**Question:** A patient presented with diminished vision and neuropsychiatric manifestations and with hepatic dysfunction. His eyes on general examination and slit lamp examination appeared as shown in the Figure below. What investigation you will do next?

A. Liver function tests
B. Fundoscopy
C. Electroencephalogram (EEG)
D. Retinography

**Core Concept:**

The patient presents with a combination of symptoms including reduced vision, neuropsychiatric manifestations, and liver dysfunction. These symptoms can be indicative of various medical conditions, but in this case, we are mainly focusing on the eye and vision-related aspects. The provided figure likely illustrates the patient's eye examination findings, which could be helpful in narrowing down the possible diagnosis.

**Why the Correct Answer is Right:**

The correct answer is B. Fundoscopy because:

1. Fundoscopy is a procedure where an ophthalmologist examines the fundus (retina, optic nerve, and vitreous) using a specialized instrument called a "slit lamp" or "funduscope". This examination helps identify and diagnose various eye disorders, such as optic neuritis, retinal hemorrhages, and retinal lesions, which could be indicative of the patient's condition.

**Why Each Wrong Option is Incorrect:**

A. Liver function tests (Option A) are essential for assessing liver health and function but are not directly related to eye examination findings. While the patient has liver dysfunction, performing liver function tests alone would not be sufficient to diagnose the eye-related issues the patient is experiencing.

C. Electroencephalogram (EEG) (Option C) is an electrodiagnostic test used to assess the electrical activity of the brain. While EEG may be relevant for neuropsychiatric manifestations, it is not directly linked to eye examination findings. A fundoscopy is required to examine the patient's eyes and diagnose potential eye disorders.

D. Retinography (Option D) is an imaging test, typically used for diagnosing eye conditions. While this option is related to eye examination, fundoscopy is the appropriate test to examine the fundus, not retinography.

**Clinical Pearl:**

In clinical practice, it is vital to consider a combination of diagnostic tests tailored to the specific symptoms and signs presented by the patient. In this case, the correct answer, B (fundoscopy), is the most appropriate examination to evaluate the patient's eyes and obtain information about potential eye disorders causing the patient's symptoms and signs. Liver dysfunction and neuropsychiatric manifestations may also be addressed through additional tests, but the initial step is to focus on the patient's eye examination to diagnose the primary cause of their reduced vision and neuropsychiatric symptoms.