What structure maintains the overall shape of the eye?

What structure maintains the overall shape of the eye?

• A. Ciliary Body
• B. Vitreous Humor
• C. Cornea
• D. Sclera

Answer: (B)

The structure that defines and holds the eyeball's shape is the sclera, the tough outer coat that forms the globe’s exterior and provides rigidity. This shell keeps the internal contents in place and anchors the eye muscles, so the eye remains roughly spherical. The vitreous humor fills the main internal cavity and helps maintain internal pressure and support the retina, but it doesn’t set the globe’s external shape as the sclera does. The cornea contributes to the front surface and focusing, but it is only part of the front, not the overall shape of the eye.

The structure that defines and holds the eyeball's shape is the sclera, the tough outer coat that forms the globe’s exterior and provides rigidity. This shell keeps the internal contents in place and anchors the eye muscles, so the eye remains roughly spherical. The vitreous humor fills the main internal cavity and helps maintain internal pressure and support the retina, but it doesn’t set the globe’s external shape as the sclera does. The cornea contributes to the front surface and focusing, but it is only part of the front, not the overall shape of the eye.