This is a real-world medical entrance exam question, please give the true answer based on the question and selection. Topic name: Conjuctiva, Subject name: Ophthalmology
Cobblestone conjunctivitis is seen in - 
Select and explain. 
A. Spring Cattarrh, B. Phylctenular conjunctivitis, C. Inclusion conjunctivitis, D. Giany papillary conjunctivitis
A: Spring Cattarrh
Answer: A: Spring Cattarrh 
Explanation: Ans. is 'a' i.e., Spring Cattarrh * Cobble-stone or pavement stone appearance is seen in spring catarrh.Important signs of spring catarrhConjunctivalCornealPalpebralBulbar# Punctate epithelial keratitis# Ulcerative vernal keratitis: shallow transverse ulcer (Shield ulcer)# Vernal corneal plaques# Subepithelial scarring# Pseudogerontoxon: chracterized by a classical "cupid's bow" outline.* Papillary hypertrophy into polygonal papilla* Cobble stone (Pavement stone) appearance* Giant papilla (Cauliflower excrescence)* Gelatinous thickening around limbus* Horner trantas spots* Dusky red triangular congestion* Follicles are not seen in spring catarrh.