
Have Had A Single Red Eye In The Inner Corner. What Are The Cause And What Can Be Done?

Thanks for your concerns. The most common cause of painless red eye that does not affect visual acuity after waking up is a subconjunctival hematoma, meaning a bruising of the small vessels in the white of the eye, typically after rubbing them. A lot more common in the inside rather than the outside part of the eye. The blood and irritation gradually gets reabsorbed within 1 week; topical drops such as tetryzoline hydrochloride or similars that are over the counter can help; nevertheless, if irritation persists, there is concerning pain, visual disturbances or sensation of foreign body then an urgent care visit would be warranted to take a look with a slit lamp and fluorescein tincture (looking for example for a corneal ulcer).
Hope that helps, truly yours,
Dr Brenes-Salazar MD
Mayo Clinic MN

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