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Photopsia is the presence of perceived flashes of light in the field of vision. It is most commonly associated with: [4] posterior vitreous detachment; migraine aura (ocular migraine / retinal migraine) migraine aura without headache; scintillating scotoma; retinal break or detachment; occipital lobe infarction (similar to occipital stroke)
During this detachment, the shrinking vitreous can stimulate the retina mechanically, [9] causing the patient to see random flashes across the visual field, sometimes referred to as "flashers", a symptom more formally referred to as photopsia. The ultimate release of the vitreous around the optic nerve head sometimes makes a large floater ...
A ring of floaters or hairs just to the temporal side of the central vision; As a posterior vitreous detachment proceeds, adherent vitreous membrane may pull on the retina. While there are no pain fibers in the retina, vitreous traction may stimulate the retina, with resultant flashes that can look like a perfect circle. [citation needed]
Floaters appear when the vitreous, the gel-like substance that gives your eye its round shape, shrinks and forms clumps or strands. Howard R. Krauss, MD, a surgical neuro-ophthalmologist at ...
Floaters suddenly appearing in the field of vision or a sudden increase in the number of floaters. Floaters may resemble cobwebs, specks of dust, or shapes such as ovals or circles; Flashes of light in vision ; Experiencing a "dark curtain" or shadow moving from the peripheral vision toward the central vision; Sudden blurred vision
Vitreous hemorrhage is the extravasation, or leakage, of blood into the areas in and around the vitreous humor of the eye. [1] The vitreous humor is the clear gel that fills the space between the lens and the retina of the eye.
Visual snow syndrome (VSS) is an uncommon neurological condition in which the primary symptom is that affected individuals see persistent flickering white, black, transparent, or colored dots across the whole visual field.
It received praise for brevity, being only 39 pages, and lacking the illustrations which had graced its predecessors. Like the NHS Plan 2000 with which Stevens was also associated it was supported by the great and good of the NHS, but in this case it was regulators - Monitor, the Care Quality Commission and the like, rather than the Royal Colleges and Trades Unions of the earlier plan.