Comment on 'Clinical features and outcomes of HLA B27 positive and HLA B27 negative acute anterior uveitis in a Turkish patient population'.
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Biomedical subjects
Publications and source records attributed to Narciss Okhravi.
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Two cases are reported of intraocular inflammation in which severe vitritis hampered the fundal view, making an accurate clinical diagnosis impossible, and vitreous analysis using conventional techniques was unhelpful. PCR for Toxoplasma gondii was positive in both cases and provided the only way of confirming the diagnosis. Other ocular samples also underwent PCR for Toxoplasma DNA and the specificity of this approach is demonstrated.
Cystoid macular edema (CME) can cause profound visual loss and is one of the major causes of legal blindness in patients with uveitis. It can complicate virtually any type of acute or chronic, anterior or posterior uveitis. When mild and of short duration, CME may respond to treatment used to control the intraocular inflammation. However, patients may need more aggressive treatment with local and systemic steroid therapy and other immunosuppressive drugs. Unfortunately, CME may become refractory to all currently available therapies and result in severe visual loss.
Scleritis is typically a severe painful inflammatory process centered in the sclera that may involve the cornea, adjacent episclera, and underlying uvea; it poses a significant threat to vision. Careful clinical history taking, detailed ocular examination, appropriate investigation for ocular disease with or without underlying systemic disease, and timely intervention with the use of immunosuppressant drugs when necessary, has improved the long-term outcome for patients with this disease.
Metastatic or endogenous endophthalmitis (EE) is a serious consequence of systemic sepsis. It is defined as intraocular infection resulting from haematogenous spread of organisms in which the initial focus of infection is at a site distal to the eye. A red/sore eye in a patient with a known septic focus needs urgent attention as EE can be a major cause of visual loss. Early diagnosis and treatment are associated with better visual outcome. This article focuses on the two main causes of EE, namely bacterial and fungal infections, and also briefly mentions dissemination of cytomegalovirus to the eye in immunocompromised patients. Although conscious patients may notice an ocular problem, unconscious or very sick patients may not; vigilance by medical staff in looking for early signs of this is extremely important.