Bruising (Hematoma) in the Conjunctiva in cats
When to visit the vet?
Non-urgent see a veterinarian within 2–3 days
Orange/red if there is trauma to the eye, visual impairment, severe Pain, or additional signs of bleeding (petechiae, Bleeding gums)
Unsure about what’s wrong with your pet? Feel free to use our Symptom Checker for more clarity
Definition
A bruising (hematoma) in the conjunctiva in cats is an accumulation of blood under the thin, transparent membrane that covers the eye. This membrane is called the conjunctiva, and a hematoma in this area can be triggered by various causes affecting the eye or surrounding area.
Can Occur with the Following Diseases:
Basics and possible causes
The conjunctiva is a thin mucous membrane that covers the inside of the eyelids and the front of the eyeball up to the cornea. It protects the eye from the environment and helps keep it moist. A hematoma in this area occurs when blood vessels in or around the conjunctiva are damaged, leading to bleeding.
Bruising in the conjunctiva can be caused by traumas, such as a blow to the eye or head. Blunt force, such as from falls, fights with other animals, or accidents, are also common triggers. Other possible causes include high blood pressure, blood coagulation disorders, infections, or inflammatory diseases that affect the blood vessels in the conjunctiva.
Certain systemic diseases such as hypertension (high blood pressure) or thrombopathies (blood coagulation disorders) can also lead to bruising in the conjunctiva. These diseases affect the integrity of the blood vessels or the Tendency to bleed of the body and can therefore cause Bleeding even without external influences.
Typical accompanying symptoms
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Redness of the eye: A noticeable sign is an unusual redness of the eye, caused by the accumulation of blood in the conjunctiva.
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Swelling: The affected area may appear swollen because the blood is trapped in the tissue.
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Pain or discomfort: The cat may show signs of pain by closing or rubbing the affected eye more often.
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Change in behavior: Some cats may appear irritated or withdrawn due to the pain or discomfort.
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Tearing: Increased tearing may occur as the eye tries to eliminate the blood accumulation.
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Reluctance to move: In some cases, the cat may want to move less, especially if the hematoma was caused by a trauma that causes Pain.
When to visit the vet?
A visit to the vet is urgently needed if the cat shows signs of pain or the eye is severely swollen and red. A veterinarian should also be consulted immediately if the animal cannot open its eye or shows signs of visual impairment.
If the hematoma occurs without an obvious injury, it could be a sign of a more serious underlying condition, such as high blood pressure or a blood coagulation disorder. In such cases, a veterinary examination is essential to identify and treat the underlying cause.
Another warning sign is if the hematoma does not get smaller after a few days or even gets bigger. This could indicate persistent bleeding or another complication that requires medical intervention.
Symptom recognition for animal owners and veterinary diagnostic procedures
Pet owners can recognize a hematoma in the conjunctiva by paying attention to the symptoms described above, especially a sudden redness or swelling of the eye. It is important to observe the cat’s behavior to recognize signs of pain or discomfort.
During a veterinary visit, the vet will first take a thorough medical history and ask about possible causes for the trauma. A physical examination, especially of the affected eye, will be performed to assess the extent of the hematoma and any accompanying injuries.
The veterinarian may also order blood tests to identify systemic causes such as blood coagulation disorders or high blood pressure. In some cases, diagnostic imaging such as an ultrasound or X-ray may be necessary to determine the exact cause of the hematoma.
What can pet owners do and professional therapy options
At home, pet owners can take some measures to relieve the cat’s discomfort and prevent it from getting worse. It is important to prevent the cat from rubbing or scratching the affected eye. A protective collar can be helpful to prevent this.
A cool compress can be gently placed on the closed eye to reduce swelling. Care should be taken to ensure that no pressure is exerted on the eye to avoid further damage.
It is important to keep the cat in a quiet environment to avoid stress, which could worsen the symptoms. Pet owners should also make sure that the cat does not participate in activities in which it could injure itself again.
Medications or eye drops should only be administered after consulting a veterinarian, as improper use could worsen the condition. If the veterinarian prescribes medication, it should be administered exactly as directed.
Outlook on current research
Current research is increasingly focused on understanding the exact mechanisms that lead to the development of bruising in the conjunctiva in cats. Scientists are particularly investigating the role of coagulation disorders and the effects of trauma or pressure on the sensitive blood vessels in the eye. There is evidence that genetic factors may play a role in influencing susceptibility to such bruising. Studies are trying to identify specific genetic markers that could increase the risk. In parallel, the role of environmental factors, such as diet and lifestyle, is being investigated to understand how these might influence the occurrence of hematomas in the conjunctiva.
Another area of research focuses on the development of new diagnostic procedures to determine the cause of conjunctival hematomas more precisely. This includes the application of advanced diagnostic imaging techniques such as Optical Coherence Tomography (OCT), which provides a detailed view of the eye structure and can help to detect subtle changes early on. Work is also being done to improve blood coagulation tests to obtain more accurate results that help identify underlying systemic problems.
In addition, research is being conducted to investigate how different treatment methods affect the healing of bruising in the conjunctiva. Both pharmacological approaches that affect blood coagulation and physical therapies that are intended to promote blood circulation and healing are being evaluated. New drugs are being tested in preclinical studies that specifically target the reduction of bruising while minimizing side effects. The results of these investigations could lead to new treatment protocols that shorten recovery time and improve the well-being of affected cats.