In an eye with iridocyclitis, (inflammation of both the iris and ciliary body), the involved pupil will be smaller than the uninvolved, due to reflex muscle spasm of the iris sphincter muscle. These types of disruptions may be due to corneal inflammations or physical trauma to the cornea, such as a foreign body. Opacities may be keratic, that is, due to the deposition of inflammatory cells, hazy, usually from corneal edema, or they may be localized in the case of corneal ulcer or keratitis.Д¬orneal epithelial disruptions may be detected with fluorescein staining of the eye, and careful observation with cobalt- blue light.Д¬orneal epithelial disruptions would stain green, which represents some injury of the corneal epithelium. Whichever, it is always potentially serious and sometimes necessitates urgent treatment and corneal opacities are the fourth leading cause of blindness. Much more commonly, misuse of contact lenses may be a precipitating factor. In some, there is a family history of corneal growth disorders which may be progressive with age.

In rare instances, this opacity is congenital. Because of injury, infection or inflammation, an area of opacity may develop which can be seen with a penlight or slit lamp. The cornea is required to be transparent to transmit light to the retina. Reduced visual acuity ДЄ reduction in visual acuity in a 'red eye' is indicative of serious ocular disease, such as keratitis, iridocyclitis, and glaucoma, and never occurs in simple conjunctivitis without accompanying corneal involvement.Д¬iliary flush is usually present in eyes with corneal inflammation, iridocyclitis or acute glaucoma, though not simple conjunctivitis.ДЄ ciliary flush is a ring of red or violet spreading out from around the cornea of the eye. The most useful is a smaller pupil in the red eye than the non-red eye (opposite eye) and sensitivity to bright light. Pupil abormalities including abormal pupil size.Corneal abnormalities including edema or opacities ('corneal haze').Ciliary flush (circumcorneal injection).Particular signs and symptoms may indicate that the cause is serious and requires immediate attention. Hyphaema вЂ“ showing blood filling the anterior chamber, causing a horizontal fluid level.

Bloodshot eyes