Giant cell arteritis:
Tends to occur in patients over the age of 55.
Loss of vision may initially be transient but can become permanent.
Reduced blood supply to the optic nerve is believed to be the cause of vision loss.
An elevated ESR is helpful but temporal artery biopsy is necessary to confirm the diagnosis.
All of the above.
Painless loss of vision:
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