Sclera Anatomy Quiz

What is the main reason the sclera appears white and opaque?

What is the approximate thickness of the sclera just posterior to the rectus muscle insertions?

Which component is primarily responsible for maintaining the structure of the sclera?

Because of the coarse weave and the variation in fibril width, the sclera scatters light strongly and appears white and ______

The sclera is of variable thickness, 1 mm around the optic nerve head and 0.3 mm just posterior to the rectus muscle ______

The sclera is formed from interwoven collagen fibrils lying within a ground substance and maintained by ______

What distinguishes episcleritis from scleritis?

In rare, severe cases of episcleritis, what treatment may be helpful?

What is the usual nature of episcleritis?

Episcleritis is an inflammation at the surface of the ______

The redness caused by episcleritis is usually accompanied by mild or no ______

In rare, severe cases of episcleritis, systemic non-steroidal anti-inflammatory ______ may be helpful

What is the main cause of scleritis in almost 50% of cases?

What is the potential complication that may require scleral grafting to prevent globe perforation?

What type of treatment is typically required for severe scleritis?

______ may show diffuse or nodular swelling

Both inflammatory and ischaemic ______ occur

Non-steroidal anti-inflammatory agents may suffice in diffuse or nodular ______

Scleral grafting may be required to prevent ______ of the globe

______ affecting the posterior part of the globe may cause choroidal effusions, or may simulate a tumour

______ may be required to prevent perforation of the globe

Both inflammatory and ischaemic ______ occur

Good hygiene and hand washing is vital if contact with -------------- conjunctivitis is suspected, to prevent spread

In contact lens wearers, a painful red eye is serious; it may imply -----------

Redness, pain and reduced vision in a patient with corneal graft suggest --------------, which is an ophthalmic emergency