When an eye appears bloodshot the vessels that are visible are in what part of the eye? a. Scalera b. Pupil c. Aqueous Humor d. Conjunctivia Solution The answer is option a. Sclera is the white part of the eye contains collagen and elastic fiber. The vessels are visible due to swollen or dialate blood vessels on the sclera.Bloodshot eyes can develop because of overuse or because of allergies..