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red sclera
When the normally white part of the eyes are red.
Not to be confused with red eyes, which is when the irises (the part of the eye that is colored) are red, or with red pupils, which is when the pupils (the black center part of the eye) are red, or bloodshot eyes, when the eyes are irritated.
Examples
See also
This tag implicates colored_sclera (learn more).
