Ocular Anatomy and Conditions Flashcards
7 cards from real ABO NOCE Basic Opticianry practice questions. Tap to flip, then mark Knew It or Still Learning — missed cards come back until you master them.
Read the first 7 Ocular Anatomy and Conditions flashcards as text
Age-related macular degeneration (AMD) primarily affects which area of vision?
Answer: Central vision
AMD damages the macula, which is responsible for sharp central vision used for reading, driving, and recognizing faces.
The anterior chamber of the eye is the space between the:
Answer: Cornea and iris/lens
The anterior chamber is bounded anteriorly by the corneal endothelium and posteriorly by the iris and anterior lens surface, filled with aqueous humor.
Which condition is characterized by inward turning of the eyelid margin, causing lashes to rub against the cornea?
Answer: Entropion
Entropion is the inward rotation of the eyelid margin causing the lashes (trichiasis) to contact and potentially damage the cornea.
Hyperopia is corrected with which type of spectacle lens?
Answer: Convex (plus) lens
Hyperopia (farsightedness) is an underpowered optical system corrected by adding converging power with a convex (plus) lens.
The lacrimal gland is located in which part of the orbit?
Answer: Lateral superior orbit
The lacrimal gland sits in the lacrimal fossa in the lateral superior (superotemporal) portion of the orbit.
Which type of glaucoma involves a narrow or closed iridocorneal angle blocking aqueous drainage?
Answer: Angle-closure glaucoma
Angle-closure glaucoma occurs when the iris physically blocks the trabecular meshwork drainage angle, causing a rapid and dramatic rise in IOP.
The retinal blood supply originates from which primary vessel?
Answer: Ophthalmic artery via the central retinal artery
The central retinal artery, a branch of the ophthalmic artery (from the internal carotid), enters through the optic nerve to supply the inner retinal layers.