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Doctor insights on: Causes Of Central Retinal Vein Occlusion

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Please help! what is the incidence of bilateral central retinal vein occlusion?

Please help! what is the incidence of bilateral central retinal vein occlusion?

Not common: Bilateral CRVO is not common. Bilateral CRVO has been associated with hyperviscosity syndromes such as primary and secondary polycythemia, leukemia/lymphoma, multiple myeloma, and other rare conditions. Other risk factors include oral contraceptive use, diuretics, hypercoagulable states, and vasculitis. ...Read more

Obstruction (Definition)

Anything that creates a blockage of the intestinal tract. You may think of the intestinal tract (stomach, small bowel, large bowel) as somewhat akin to a garden hose. If you kink the garden hose, or twist it, or block it inside, you have created an "obstruction". Most obstructions are a results of previous surgery and most of these ...Read more


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Can MS cause central vein occlusion?

Can MS cause central vein occlusion?

Must disagree: This is a bandwagon that seems trendy, but the overwhelming evidence so far suggests that the blocks in the jugular and azygous veins draining into the neck, can be seen in normals as well as ms patients, and there is absolutely no backup congestion blood products found in the brain. This is a risky and absolutely unnecessary procedure, in spite of numerous advocates. No effect on ms. ...Read more

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Describe retinal vein occlusion?

Describe retinal vein occlusion?

Eye vessel problem: Retinal vein which drains the blood out of the eye gets occluded. This causes blurryness of vision, sometimes loss of vision. It can come suddendly. Elevated blood pressure and patients with diabetes are some of the risk factors. New treatments are available to control some of the problems due to closure of blood vessels in the eye. ...Read more

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What are the differences between ischaemic optic neuropathy and retinal artery occulsion?

What are the differences between ischaemic optic neuropathy and retinal artery occulsion?

Difficult to answer: If one distinguishes between anterior and posterior ischemic optic neuropathy this is easier to answer as the former is almost always caused by giant cell arteritis and treated with prednisone and the latter is due to systemic atherosclerosis. Acute central retinal artery occlusion may be caused by carotid occlusion or dissection or cardioembolic events. Treatment includes hyperbaric O2. ...Read more

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In open angle glaucoma is optic atrophy a symptom of glaucoma attacking the central vision?

In open angle glaucoma is optic atrophy a symptom of glaucoma attacking the central vision?

Glaucoma: when glaucoma attacks the optic nerve the initial loss is usually peripheral vision. If not controled the loss will increase and proceed to involve the central vision. ...Read more

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Why retinal detachment causes curtain effect from top down of vision?

Location: the visual defect produced by a retinal detachment depends on the location of the detachment ...Read more

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Is a branch retinal vein occlusion could be a sign of MS ?

Don't think so: Optic neuritis is typically associated with ms. Brvo is associated with hypertension, or certain blood clotting disorders, depending on your age. ...Read more

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Causes of retina detachment?

Many possible causes: As we age, the vitreous may pull away from its attachment to the retina at the back of the eye. If the vitreous pulls hard enough to tear the retina in one or more places, fluid may pass through, lifting the retina off the back of the eye, causing it to detach. Some risk factors for detachment are: nearsightedness, trauma to the eye or a family history of retinal detachment. ...Read more

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Can optic nerve head drusen cause sudden unilateral loss of peripheral vision due to a spontaneous vascular event?

Can optic nerve head drusen cause sudden unilateral loss of peripheral vision due to a spontaneous vascular event?

Disc Drusen: I am not aware of any association between optic nerve drusen and sudden unilateral vision loss from a vascular event. A vascular event should be evaluated and treated the same as if the disc drusen were not there. ...Read more

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Does blockage in arteries of retina cause vision loss?

Does blockage in arteries of retina cause vision loss?

See a retina special: Yes. Lack of blood flow due to a retinal artery occlusion can cause severe loss of vision from damage to the retina. A central retinal artery occlusion is worse than a branch retinal artery occlusion. There are no good treatments, but a systemic workup looking for an embolic source is required (carotid ultrasound, echocardiogram). A rarer cause is giant cell arteritis. ...Read more

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What is the difference between optic neuropathy and retinal artery occulsion?

What is the difference between optic neuropathy and retinal artery occulsion?

Related issues: Optic neuropathy is a generic term referring to damage to the optic nerve from any cause including trauma, decreased blood flow, or genetic disease. Retinal artery occlusion is a blockage in the artery feeding the retina, which leads to damage or death of the retinal nervous tissue. A central retinal artery occlusion can cause an optic neuropathy. ...Read more

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What is the cure for retinal vein occlusion?

What is the cure for retinal vein occlusion?

There is no cure: There are only treatments to treat the effects: intravitreal injections and/or laser for macular edema (swelling), laser for proliferative changes (new blood vessel growth), and vitrectomy surgery for vitreous hemorrhage. See a retina specialist. ...Read more

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Problem in vision of right eye after diagnosis of pvd/ is that due to floaters or retinal tear now?

Problem in vision of right eye after diagnosis of pvd/ is that due to floaters or retinal tear now?

Could be: Could be tear, or simply you are appreciating the PVD more. If this is a change since you last saw the ophthalmologist, see him promptly. ...Read more

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What causes impaired circulation which in turn cause thinning of the retina(lattice degeneration) ?

Lattice Degeneration: Is not likely caused by impaired circulation. The cause is not known. It occurs frequently in very near-sighted people and may be a risk factor for retinal detachment. ...Read more

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What is a posterior subcapsular cataract and ischemia of the optic nerve?

What is a posterior subcapsular cataract and ischemia of the optic nerve?

2 different things: There are many types of cataract. Posterior subcapsular cataract refers to cloudiness on the back part of the lens just under the capsule. This may be caused by injury, steroids, elevated blood sugar and aging. Ischemia of the optic nerve means that there is or was an episode of poor blood flow to the nerve which may result in vision loss. ...Read more

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What is a posterior subcapsular cataract and ischemia of the optic nerve?

What is a posterior subcapsular cataract and ischemia of the optic nerve?

2 different things: Posterior subcapsular cataract is a change in the lens transparency from deposits and alteration of the back capsule of the lens. Ischemia of the optic nerve is deficiency of the blood supply to the main nerve of sight with loss of vision. ...Read more

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During posterior vitreous detachment, the vitreous separates from the macula first or peripheral retina or no preference?

Generally peripheral: Vitreous degeneration, the conversion of the vitreous gel into a dense syrup, usually starts peripherally and eventually involves the center including the macula. In most cases it is a benign and normal event but if adhesions exist, then the retinal can lift up and tear or become detached. ...Read more

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What are the common symptoms of a renal artery occlusion?

What are the common symptoms of a renal artery occlusion?

No common symptoms: This problem is most commonly found, without symptoms, during testing for high blood pressure. The common causes are chronic occlusion from atherosclerosis or hyperplasia of the artery. Acute embolic occlusion may result in severe flank pain. This is uncommon. ...Read more

Dr. Patricia Foster
6 doctors shared insights

Occlusion (Definition)

This refers to how the teeth come together. There are 3 classifications: normal or class i, an excessive overbite or class ii, and an ...Read more


Dr. Dariush Saghafi
3 doctors shared insights

Retina (Definition)

That lines the inner eyeball that turns light into chemical/electrical signals interpreted by brain which we ...Read more