Retinal detachment - A curtain coming down on your vision

Have you ever heard of a condition called retinal detachment?

We hope so, but if you're like most people you probably haven't. Even if you have heard of it, do you know what the symptoms are? Most people don't know but much like a heart attack, retinal detachments are considered medical emergencies and require immediate treatment to prevent permanent vision loss so let's make sure you know what to watch for!

"... a retinal detachment happens when a part of the retina pulls away from the underlying tissue. It can happen to anyone"

Let's start by understanding what a retinal detachment really is. Essentially, a retinal detachment happens when a part of the retina pulls away from the underlying tissue. Fairly quickly, that tissue dies since it is unable to get the oxygen and other nutrients it needs to survive. If left untreated it will usually spread and the entire retina will detach. Since we need our retina to see, if it fully detaches we lose the ability to see with that eye and unfortunately can't get it back. Caught early, it can be treated and stop the vision loss in its tracks

Who is at risk for a retinal detachment? Unfortunately, everyone. Some people have a higher risk, such as people with high nearsighted prescriptions or people with a family history of retinal detachment, but anyone with eyes can have their retina detach. Your retina may detach after an eye injury or accident but that's not required for a retinal detachment to occur.

This is what a detached retina looks like when your doctor looks inside your eye. It's not something we want to see!

So how do you catch and stop a retinal detachment? Well, the main thing is to have regular, dilated eye examinations. That helps your doctor of optometry check your peripheral retina for any problems like thin areas or retinal holes. Sometimes though your retina will look perfect and you still end up with a retinal detachment! So what then?

"Retinal detachments cause flashing lights, floating spots, curtains waving in your vision or a combination of all three!"

Most retinal detachments are highly symptomatic. People experience flashing lights, floating spots, a curtain waving in their vision or a combination of all three! There are many eye disorders that have similar symptoms including things that are relatively harmless like posterior vitreous detachment and ocular migraines but because a retinal detachment is so serious (meaning you can go totally blind)  it's important to have your doctor confirm the diagnosis. Don't try to make that judgment yourself. It's not worth the risk

If you have questions about retinal detachments or anything else feel free to contact us on TwitterFacebookGoogle +, via our website or phone us at (403) 474-6744.

Floaters - Those annoying spots moving around in your vision

One of the most commonly asked questions I get asked  is "What are those things I see floating around in my vision." Most people don't think my answer of 'annoying' is nearly as funny as I do and usually would like a real answer about what is happening. So let's address a problem almost everyone experiences at some point in their life, the visual phenomenon known as floaters.

First of all, what are they? To understand that you need to know a bit about the vitreous jelly, which fills most of the eye and is where floaters form. The vitreous jelly is almost entirely water but it does have a matrix of 'stuff' (collagen and hyaluronic acid to be exact) that gives it a jelly like consistency. Don't think of it as jello though, it's more like an egg white. When we're really young the vitreous is really clear and everything is pretty much perfect. Over time though the jelly starts to break down and water leaks away. The collagen and hyaluronic acid are left behind and they clump forming the black or clear jelly blobs that we see moving around in our vision. What we are seeing is really just a shadow caused by these clumps. Floaters are easiest to see when the lighting is bright and the background is a light colour (so a bright sunny day with a blue sky or a brightly lit, white computer screen).

Floaters sort of look like this... but not really.

So, what can be done about a floater? Honestly, not much. The most effective therapy is something called a vitrectomy where they literally remove the entire jelly from your eye and replace it with a silicone oil or a saline solution. This is an extremely risky solution and I don't know a single retinal specialist that is willing to do this surgery on someone for floaters. There is a laser procedure as well that blasts the floaters.  This is a better solution than a vitrectomy but doesn't work as well. Many patients report that instead of having a few large floaters they now have a lot of small ones.

Why should we care about floaters? Often we don't. The odd floater moving around in your vision is certainly annoying but it isn't harmful. There are situations though where floaters are a huge concern:

  • You get a large number of new floaters all at once,
  • With those new floaters you also experience a flashing light in your peripheral (side) vision like a camera or lightning flash AND/OR
  • With those new floaters you notice a curtain waving in and out of your vision.

Any of those could mean that your retina has a tear or has detached. Retinal detachments are medical emergencies and can lead to complete loss of vision in hours. Retinal tears aren't quite as urgent but usually lead to a retinal detachment so you don't really want to mess around with them either.

Really, it's best to play it safe. If you have floaters and aren't sure if they were there before or you aren't sure if they're normal floaters come in for a dilated eye exam. We'll put drops in your eyes for this type of exam (which is fully covered by Alberta Health Care) to have the best possible look at the very far outer edges of your retina to make sure there aren't any problems. If something is wrong we will get you to a retinal specialist as quickly as possible and keep your vision safe.

If you have any questions about this or anything else feel free to contact us on TwitterFacebookGoogle +, via our website or phone us at (403) 474-6744.

For more information check out these links:

All About Vision - Floaters

Ask a Doctor of Optometry - Floaters