Can Eating Sea Snails Lead to Eye Infections? the Risks - Internal Medicine

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Possibility of infection


Hello doctor, while having dinner, my brother accidentally squirted water from a conch shell into my eyes and face.
Although I was wearing glasses, could the bacteria be Vibrio species and potentially infect my eyes? Or if it’s cooked, would it be okay? My brother says I'm overreacting...

Qiqi, 10~19 year old female. Ask Date: 2020/10/23

Dr. Hong Yuanbin reply Internal Medicine


Hello, theoretically, cooking seafood significantly reduces the risk of infection.
You can rinse your eyes with saline solution or eye drops and continue to observe.
If you later experience redness, swelling, or pain in your eyes, you should see an ophthalmologist.
Thank you for your question.

Reply Date: 2020/10/23

More Info


When it comes to the risk of eye infections from exposure to sea snails or any seafood, it's important to understand the nature of the potential pathogens involved and the circumstances of exposure. In your case, the concern arises from the splash of water that may contain bacteria from the sea snail, particularly Vibrio species, which are commonly associated with marine environments.

Firstly, let’s clarify what Vibrio species are. There are several types, including Vibrio cholerae, Vibrio parahaemolyticus, and Vibrio vulnificus. These bacteria can be found in marine environments and are often associated with seafood, especially when it is raw or undercooked. However, cooking seafood typically kills these bacteria, significantly reducing the risk of infection.

In your situation, since the sea snail was cooked, the likelihood of any harmful bacteria being present in the water that splashed into your eyes is quite low. Cooking seafood at high temperatures effectively kills most pathogens, including Vibrio species. Therefore, if the water that splashed onto your face and eyes came from properly cooked sea snails, the risk of infection is minimal.

Moreover, the eye has a protective barrier in the form of the corneal epithelium, which is quite resilient. If there was no direct injury to the eye (like a scratch or cut), the chances of developing an infection are further reduced. The eye can tolerate minor irritants without leading to infection, especially if you did not experience any immediate discomfort or symptoms such as redness, swelling, or discharge.

However, it is essential to monitor for any signs of infection in the following days. Symptoms to watch for include:
1. Redness: If the white part of your eye becomes red or inflamed.

2. Itching or Burning: Any persistent discomfort that feels unusual.

3. Discharge: Any unusual discharge from the eye, which could indicate an infection.

4. Vision Changes: Blurriness or other changes in vision.

If you experience any of these symptoms, it is advisable to seek medical attention promptly. An eye care professional can provide a thorough examination and appropriate treatment if necessary.

In summary, while it is understandable to be concerned about potential infections from exposure to seafood, the risk in your case appears to be very low due to the cooking process of the sea snail. Maintaining good hygiene, such as washing your hands before touching your face or eyes, can further reduce the risk of infections. If you have any ongoing concerns or develop symptoms, do not hesitate to consult a healthcare provider for peace of mind and proper care.

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