Abstract: Intraocular fluid testing is a laboratory examination used in the diagnosis of certain intraocular inflammatory diseases or in the investigation of relevant factors associated uveitis. The specific examinations and their indications of intraocular fluid testing as well as explanation of the test results obtained are described in detail in this paper. The abused employment of intraocular fluid testing and misunderstanding of these results become a serious problem right now in clinical practice. In general, the diagnosis of uveitis is a clinical one and principally based on history taking, meticulous clinical examination and, if necessary, relevant auxiliary examinations. Intraocular fluid testing is useful only in the diagnosis of endophthalmitis, masquerade syndrome associated with malignancies, ocular toxoplasmosis and ocular toxocariasis. Extensive and indiscriminate intraocular fluid testing used in searching for underlying origins or causes of uveitis is a wasteful practice, frequently leading to misdiagnosis and mistreatment, and sometime puts patients at risk to development of intraocular infection.

Key words: uveitis, intraocular fluids analysis, diagnosis