Red eyes can have various causes, ranging in severity from 'worrying' to 'needs attention'. Finding the true cause means ruling out or confirming each possibility – in other words, diagnosis.
Diagnosis is usually a complex process due to the sheer number of possible causes and related symptoms. In order to diagnose red eyes, we could:
Cause | Probability | Status |
---|---|---|
Iritis | 99% | Confirm |
Conjunctivitis | 14% | Unlikely |
Sarcoidosis | 0% | Ruled out |
Dry Eye | 0% | Ruled out |
Are the whites of one or both of your eyes bloodshot (with red/pink veins showing)? Only answer if you have had bloodshot eye(s) for more than 2 days, and it is not from rubbing them.
Possible responses:
→ No / for under 2 days / from rubbing / don't know→ Significant episodes in the past → A little - they appear slightly red colored → Significantly - numerous individual red veins → Seriously - there is a large, very red area |
Dry eye may cause your eyes to always look red.