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Doctor insights on: Causes Of Retinal Vein Occlusion

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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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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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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

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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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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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What causes thrombosis of the coronary arteries?

What causes thrombosis of the coronary arteries?

Arterioclerosis: Arteriosclerosis or plaque buildup in the wall of the coronary arteries will narrow the lumen to the point where there is flow restriction, then clot formation. The plaque may rupture, allowing a flap-like effect, blocking the lumen, resulting in clot formation. Trauma may cause a separation of the layers of the wall, and this dissection results in clot formation. ...Read more

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

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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What are the causes of deep vein thrombosis?

What are the causes of deep vein thrombosis?

Multiple.: There are many causes for DVT but all causes revolve around 3 factors: stasis of blood, injury to the vessel wall or increased propensity to clot(hypercoagulabe state). Stasis occurs with long trips or immobility due to illness or casts. Injuries to the vein wall can occur with trauma from something within the vein or external to it .Hypercoagulable- increased risk of clotting -genetic/acquired. ...Read more

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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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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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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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What causes multiple bilateral pulmonary emboli thrombosis of the pelvic veins?

What causes multiple bilateral pulmonary emboli thrombosis of the pelvic veins?

Few things: Recent surgery, prolonged immobilization, long distance traveling, cancer, and smoking cause traditional DVTs. If bilateral veins are compressed, an organ like the uterus can compress the veins but you will probably suffer from large fibroids . Blood disorders or other abnormal masses can also cause a mechanical compression at a higher location than both those veins. Emboli can reach both lungs. ...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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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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Diagnosed with chronic radial artery occlusion due to thrombus. Is there any risk of an embolism happening.

Diagnosed with chronic radial artery occlusion due to thrombus.  Is there any risk of an embolism happening.

No risk: Radial artery occl are rare and are usually self limiting more common now withradial artery procedures and lines but they usually dont embolize ulnar artery supplies hand then. ...Read more

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Result of venous duplex scan for dvt. Evidence of peroneal veins with partially occlusive non acute dvt. Evidence of recanalisation and both paired veins are patent and small due to the DVT present?

Result of venous duplex scan for dvt. Evidence of peroneal veins with partially occlusive non acute dvt. Evidence of  recanalisation and both paired veins are patent and small due to the DVT present?

I guess you: Are asking, what does it mean. You had sometime ago a partial DVT that still allowed blood flow, new vessels help with the flow. Still at risk of further DVT specially if sitting for prolonged periods od time. ...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 are the causes of coronary artery blockage?

What are the causes of coronary artery blockage?

Several: There are a number of risk factors that lead to plaque in the coronary arteries which is the reason for the blockage. Some of these are smoking, high blood pressure, unhealthy diet, an abnormally high cholesterol, lack of exercise, and obesity. There are also hereditary factors. ...Read more

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What is the risk of retinal detachment after pvd?

What is the risk of retinal detachment after pvd?

10-15%: The risk of retinal break, tear, or detachment after posterior vitreous detachment (PVD) is thought to be around 10-15%. This is why patients should have a dilated fundus examination if they experience new onset flashes, floaters, or change in vision. ...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

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What causes thrombosis of the superficial dorsal vein of the penis? (The main prominent penis vein)

What causes thrombosis of the superficial dorsal vein of the penis? (The main prominent penis vein)

Blocking blood flow: Use of "cock rings" , cords, or other types of devices that block the flow of blood through the vein for a prolonged time is the most probable cause. There are also blood clotting disorders such as anti cardiolipin antibodies that iincrease the risk of clotting. Inflammation from an infection can also cause clotting/thrombosis. ...Read more

Dr. Thomas Fiala
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. Sheila Smith
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