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
[{'content': 'Cobblestone conjunctivitis is seen in - \nSelect and explain. \nA. Spring Cattarrh, B. Phylctenular conjunctivitis, C. Inclusion conjunctivitis, D. Giany papillary conjunctivitis', 'role': 'user'}, {'content': 'Answer: A \nExplanation: 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.', 'role': 'assistant'}]