Certified Ophthalmic Assistant Test 2025 – 400 Free Practice Questions to Pass the Exam

Question: 1 / 400

What type of illumination is preferred for photographing external eye structures?

Point source

Direct

Diffuse

The preferred type of illumination for photographing external eye structures is diffuse illumination. This method provides a soft, even light that reduces harsh shadows and highlights, allowing for better visualization of the details and contours of the eye. Because diffuse illumination scatters light, it diminishes glare and reflections, leading to clearer images that accurately depict the anatomy of the external eye structures.

In contrast, point source illumination can create sharp shadows and a high-contrast effect that may obscure important details. Direct illumination might also result in glare or harsh reflections, making it difficult to capture a clear image. Reflected illumination, while useful in certain contexts, can introduce additional complexity and may not provide the consistency needed for detailed photography required in ophthalmic assessments. Hence, diffuse illumination is the most suitable option for this purpose.

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