The appearance of flashing lights comes from the pulling of the vitreous gel on the retina at the time of vitreous separation. What you see are the shadows these clumps cast on the retina, the light-sensitive nerve layer lining the back of the eye. As we get older, the vitreous (the clear gel-like substance that fills the inside of the eye) tends to shrink slightly and detach from the retina, forming clumps within the eye. They appear to be in front of the eye but are actually floating inside. Floaters can look like cobwebs, squiggly lines, floating bugs, or simply a blurry spot that moves. In most cases, floaters are part of the natural aging process. Most people have some floaters but are bothered by them to varying degrees. They tend to be more obvious as you look at a blank wall or a clear blue sky. What is depression? A Mayo Clinic expert explains.Floaters are small specks or clouds moving in your field of vision.Depression and anxiety: Can I have both?.Clinical depression: What does that mean?.Antidepressants: Which cause the fewest sexual side effects?.Antidepressants: Selecting one that's right for you.Antidepressants: Can they stop working?.Antidepressants and weight gain: What causes it?.Antidepressants and alcohol: What's the concern?.Antidepressant withdrawal: Is there such a thing?.Any new changes in vision also should be checked by your provider. These symptoms would suggest a more serious cause of your visual symptoms, and you should see a provider right away. New weakness on one side of the body or speech changes.Onset of headaches or changes in vision later in life (after the age of 50).Visual changes that last less than five minutes and more than 60 minutes.If you have visual symptoms that have not previously been evaluated by a health care provider, you should see a provider if you have any of the following: So if you experience visual loss in one eye, be sure to see a health care provider right away for prompt treatment. It's generally caused by some other, more serious condition. But usually, loss of vision in one eye isn't related to migraine. These bouts may precede or accompany a headache.Ī retinal migraine - unlike a migraine aura - affects only one eye, not both. Retinal migraine involves repeated bouts of short-lasting diminished vision or blindness. Ocular migraine sometimes is used as a synonym for the medical term "retinal migraine." A retinal migraine is a rare condition occurring in a person who has experienced other symptoms of migraine. But migraine with aura isn't usually considered serious. These symptoms can temporarily get in the way of certain activities, such as reading or driving. A migraine aura involving your vision will affect both eyes, and you may see: Aura can sometimes occur without a headache.Ī migraine aura that affects your vision is common. The auras usually last for about five minutes to an hour. If the wave of activity goes through other areas of the brain such as the sensory or language centers, then the person would have sensory (for example, tingling in the tongue, face or arm) or language auras. It's thought that auras are usually visual because such a large portion of the brain processes visual information. About 90% of people who have migraine with aura have this type. The most common type of aura is a visual aura. The location of the wave of activity in the brain determines the type of aura. Migraine aura is a wave of activity in the brain traveling through the brain. When visual changes are only in one eye, they could signal something serious and require immediate treatment. Retinal migraine is extremely rare, and the visual changes are in only one eye. Most commonly the term "ocular migraine" had been used to describe what is now called migraine with aura.
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