American Board of Ophthalmology (ABO) Practice Exam 2025 – The Complete All-in-One Guide to Exam Success

The primary function of the vitreous body is to maintain the shape of the eye. The vitreous body is a gel-like substance that occupies the space between the lens and the retina, providing structural support to the eye and contributing to its overall shape. This is crucial for maintaining the proper geometry of the eye, which ensures that light entering the eye can correctly focus on the retina.

The vitreous body also plays a role in stabilizing the retina by holding it in place against the choroid, thus preventing retinal detachment. While the vitreous does have some minimal role in light transmission, its main purpose is not optical focus, as that is primarily the role of the cornea and lens.

In contrast, other choices pertain to functions that are not related to the vitreous body. For instance, color perception is primarily managed by photoreceptors in the retina, focusing light is a function of the cornea and lens, and the production of aqueous humor is the responsibility of the ciliary body, not the vitreous body. Therefore, maintaining the shape of the eye is the most accurate response regarding the function of the vitreous body.