Sections View Full Chapter Figures Tables Videos Annotate Full Chapter Figures Tables Videos Supplementary Content + Differential Diagnosis of Common Causes of the Inflamed Eye Download Section PDF Listen ++ | PrintDifferential Diagnosis of Common Causes of the Inflamed Eye1Acute ConjunctivitisAcute Iritis2Acute Glaucoma3Corneal Trauma or InfectionIncidenceExtremely commonCommonUncommonCommonDischargeModerate to copiousNoneNoneWatery or purulentVisionNo effect on visionOften blurredMarkedly blurredUsually blurredPainMildModerateSevereModerate to severeConjunctival infectionDiffuse; more toward fornicesMainly circumcornealMainly circumcornealMainly circumcornealCorneaClearUsually clearSteamyChange in clarity related to causePupil sizeNormalSmallModerately dilated and fixedNormal or smallPupillary light responseNormalPoorNoneNormalIntraocular pressureNormalUsually normal but may be elevatedMarkedly elevatedNormalSmearCausative organismsNo organismsNo organismsOrganisms found only in corneal infection1Other less common causes of red eyes are noted in the text.2Acute anterior uveitis.3Angle-closure glaucoma.