Ace the ABO Ophthalmology Challenge 2026 – See Your Future Shine!

The primary function of the cornea is to refract light and improve vision. The cornea, which is the transparent front layer of the eye, plays a crucial role in focusing light as it enters the eye. It has a curved shape that allows it to bend (refract) incoming light rays, directing them toward the lens and ultimately onto the retina. This process is essential for producing clear images and good visual acuity. The cornea contributes to approximately two-thirds of the eye's total optical power, making it a critical component in the visual process.

While the cornea also offers some protection to the inner structures of the eye and plays a role in maintaining the overall health of the eye, its primary role is related to light refraction and vision enhancement. The other options mention functions such as producing ocular fluid and regulating intraocular pressure, which are managed primarily by other structures in the eye, such as the ciliary body and the trabecular meshwork.