ABO Exam Prep - Anatomy Questions and Answers 100% Verified

Also produces a liquid that soothes and lubricates the eye. These secretions combine with those from the Meibomian glands to make up the eyes tear - Lacrimal Caruncle A transparent dome shaped layer that sits in front of the eye and lets light enter through - Cornea Acts as a protective barrier of the Cornea - Bowman's Membrane Actual location is behind the eyelid or palpebra and along the sclera. It is where the two layers of the conjunctiva meet and join. - Fornix All the rays of light entering the eye all focus on the retina right where they need to be to provide crisp sight without the need of corrective lenses - Emmetropia An error of refraction in which a ray of light is not sharply focused on the retina, but is spread over a more or less diffuse area; it is due to differences in curvature in the refractive surfaces (cornea and lens) of the eye. football shaped cornea instead of spherical - Astigmatism Another term for eyelid - Palpebrae Anterior Chamber Posterior Chamber Vitreous Chamber - What are the three fluid-filled chambers in the eye? Astigmatism that in which one principal meridian is hyperopic and the other myopic. - Mixed AstigmatismBoth principal meridians are either hyperopic (compound hyperopic astigmatism, with rays coming into focus behind the retina) or myopic (compound myopic astigmatism, with rays coming into focus in front of the retina) - Compound Astigmatism Closes the iris - Sphincter Muscle colored ring of muscle that contracts & expands to change the size of the pupil - Iris Cones require brighter light to function than rods do; Discriminate colors. About 6 million in Fovea - Cones Consists of the iris, the choroid, and the ciliary body and is responsible for nourishment - Vascular Tunic Consists of the sclera and the cornea. - Fibrous Tunic Contract; Thinner - When ciliary body relaxes, the zonules ________, drawing the lens outward, making the lens _______, and allowing the eye to focus at distance. Epithelium Bowman's Membrane Stroma Descemet's Membrane Endothelium - 5 Distinct Cornea Layers Memory Hint: B comes before D and think "end" for last layer. Eye looks down. Attaches directly to bottom of the eye and runs straight back. - Inferior RectusEye looks up. Attaches directly to the top of the eye and runs straight back. - Superior Rectus Eye rolls, looks down and to the side. Attaches under the superior rectus, passes through a bony spur known as the Trochlea, and then follow the path of the superior rectus. The raised attachment point provides the muscle the ability to give the eye rotation. - Superior Oblique Where the cornea blends into the sclera - Limbus Eye rolls, looks up and to the side. Attaches along the lateral side of the eye and runs under the eye passing over the inferior rectus and attaches medially. - Inferior Oblique A bony spur that the Superior Oblique passes through and attaches under the superior rectus - Trochlea Farsightedness caused by loss of elasticity of the lens of the eye; occurring typically in middle and old age; Prescriptions for presbyopia will show corrections for distance, if required, and the additional notation of an add power as in one of these examples: Add +2.50 Add +1.25 - Presbyopia fbrous strands connecting ciliary body and lens - Zonules Focuses light on the retina. Sits just behind the pupil. - Crystalline Lens In laymans terms, the "whites of your eyes." It is the thick, tough, fibrous layer that provides the structure of the entire eyeball - Sclera