Which statement best describes the sclera?

Study for the Visual Impairment Education Certification Test. Explore multiple choice questions, with hints and explanations for each. Prepare thoroughly!

The sclera is the tough, fibrous outer coat of the eye that provides protection and helps maintain the eyeball’s shape. This white, durable layer encases the eye and gives it structural integrity, which is why describing it as the protective outer structure that helps keep the eye’s shape is the best fit. The other roles listed belong to other parts: the eye’s refractive power mainly comes from the cornea (and the lens for focusing), light entry is guided by the cornea and lens (with the iris controlling how much light enters), and light absorption by the retina is done by the photoreceptors and pigment layers, not the sclera.