What can be caused by bacterial, fungal, viral, and parasitic infections affecting the posterior chamber of the eye?

The condition caused by bacterial, fungal, viral, and parasitic infections affecting the posterior chamber of the eye is posterior uveitis. This type of uveitis specifically involves inflammation of the uveal tract, which includes the choroid and retina at the back of the eye and can be triggered by various infectious agents.

In posterior uveitis, inflammation can lead to significant visual impairment if not promptly diagnosed and treated. Infections such as toxoplasmosis (a parasitic infection), viral infections (like cytomegalovirus), and others can specifically target this area, resulting in symptoms that include blurred vision, floaters, and in some cases, pain or redness if the disease progresses.

Other conditions, such as conjunctivitis, primarily affect the anterior portion of the eye, notably the conjunctiva, and are usually not associated with infections in the posterior segment. Corneal abrasion pertains to the surface layer of the eye (the cornea) and does not relate to infections in the posterior chamber. Iridocyclitis involves inflammation of the iris and ciliary body but does not typically encompass the posterior segment in the same way posterior uveitis does. The inflammation in iridocyclitis is more localized compared to the broader implications seen