What are venous pulsations in the eye?

Spontaneous retinal venous pulsations (SVPs) are rhythmic variations in the calibre of one or more of the retinal veins as they cross the optic disc. SVPs may be subtle and are often limited to a small segment of only one vein.

Are venous pulsations normal?

These findings confirm that the presence of spontaneous venous pulsations is a reliable indicator of an intracranial pressure below 180 to 190 mm H2O, while the absence of pulsations may be found with normal intracranial pressure and is therefore not a reliable guide to raised intracranial pressure.

What does pulsating vision mean?

Oscillopsia is a vision problem in which objects appear to jump, jiggle, or vibrate when they’re actually still. The condition stems from a problem with the alignment of your eyes, or with the systems in your brain and inner ears that control your body alignment and balance.

What is spontaneous retinal venous pulsation?

Spontaneous retinal venous pulsation is seen as a subtle variation in the calibre of the retinal vein(s) as they cross the optic disc. The physical principles behind the venous pulsations has been the point of much debate.

How do I know if I have Papilledema?

Symptoms of Papilledema Fleeting vision changes—blurred vision, double vision, flickering, or complete loss of vision—typically lasting seconds are characteristic of papilledema. Other symptoms may be caused by the elevated pressure in the brain. Headache, nausea, vomiting, or a combination may occur.

What causes optic neuritis?

Bacterial infections, including Lyme disease, cat-scratch fever and syphilis, or viruses, such as measles, mumps and herpes, can cause optic neuritis. Other diseases. Diseases such as sarcoidosis, Behcet’s disease and lupus can cause recurrent optic neuritis. Drugs and toxins.

What is a macular star?

Optic disk edema with a macular star is a descriptive term encompassing a heterogeneous group of disorders. The clinical features include sudden visual loss, swelling of the optic disk, peripapillary and macular exudates that may occur in a star pattern, and cells in the vitreous.

Why do eyes pulsate?

Fatigue, stress, eye strain, and caffeine or alcohol consumption, seem to be the most common sources of eye twitching. Eye strain, or vision-related stress, can occur if you need glasses, a change in prescription, or are consistently working in front of a computer.

What causes fluttering in peripheral vision?

Small arc-like momentary flashes of light in the peripheral vision are commonly experienced during vitreous separation. The vitreous pulls on the retina which makes one think they are seeing a light but it is caused by the movement of the retina.

Does ocular hypertension mean glaucoma?

This condition is common in people who have hypertension or high blood pressure. It is a major risk factor for glaucoma, but does not necessarily mean you have glaucoma. Ocular hypertension just means your eye pressure is higher than normal, but you will be considered a “glaucoma suspect”.

Can optometrist see optic neuritis?

Your eye doctor can diagnose optic neuritis during a routine eye exam through a series of vision tests and looking at the structures inside your eye. Blood tests and MRIs may be ordered to check for other conditions related to optic neuritis.

Why does the macular star appear?

Neuroretinitis is characterized by an inflammation of the optic disc vasculature with exudation of fluid into the peripapillary retina. The lipid-rich component of the exudate is further able to penetrate into the outer plexiform layer, creating what is clinically seen as a macular star pattern.

What causes a macular star?

Macular star formation is caused by the deposition of lipid exudates along the outer plexiform layer of the macula. Few disorders such as neuroretinitis, hypertensive retinopathy and papilloedema are associated with lipid deposits with this peculiar pattern.

What is the pulsating Exophthalmos?

Pulsatile exophthalmos, a.k.a. pulsatile proptosis, is a clinical symptom characterized by protrusion – i.e. exophthalmos (proptosis) – and pulsation of the eyeball that can occur due to various causes: caroticocavernous fistulas. neurofibromatosis type 1 (with sphenoid wing dysplasia)