This is a real-world medical entrance exam question, please give the true answer based on the question and selection. Topic name: FMGE 2018, Subject name: Ophthalmology
NOT a feature of trachoma: 
Select and explain. 
A. Corneal opacity, B. Chalazion, C. Entropion, D. Herbe's pits
B: Chalazion
Answer: B: Chalazion 
Explanation: Clinical features of trachoma - Lacrimation Photophobia Red eyes Hall mark - Sago grain follicles Herbe's pits seen Arlt's line on upper palpebral conjunctiva seen - sub conjunctival line of fibrosis Arlt's triangle seen in anterior uveitis - lower 1.3rd of the corneal endothelium where Keratic Precipitates settle due to the normal aqueous flow dynamics Pannus seen (nonspecific sign) Chalazion are not associated with trachoma- chronic inflammatory granuloma of the meibomian gland Seen in people with Oily skin Ocular rosacea