Can you get pink eye in only one eye?

Yes, it is possible to get pink eye in only one eye. Although it is more common for both eyes to be affected, some cases of pink eye only affect one eye. This can happen due to specific factors such as:

1. Viral or Bacterial Infection: Certain viral or bacterial infections can cause one eye to become infected while sparing the other. For instance, adenoviruses, which cause various respiratory illnesses like the common cold, can also cause pink eye. If the virus enters only one eye, it may lead to pink eye in that eye alone.

2. Allergic Reaction: In cases where an allergic reaction triggers pink eye, it is possible for only one eye to be affected. For example, if an allergen like pollen or dust comes into contact with one eye, it may cause inflammation and pink eye in that particular eye.

3. Contact Lens Use: Wearing contact lenses can sometimes increase the risk of pink eye, particularly if proper hygiene practices are not followed. If a contact lens is not cleaned or replaced regularly, it can harbor bacteria or allergens, leading to pink eye in the eye that wears the contact lens.

4. Trauma or Injury: Injury or trauma to one eye, such as a scratch from a sharp object or chemical splash, can also cause pink eye in that particular eye.

5. Stye: A stye, which is an infected oil gland in the eyelid, can lead to pink eye if the infection spreads to the surface of the eye. If a stye develops in only one eye, it may cause pink eye in that eye alone.

However, it's essential to note that if you experience pink eye in only one eye, it's still important to seek medical attention. The underlying cause needs to be identified and appropriately treated to prevent complications and ensure proper healing of the affected eye. Some forms of pink eye, particularly those caused by certain bacteria, are highly contagious and can easily spread to the other eye if not managed promptly.