[1. Guerry D, Kendig EL. Congenital impatency on the naso-lacrimal duct. Arch Ophthalmol, 1948, 39, 193-204.10.1001/archopht.1948.00900020198006]Search in Google Scholar
[2. Khan N, Khan MN, Jan S, Mohammad S. Congenital Nasolacrimal Duct Obstruction: Presentation and Mangement. Pak J Ophthalmol, 2006, 22 (2), 74-78.]Search in Google Scholar
[3. Zappia RJ, Milder B. Lacrimal drainage function: the fluorescein dye disappearance test. Am J Ophthalmol, 1972, 74, 160-162.10.1016/0002-9394(72)91142-7]Search in Google Scholar
[4. MacEwen CJ, Young JDH. Epiphora During the First Year of Life. Eye (Lond), 1991, 5 (5), 596-600.10.1038/eye.1991.103]Search in Google Scholar
[5. Ghuman T, Gonzales C, Mazon ML. Treatment of congenital nasolacrimal duct obstruction. Am J Orthopt, 1999, 49, 161-166.10.1080/0065955X.1999.11982207]Search in Google Scholar
[6. Pediatric Eye Disease Investigator Group (PEDIG). Resolution of Congenital Nasolacrimal Duct Obstruction with Nonsurgical Management. Arch Ophthalmol, 2012, 130(6), 730-734.10.1001/archophthalmol.2012.454]Search in Google Scholar
[7. Crigler LW. The treatment of congenital dacryocystitis. JAMA, 1923, 81, 23-24.10.1001/jama.1923.02650010027009]Search in Google Scholar
[8. Nelson LB, Calhoun JH, Menduke H. Medical Management of Congenital Nasolacrimal Duct Obstruction. Ophthalmology, 1985, 92, 1187-1190.10.1016/S0161-6420(85)33878-2]Search in Google Scholar
[9. Takahashi Y, Kakizaki H, Chan WO, Selva D. Management of congenital nasolacrimal duct obstruction. Acta Ophthalmol, 2010, 88(5), 506-513.10.1111/j.1755-3768.2009.01592.x19681790]Search in Google Scholar
[10. MacEwen CJ, Young JDH. The fluorescein disappearance test: an evaluation of its use in infants. J Pediatr Ophthalmol Strab, 1991, 28, 302-305.10.3928/0191-3913-19911101-041757852]Search in Google Scholar
[11. Dareshani S, Saleem T, Quraishy MM. Crigler Massage In Congenital Nasolacrimal Duct Obstruction. Medical Chanel, 2013, 19 (4), 21-23.]Search in Google Scholar
[12. Kakizaki H, Takahashi Y, Kinoshita S, et al. The rate of symptomatic improvement of congenital nasolacrimal duct obstruction in Japanese infants treated with conservative management during the 1st year of age. Clinical Ophthalmology, 2008, 2(2), 291-294.10.2147/OPTH.S2582269398119668718]Search in Google Scholar
[13. Katowitz JA, Welsh MG. Timing of initial probing and irrigation in congenital buct obstruction. Ophthalmology, 1987, 94, 698-705.10.1016/S0161-6420(87)33392-5]Search in Google Scholar
[14. Young JDH, MacEwen CJ, Ogston SA. Congenital nasolacrimal duct obstruction in the second year of life: A multicentre trial of management. Eye, 1996, 10, 485-491.10.1038/eye.1996.1078944104]Search in Google Scholar