<prompt> Herberts pits are seen inTrachomaViral keratitisVernal conjunctivitisAny of above  <response>: Ans. a Trachoma Ref Khurana pg 91; Ophthalmology by Basak 4th142; Parson 19th Page 184Herbert pits are the oval or circular pitted scars, left after healing of Herbert follicles in the limbal area, seen in the patients with trachoma.The signs of Trachoma are:A. Conjunctival: Congestion of Upper Fornix and upper tarsal conjunctiva Follicles on the upper Tarsal Conjunctiva; Bulbar Conjunctiva Follicles contain multinucleated Giant Cells called as Lebers Cells Velvety papillary Hyperplasia Herberts Pits pathognomonic - Follicles on the limbus Arlts Line is linear scar in sulcus subtarsalis due to Conjunctival Scarring Concretions due to accum of dead epithe cells and mucus in glands of HenleB. Corneal signs: Superficial keratitis Herbert follicles in limbal area Pannus - Is fine subepithelial neovascularisation seen at the upper limbus- Progressive Pannus - Infiltration ahead of vascularisation- Regressive Pannus - Vessels extend a short area beyond infiltration Pannus Sicca Corneal ulcer Herberts Pits Corneal opacity end result.Additional Educational Points International trachoma Initiative sponsors a programme called SAFE to control Trachoma0- Surgery,- Antibiotics,- Face wash - Environmental change Vernal keratoconjunctivitis is characterized by:- Called as Spring Catarrh0- Bilateral- Exogenous Allergen- Itching- Ropy Discharge0- Cobblestone Papillary hypertrophy,- Bulbar Conjunctiva has Horner Trantas Spots- Punctate epitheliapathy is earliest finding.- Maxwell Lyon sign is also seen.- Cornea has Pseudogerantoxon with Cupid Bow outline Pterygium has Stockers line which is due to deposition of IRON.0 