Relative frequencies of ophthalmia neonatorum and congenital nasolacrimal duct obstruction

I appreciate the useful article from Maqsood and Mahmood on the identification and diagnosis of herpes simplex ophthalmia neonatorum.¹ As McKechnie and Snelson suggest in their response, a key differential for ‘sticky eye’ in the neonate is congenital nasolacrimal duct …