Have you ever had a sudden loss of vision, but no pain? Maybe your vision was blurry, foggy, or you saw black objects floating in front of your eyes. It can be a scary thing. One of the main reasons this happens is bleeding inside the eye. In medicine, we call this a vitreous hemorrhage . Simply put, it’s blood collecting in the jelly-like part of the eye.
What is bleeding inside the eye? (Vitreous Hemorrhage)
Simply put, a vitreous hemorrhage is a bleeding in the vitreous , a fluid inside your eye. This can cause sudden, painless loss of vision in that eye. Think about it, the vitreous is the largest space inside our eye. It contains a jelly-like substance. This jelly helps the eye maintain its spherical shape.
This condition can be caused by a variety of reasons. Therefore, it is important to find the exact cause before treating it. Sometimes it can even lead to permanent vision loss, depending on the cause. This condition is especially common in people with diabetes-related retinopathy.
What are the symptoms of this?
The main symptom is sudden vision loss or blindness. Imagine, the vitreous should be like clean glass, only then can light pass through and we see. Now what happens when it gets blood? It's like a little red paint has fallen on the glass. It's obstructed from going out, and that's what causes the symptoms.
When a vitreous hemorrhage occurs, there is no visible change in the appearance of the eye. This means that the eye does not appear red from the outside. Sometimes, if the bleeding is small, or if it is located on one side of the eye, it can be difficult to detect, even for ophthalmologists, even with special equipment.
Changes in vision may include:
- Small black objects floating in front of the eyes (Floaters)
- Seeing things like spider webs
- Blurred or foggy vision
- Sometimes, you may lose all vision.
Why is there blood in the eye like this? What are the causes?
There are two main ways that blood can enter the eye. One is due to some mechanical force , and the other is due to an underlying disease .
1. Could it be caused by some accident or strong impact? (Mechanical force causes)
Yes, various physical influences can cause bleeding inside the eye. These include:
- Direct injury to the eye: Imagine you are hit in the eye by a ball while playing cricket, or something sharp sticks into your eye. This can damage the delicate blood vessels inside the eye and cause bleeding. This is the main cause in people under 40 years of age.
- Sharp movements: For example, shaking a small baby suddenly, a condition called Shaken Baby Syndrome , can cause blood vessels inside the eye to rupture and bleed.
- Interior separations: The jelly inside our eyes (the vitreous) sometimes separates from the retina at the back of the eye. This is called a posterior vitreous detachment (PVD) . When it separates, the tiny blood vessels between the two can stretch and break, causing bleeding. Sometimes the retina can tear (a retinal tear) or completely detach (a retinal detachment) . Bleeding can also occur.
- Overpressure: Sometimes when we hold our breath and try to urinate or defecate (also called the Valsalva maneuver) , the pressure inside the head and eyes can increase and cause blood vessels to burst. This can also happen when we sneeze or cough incorrectly.
2. Can this condition be caused by other diseases? (Underlying disease causes)
Yes, vitreous hemorrhage can also be caused by diseases that weaken the blood vessels inside the eye or interfere with their normal functioning. Some examples are:
- Type 2 Diabetes and Diabetes-related Retinopathy
- High blood pressure (Hypertension)
- Retinal Vein Occlusion
- Sickle Cell Disease
- Eye Cancers
- Blood diseases, for example anemia or hemophilia
- Conditions that damage blood vessels, for example , vasculitis
- Wet Age-Related Macular Degeneration, a wet type of change that occurs in the retina of the eye as we age
What complications can occur due to bleeding inside the eye?
Bleeding like this can sometimes have long-term effects on your vision . Some of these effects may be permanent, while others may take time to heal. Your eye specialist can explain what is most likely to happen in your situation and what you can do.
How do doctors diagnose this condition?
When you see an eye specialist, they will use a variety of methods to diagnose this. Most often, they can use a small instrument called an ophthalmoscope or a large machine called a slit lamp exam to see if there is any bleeding. However, they may also do other tests to find out exactly what is causing this.
What kind of tests are done for this?
Tests like these can help diagnose a vitreous hemorrhage or the conditions that cause it:
- Blood tests: These check your blood sugar levels, as well as other blood problems, such as anemia, blood clotting problems, and other blood disorders.
