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.