posted by admin on Apr 2
Floaters and flashes are signs that the vitreous humor, the gelatinlike substance filling the space between the retina and the lens, is aging. In the early part of your life, the vitreous humor is clear, but the aging process makes it appear opaque in certain spots, which can cause vision problems. Many people begin to feel the effects of vitreous humor decay and shrinkage by the time 50 or 60 rolls around.
One form of vitreous humor degeneration causes tiny clumps to detach from the retina and float freely inside the eye’s fluid. These microscopic specks cast shadows on the retina, and you see them as “floaters.” Both nearsighted people and those who have had cataract surgery are especially vulnerable to floaters, but the problem seems to affect the over-50 population in general.
Floaters are certainly annoying but are usually nothing to worry about. The bad news is that there’s really no cure for ordinary floaters, and they occasionally may get in the way of reading. The good news is that you can expect them to disappear over time.
However, if your floaters come in heavy showers accompanied by flashing lights, you may have a detached retina, and the shower of floaters may be a sign of retinal bleeding. If this is followed by fixed dark spots, you may already have retinal scarring. See your ophthalmologist immediately if you experience these symptoms. A detached retina can be repaired through laser surgery as long as you take care of the problem quickly.
Flashes originate because the vitreous humor starts out like Jell-0 but becomes more liquified as the years pass. This change weakens the bond between the vitreous humor and the retina. In this weakened state, eye movements can tug at the vitreous humor, stimulating the retina automatically and causing you to see brief flashes of light. The flashes you see will be fleeting and probably confined to one eye. Be careful not to confuse this sensation with steady glare, a benchmark symptom of cataracts.
If you see flashes in both eyes that last for 10 to 20 minutes and are accompanied by pain, you’re probably suffering from a migraine headache.
If the flashes are accompanied by a loss of vision or another change in your visual acuity, especially if your field of vision seems as though it is covered by a veil, make an appointment with your ophthalmologist immediately. These may be signs of a detached retina.
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