- Ultrasound scan: This uses sound waves to look inside the eye. This is a very important test if the doctor cannot see the inside of the eye clearly.
- Optical Coherence Tomography (OCT): This uses a low-power laser beam to take pictures of the inside of your eye. This is very useful for looking at the blood vessels and layers of the retina inside the eye.
- Brain scans: Sometimes CT scans (Computed Tomography - CT) and MRI scans (Magnetic Resonance Imaging - MRI) are done to see if there is excess pressure on the blood vessels inside the eye from the side of your brain.
What are the treatments for this? (Treatment)
There are several treatment options, and sometimes more than one of these options may be used. They are:
- Conservative treatment: This involves waiting a few days, maybe a few weeks, to see what changes occur. In most cases, our bodies can repair the damage on their own if we give them some time. During this time, you will be told to rest and avoid activities that will strain your eyes . You may also be told to sleep with your head elevated, which will help the blood drain into the back of your eye.
- Focal treatments: These methods involve repairing damaged blood vessels inside the eye or treating other problems using lasers, or using extreme heat (Photocoagulation) or extreme cold (Cryotherapy).
- Surgery: The most common surgery is a vitrectomy , which involves removing the blood- tinged jelly-like substance inside the eye and replacing it with something else (perhaps saline, silicone oil, or a special gas bubble).
- Medications: Sometimes medications (such as anti-VEGF drugs) that stop the formation of new, unwanted blood vessels (neovascularization) can be injected into the eye. This is because these new blood vessels are very fragile and can easily break and bleed again, and can further impair vision.
- Treating the underlying cause: Properly treating the underlying condition that is causing the bleeding (e.g., diabetes, high blood pressure) is very important to not only treat the current condition but also to prevent it from happening again.
Since there are many treatment options, your ophthalmologist is the best person to tell you which methods will help you the most.
What should I expect if I encounter a situation like this?
If you have bleeding inside your eye, your vision may suddenly decrease or change. But you won't feel any pain . The decrease in vision may suddenly appear as black objects floating in front of your eyes (floaters) , or as a spider web. Or your vision may become blurry or foggy.
How long will this situation last?
How long this lasts depends on many factors. The cause, the severity of the condition, and the treatment you received. It can take days, weeks, or even months for your vision to return to normal. The blood inside the eye gradually drains into the back of the eye, but it takes time. Our bodies can remove this blood, but it is a very slow process.
What is the outlook for this situation? (Outlook)
The results of this depend on the cause and how quickly you get treatment. People with long-term conditions like diabetes or macular degeneration may have slower results. The amount of bleeding also affects the results. Your eye specialist can tell you what you can do to get the best results for your condition.
Can this situation be prevented? (Prevention)
Most of the time, this happens in ways we can't predict or control. So it's impossible to completely prevent it. However, there are a few things we can do to reduce this risk:
- Wear eye protection: If you do dangerous work or play sports (e.g. squash, cricket), wearing safety glasses can help prevent eye damage from accidents.
- Get regular medical checkups: By getting a complete medical checkup from your family doctor at least once a year, you can detect diseases like diabetes and high blood pressure before you even experience symptoms.
- Control long-standing illnesses: If you have illnesses like diabetes or high blood pressure, controlling them as your doctor recommends can reduce the risk of developing this condition.
- Get regular eye exams if necessary: Especially if you have a risk condition like diabetes, get your eyes checked regularly by an eye specialist as prescribed. This way, changes inside the eye can be detected early and treated.
When should I see a doctor?
If you suddenly experience painless vision loss, blurring, or new floaters, you should see a doctor, preferably an ophthalmologist, as soon as possible.
You can't diagnose this on your own or treat it on your own. You need a trained ophthalmologist to diagnose it accurately and advise you on treatment options.
Finally, remember...
Sudden, painless loss of vision or blurred vision is a real concern. It should never be taken lightly. Early diagnosis and treatment can make a big difference. There are many treatment options.
If you have any questions about this bleeding inside the eye, called vitreous hemorrhage , or if you have a condition that increases your risk, talk to your eye doctor. He or she can explain to you what to expect and how to deal with it. Remember, your eyes are precious!
` Eyesight, Eye Bleeding, Diabetes Eyes, Eye Diseases, Sudden Vision Loss, Vitreous Hemorrhage, Eye Health
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