Conjunctiva Disorders MCQs

Ophthalmology · 29 free questions with answers & explanations.

1. A neonate develops profuse purulent conjunctivitis 3 days after birth. The discharge is thick yellow-green and copious. Gram stain shows gram-negative diplococci inside polymorphs. The causative organism and recommended treatment are:
2. A patient from a trachoma-endemic region has corneal pannus superiorly and superior tarsal conjunctival follicles. Herbert's pits (limbal follicle scars) are present. According to WHO trachoma grading (FISTO), which stage does this represent?
3. A 22-year-old atopic patient presents with severe itching, photophobia, ropy mucus discharge, and cobblestone papillae on the upper tarsal conjunctiva, along with a Trantas dot at the limbus. This is most consistent with:
4. A recurring fleshy, triangular, vascularised growth on the nasal conjunctiva extending 2 mm onto the cornea is present in a 50-year-old outdoor worker. He asks about treatment. The preferred surgical technique to minimise recurrence is:
5. A 7-year-old child from a rural area presents with bilateral tarsal conjunctival scarring (Arlt's lines), Herbert's pits at the limbus, and corneal pannus formation. The WHO grading for this patient would include:
6. A 5-year-old child presents with itching, photophobia, mucoid discharge, and 'cobblestone' papillae on the upper tarsal conjunctiva. There are also gelatinous Trantas dots at the limbus. Corneal complications include shield ulcer. This presentation is consistent with which form of allergic conjunctivitis, and the key difference from atopic keratoconjunctivitis (AKC)?
7. In trachoma, the WHO grading system TF (trachomatous inflammation-follicular) is defined as:
8. Vernal keratoconjunctivitis (VKC) is associated with which specific corneal complication that distinguishes it from other allergic conjunctivitis and may threaten vision?
9. In severe ocular cicatricial pemphigoid (OCP), conjunctival biopsy shows direct immunofluorescence with linear deposits of IgG and C3 at the basement membrane zone. The HLA type associated with the most severe progressive form of OCP is:
10. Seasonal allergic conjunctivitis differs from vernal keratoconjunctivitis in its immunopathological mechanism in that SAC involves primarily which type of hypersensitivity without a T-cell late-phase component?
11. A child with giant papillae under the upper tarsal conjunctiva, limbal Horner-Trantas dots, and a shield ulcer on the superior cornea is diagnosed with vernal keratoconjunctivitis. The mechanism of shield ulcer formation is:
12. Chlamydial trachoma causes blindness primarily through which sequence of pathological changes?
13. Ligneous conjunctivitis is a rare chronic pseudomembranous conjunctivitis associated with deficiency of which protein?
14. In cicatricial pemphigoid with ocular involvement, the primary immune mechanism differs from pemphigus vulgaris in that it involves:
15. Trachoma staging by the WHO simplified grading system (1987): 'Trachomatous Trichiasis (TT)' refers to:
16. In trachoma, the World Health Organization's SAFE strategy uses which classification for grading active disease? Grade TF (Trachomatous Inflammation-Follicular) requires:
17. Ligneous conjunctivitis is a rare form of chronic pseudomembranous conjunctivitis caused by deficiency of which factor, leading to fibrin accumulation?
18. In vernal keratoconjunctivitis (VKC), the 'shield ulcer' of the cornea occurs due to:
19. In ocular cicatricial pemphigoid (OCP), forniceal scarring leads to symblepharon formation. The pathological mechanism differs from Stevens-Johnson syndrome because in OCP:
20. Trachoma, caused by Chlamydia trachomatis serotypes A, B, Ba, and C, is graded using the WHO simplified grading system. The stage associated with the HIGHEST risk of corneal blindness due to entropion and trichiasis is:
21. A 5-year-old boy from a rural area has photophobia and intense itching in both eyes. Slit-lamp examination reveals giant cobblestone papillae on the upper tarsal conjunctiva, limbal Horner-Trantas dots, and shield ulcer on the superior cornea. The diagnosis is vernal keratoconjunctivitis (VKC). The limbal Trantas dots represent:
22. Trachoma grading by WHO simplified system (TF, TI, TS, TT, CO) — which grade is the direct indication for surgical intervention?
23. Spring catarrh (vernal keratoconjunctivitis) most characteristically causes which corneal complication?
24. A 22-year-old presents with recurrent seasonal bilateral red eye with intense itching, photophobia, and large cobblestone papillae on the upper tarsal conjunctiva. Corneal examination shows a Tranta's dot at the limbus and a shield ulcer at the superior cornea. This is vernal keratoconjunctivitis (VKC). The MOST appropriate management for the corneal shield ulcer is:
25. Inclusion conjunctivitis caused by Chlamydia trachomatis serotypes D–K (oculogenital type) differs from trachoma (serotypes A–C) in that:
26. A 10-year-old boy presents with recurrent bilateral intense itching, photophobia, and a ropy discharge. Slit-lamp examination reveals giant papillae (cobblestone appearance) on the upper tarsal conjunctiva bilaterally and Horner-Trantas dots at the limbus. The diagnosis is:
27. A 25-year-old sexually active patient presents with acute mucopurulent conjunctivitis. Gram-stained conjunctival scraping shows intracellular Gram-negative diplococci. What complication is most feared if untreated?
28. A 22-year-old presents with intense bilateral itching, ropy mucoid discharge, and giant papillae (> 1 mm, cobblestone appearance) on the upper tarsal conjunctiva. He has atopic dermatitis. Which type of conjunctivitis is this and what is the hallmark immunological mediator?
29. The PATHOGNOMONIC slit-lamp finding in vernal keratoconjunctivitis (VKC) that distinguishes it from all other forms of allergic conjunctivitis is: