When you notice red and sore eyes, it is important to identify where the redness and pain in the eyes are located. If the redness and pain is on the surface of the eye, there are several possibilities to consider, namely conjunctivitis, keratitis, anterior uveitis, and patients with glaucoma and glaucomatous ciliary syndrome. Whether pathogenic or allergic conjunctivitis can cause congestion, foreign body sensation, burning-like sensation and pain in the eye. Physical examination can reveal bulbar conjunctival congestion, which can be accompanied by proliferation of papillary follicles, along with secretions of a different nature. Anti-allergic and anti-pathogenic treatment is given, and systemic medication is administered if necessary. Patients with keratitis may have ocular pain, foreign body sensation, photophobia, lacrimation, and lesion changes of different shapes on the cornea. Patients with anterior uveitis can have mixed congestion, lens pressure pain as well as anterior chamber clouding and reactive pupil narrowing. Patients with glaucoma have pain, photophobia, tearing, mixed congestion, dilated pupils, and increased intraocular pressure. Patients with glaucoma syndrome have mild mixed congestion, a lambda-like KP can be seen in the anterior chamber, and the pupil can be mildly dilated with increased intraocular pressure.