ABO Ophthalmology Complete Practice Exam 2025

Question: 1 / 400

What is the primary function of the retina?

To provide the eye's shape

To convert light into neural signals

The primary function of the retina is to convert light into neural signals, which is essential for vision. The retina contains photoreceptor cells called rods and cones that detect light and color. When light enters the eye, it is focused onto the retina, where these photoreceptors respond by changing the light energy into electrical impulses. These signals are then transmitted through the optic nerve to the brain, allowing us to perceive images.

Understanding this function is crucial because it highlights the retina's role as the initial processing center for visual information. Without this conversion process, the brain would not receive any visual signals, making it impossible to see. This function is foundational to the entire visual system and is what primarily distinguishes the retina from other structures within the eye, such as those involved in maintaining the eye's shape, controlling pupil size, or providing protection to inner eye structures.

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To control pupil size

To protect the inner eye structures

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