Betharia, S M Comparative evaluation of Jones pyrex tubes and polyethylene tubes in conjunctivo-dacryocystorhinostomy. [electronic resource] - Indian journal of ophthalmology - 162-4 p. digital Publication Type: Clinical Trial; Comparative Study; Controlled Clinical Trial; Journal Article ISSN: 0301-4738 Subjects--Topical Terms: Conjunctivitis--surgeryDacryocystorhinostomy--methodsDrainage--instrumentationGlassHumansPolyethylenes