The investigations of anterior uveitis fora 25 years old boy are all except:
**Question:** The investigations of anterior uveitis in a 25-year-old boy are all except:
A. Complete blood count (CBC)
B. Serum electrolytes
C. Full blood count (FBC)
D. Serum biochemistry
**Core Concept:** Anterior uveitis is a type of uveitis, which is an inflammation of the uvea (the middle layer of the eye made up of the iris, ciliary body, and choroid). Inflammation in the anterior uvea can be due to various causes, including infectious, autoimmune, or post-operative complications. Investigations in such cases are essential to determine the underlying cause and guide appropriate management.
**Why the Correct Answer is Right:** Inflammatory conditions in the anterior uvea often require specific investigations to diagnose and treat the cause accurately. The correct answer (A, C, and D) refers to general laboratory tests that are non-specific for uveitis and may reveal elevated inflammatory markers or electrolyte imbalances, but do not directly address the eye inflammation.
**Why Each Wrong Option is Incorrect:**
A. **Complete blood count (CBC)**: CBC provides information about the number and types of cells in the blood. While elevated white blood cell (WBC) count is a nonspecific sign of inflammation, it does not directly address the eye inflammation.
C. **Full blood count (FBC)**: FBC, similar to CBC, is a general investigation that provides information about the number and types of cells in the blood. While an elevated WBC count can be a nonspecific sign of inflammation, it does not specifically address the eye inflammation.
D. **Serum biochemistry**: This investigation includes blood glucose, renal function tests (RFTs), liver function tests (LFTs), and electrolytes. While these tests can reveal organ dysfunction or electrolyte imbalances associated with systemic diseases, they do not directly assess the eye inflammation.
**Clinical Pearl:** In cases of suspected anterior uveitis, a complete ophthalmic examination, including slit-lamp biomicroscopy, fundoscopy, and intraocular pressure measurement, should be performed. These clinical evaluations can reveal important clues about the presence and severity of the uveitis, allowing for more specific investigations to be ordered if necessary.
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**Core Concept:** Anterior uveitis investigations should focus on evaluating the eye inflammation and its potential causes.
**Why the Correct Answer is Right:**
A. **Ocular examination**: A comprehensive ophthalmological examination is essential to assess the ocular manifestations of uveitis, including slit-lamp biomicroscopy, fundoscopy, and intraocular pressure measurement. These examinations can help identify signs and symptoms of inflammation and guide further specific investigations if necessary.
**Why Each Wrong Option is Incorrect:**
B. **Full blood count (FBC)**: An FBC test provides information about the number and types of cells in the blood, but it does not directly assess eye inflammation.
C. **Renal function tests (RFTs)**: RFTs assess kidney function