Vision
Problems: Spots & Floaters
Do you occasionally see specks or threadlike strands drifting across
your field of vision? Then, when you try to look at them, do they seem
to dart away? If so, you're seeing what eye care practitioners call
spots or floaters.
While
almost everyone sees a few spots at one time or another, they can
occur more frequently and become more noticeable as you grow older. If
you notice a sudden change in the number or size of spots, you should
contact us right away so you can be sure they are not the result of a
more serious problem.
What are
spots or floaters?
Spots are small, semi-transparent or cloudy specks or particles within
the eye that become noticeable when they fall within the line of
sight. They may also appear with flashes of light.
The inner
part of your eye is made up of a clear, jelly-like fluid known as the
vitreous. As time passes the jelly-like fluid gradually becomes more
liquid in nature and cells and structural fibres detach and float
around in this jelly, resulting in the floaters that we commonly
observe.
When
flashes of light occur causing spots to become noticeable, it can be a
result of the jelly-like vitreous shrinking and pulling on the retina.
This tugging action stimulates the retinal receptor cells to "fire,"
causing the perception of light flashes.
Can these
spots cause blindness?
Most spots are normal and rarely cause blindness. But spots can
indicate more serious problems. If you notice a change in the number
and size of spots, a comprehensive eye examination is in order to
determine the cause.
On rare
occasions, vitreous detachment can cause small tears or holes in the
retina. The damaged part of the retina subsequently does not work
properly and a blind or blurred spot in vision results. If untreated,
retinal tears or holes can continue to worsen and severe vision loss
can result if the retina becomes detached.
How are
spots diagnosed?
In a comprehensive eye examination, your eyes will be evaluated with
special instruments that allow an examination of the health of the
inside of your eyes and possible observation of the spots.
This is
often done after special drops are put in your eyes to make the pupils
larger (called dilation) to allow a larger view of the inside of your
eyes. These procedures provide the relevant information to detect
spots.
How are
spots treated?
While flashes and floaters are normally not serious or treatable, they
can be symptoms or signs of either vitreous or retinal detachment. In
either of these cases, treatment with lasers and/or surgical
intervention may be necessary to preserve your vision. If you notice a
sudden increase or change in the number and type of spots and
floaters, contact us immediately.
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