Ophthalmoscopy
Arteriovenous nicking (Dx) - ANS-Compression of venule by means of arteriole inflicting vein to
bulging in both facet; visible in Hypertensive retinopathy.
Commonest purpose is persistent hypertension.
Usually observed within five disc diameters from optic disc on ophthalmoscopy.
Branch Retinal Artery Occlusion - ANS-Disruption of vascular perfusion in branch of the CRA,
main to focal retinal ischemia.
Mainly due to embolism from cholesterol, calcification, platelet-fibrin plugs.
Obstruction normally at bifurcation of retinal arteries.
S&S: sudden, unilateral, painless/partial imaginative and prescient loss, with visual field illness
similar to region of occlusion.
Possible hx of AF/CVA/TIA; focal wedge shaped place of retinal whitening.
Refer to ophthalmologist urgently if imaginative and prescient loss came on recently.
Further embolization inflicting stroke may be coming near near.
CRAO more not unusual than BRAO.
Congenitally elevated optic disc anomaly - ANS-Optic disc elevation gift from start.
Probably caused by small scleral starting in order that optic nerve axons are tight in shape.
Usually does now not disturb imaginative and prescient.
Appearance:
No physiologic cup.
No optic disc surface haemorrhages or cotton wool spots.
Dome-formed in preference to doughnut-fashioned optic disc elevation, feature of papilledema.
Optic disc drusen every now and then appear on optic disc surface (calcified mitochondria
extruding from axons).
What to do:
Refer non-urgently to ophthalmologist is isolated locating in asymptomatic affected person.
Refer urgently if patient has signs to indicate vision loss or multiplied ICP.
, Congenitally increased optic disc elevation with drusen may be associated with visual view loss
that may be innovative.
Copper wiring, silver wiring - ANS-Thickening of walls of retinal arterioles from chronic high
blood pressure.
Appearance:
Retinal arterioles:
Orange/yellow in preference to purple - copper wiring.
White (occluded) - silver wiring.
Cotton wool spots - ANS-White spots on retinal surface as a result of microinfarction.
Usually do now not produce vision loss until massive or near fovea.
Causes:
Hypertension, diabetes, HIV, lupus, excessive anemia or thrombocytopenia, hypercoagulable
states, connective tissue problems, viruses, lues, Behçet, Purtscher...
Refer to ophthalmologist non-urgently if incidental locating, urgently if associated with active
contamination or new imaginative and prescient loss.
Myelinated nerve fibres - ANS-White patches on retinal surface that often surround optic disc.
Congenital anomaly in which retinal nerve fibers are mistakenly myelinated.
Does no longer interfere with imaginative and prescient.
Old retinal vascular occlusion - ANS-White, thready retinal vessels that look like twisted pipe
cleaners. No retinal edema to suggest latest infarction.
Causes: (many)
Hypertension, connective tissue sickness, Behçet ailment, sarcoidosis.
Optic disc pallor - ANS-Whiteness of optic disc neuroretinal rim on ophthalmoscopy. Sign of
demise of optic nerve axons. Appears weeks to months after axons have died.
Delayed prognosis may lead to irreversible blindness. Refer non-urgently.
(In everyday eyes, physiologic cup in center of optic disc appears white, but neuroretinal rim
seems orange on ophthalmoscopy)
Papilledema - ANS-Swelling of optic disc due to accelerated intracranial pressure.
Vision generally everyday or near regular until atrophy has set in.
Patient may additionally report transient black-outs of imaginative and prescient, specifically
upon status.
Arteriovenous nicking (Dx) - ANS-Compression of venule by means of arteriole inflicting vein to
bulging in both facet; visible in Hypertensive retinopathy.
Commonest purpose is persistent hypertension.
Usually observed within five disc diameters from optic disc on ophthalmoscopy.
Branch Retinal Artery Occlusion - ANS-Disruption of vascular perfusion in branch of the CRA,
main to focal retinal ischemia.
Mainly due to embolism from cholesterol, calcification, platelet-fibrin plugs.
Obstruction normally at bifurcation of retinal arteries.
S&S: sudden, unilateral, painless/partial imaginative and prescient loss, with visual field illness
similar to region of occlusion.
Possible hx of AF/CVA/TIA; focal wedge shaped place of retinal whitening.
Refer to ophthalmologist urgently if imaginative and prescient loss came on recently.
Further embolization inflicting stroke may be coming near near.
CRAO more not unusual than BRAO.
Congenitally elevated optic disc anomaly - ANS-Optic disc elevation gift from start.
Probably caused by small scleral starting in order that optic nerve axons are tight in shape.
Usually does now not disturb imaginative and prescient.
Appearance:
No physiologic cup.
No optic disc surface haemorrhages or cotton wool spots.
Dome-formed in preference to doughnut-fashioned optic disc elevation, feature of papilledema.
Optic disc drusen every now and then appear on optic disc surface (calcified mitochondria
extruding from axons).
What to do:
Refer non-urgently to ophthalmologist is isolated locating in asymptomatic affected person.
Refer urgently if patient has signs to indicate vision loss or multiplied ICP.
, Congenitally increased optic disc elevation with drusen may be associated with visual view loss
that may be innovative.
Copper wiring, silver wiring - ANS-Thickening of walls of retinal arterioles from chronic high
blood pressure.
Appearance:
Retinal arterioles:
Orange/yellow in preference to purple - copper wiring.
White (occluded) - silver wiring.
Cotton wool spots - ANS-White spots on retinal surface as a result of microinfarction.
Usually do now not produce vision loss until massive or near fovea.
Causes:
Hypertension, diabetes, HIV, lupus, excessive anemia or thrombocytopenia, hypercoagulable
states, connective tissue problems, viruses, lues, Behçet, Purtscher...
Refer to ophthalmologist non-urgently if incidental locating, urgently if associated with active
contamination or new imaginative and prescient loss.
Myelinated nerve fibres - ANS-White patches on retinal surface that often surround optic disc.
Congenital anomaly in which retinal nerve fibers are mistakenly myelinated.
Does no longer interfere with imaginative and prescient.
Old retinal vascular occlusion - ANS-White, thready retinal vessels that look like twisted pipe
cleaners. No retinal edema to suggest latest infarction.
Causes: (many)
Hypertension, connective tissue sickness, Behçet ailment, sarcoidosis.
Optic disc pallor - ANS-Whiteness of optic disc neuroretinal rim on ophthalmoscopy. Sign of
demise of optic nerve axons. Appears weeks to months after axons have died.
Delayed prognosis may lead to irreversible blindness. Refer non-urgently.
(In everyday eyes, physiologic cup in center of optic disc appears white, but neuroretinal rim
seems orange on ophthalmoscopy)
Papilledema - ANS-Swelling of optic disc due to accelerated intracranial pressure.
Vision generally everyday or near regular until atrophy has set in.
Patient may additionally report transient black-outs of imaginative and prescient, specifically
upon status.
