Sections View Full Chapter Figures Tables Videos Full Chapter Figures Tables Videos Supplementary Content ++ | 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. Your MyAccess profile is currently affiliated with '[InstitutionA]' and is in the process of switching affiliations to '[InstitutionB]'. Please click ‘Continue’ to continue the affiliation switch, otherwise click ‘Cancel’ to cancel signing in. Get Free Access Through Your Institution Learn how to see if your library subscribes to McGraw Hill Medical products. Subscribe: Institutional or Individual Sign In Username Error: Please enter User Name Password Error: Please enter Password Forgot Username? Forgot Password? Sign in via OpenAthens Sign in via Shibboleth