I'm sorry to hear about your eye injury. A red eye after being hit can be due to irritation, minor injury, or swelling. Here are some steps you can take:

• Avoid rubbing your eye to prevent further irritation or damage.
• Rinse your eye gently with clean, lukewarm water if you feel any foreign particles or discharge.
• Apply a cold compress (like a clean cloth soaked in cold water) on the closed eyelid to reduce swelling and discomfort.
• Avoid using any eye drops without consulting a doctor, especially since some require prescriptions and may not be suitable for all injuries.

Since your eye is red after trauma, it is important to have it evaluated by an ophthalmologist (eye specialist) promptly to rule out any serious injury such as corneal abrasion or internal damage.

If you experience any of the following, seek emergency care immediately:

• Severe pain
• Vision changes or loss
• Persistent redness or discharge
• Sensitivity to light

Please consult an ophthalmologist for a thorough examination and appropriate treatment. If needed, they may prescribe suitable eye drops or other interventions based on the injury.To narrow down potential causes, we will need some more information.I understand that you're concerned about your red eye after being hit. Could you please provide your age and gender?