I have a small white dot on the edge of my iris its irritated with redness in a line from the dot to bottom of my eye. its been 2 days it itches.

Staph Margin Infiltr: A staphylococcal marginal infiltrate is the most likely diagnosis fitting your description, but a phlyctenule is also possible. SMI is associated with eyelash dandruff (blepharitis) so washing your eyelids and lashes might help with natural healing. See an ophthalmologist for a complete eye examination. If inside the eye, an iris cyst is possible, and a visit to an EyeMD will clarify the diagnosis