Intermediate Sclera Quiz

Q1. Which layer forms the outermost vascular connective tissue covering of the sclera?

• Episclera
• Retinal pigment epithelium
• Choroid
• Lamina fusca

Q2. Which layer forms the main thickness of the sclera?

• Conjunctival epithelium
• Episclera only
• Lamina fusca only
• Scleral stroma

Q3. What is the lamina fusca?

• The retinal nerve fiber layer
• The capsule surrounding the lens
• The transparent anterior corneal layer
• The pigmented inner scleral layer adjacent to the choroid

Q4. Why is the sclera less transparent than the cornea?

• Its collagen is irregularly arranged and scatters light
• It contains photoreceptors that absorb all light
• Its fibers are arranged in perfectly regular lamellae
• It is filled with aqueous humor

Q5. What is the lamina cribrosa?

• A perforated posterior scleral region traversed by optic nerve axons
• A ligament suspending the lens
• A layer between the corneal epithelium and stroma
• A membrane covering the pupil

Q6. Which vessels perforate the sclera posteriorly to supply the choroid and related structures?

• Posterior ciliary arteries
• Middle meningeal arteries
• Superficial temporal arteries
• Facial arteries

Q7. Which nerves pierce the sclera and travel within the suprachoroidal region toward anterior ocular structures?

• Facial nerve trunk
• Ciliary nerves
• Chorda tympani
• Greater occipital nerves

Q8. Where is the sclera generally thinnest?

• At the center of the cornea
• At the optic disc only
• Just posterior to the rectus muscle insertions
• At the iris root

Q9. What connective tissue type predominates in the scleral stroma?

• Elastic cartilage
• Dense irregular connective tissue
• Hyaline cartilage
• Reticular epithelium

Q10. What separates the sclera from the choroid over much of the globe?

• Subarachnoid space of the brain
• Suprachoroidal space
• Vitreous chamber
• Anterior chamber