FIGURE 123.17 Dacryocystitis in an infant with a dacryocele Erythematous, tender, swelling along the inferior medial canthal area representing inflammation of the nasolacrimal sac Suggested Readings and Key References General Bagheri N, Wajda BN, eds Wills Eye Manual: Office and Emergency Room Diagnosis and Treatment of Eye Disease 7th ed Philadelphia, PA: Wolters Kluwer; 2017 Periorbital and Orbital Cellulitis Botting AM, McIntosh D, Mahadevan M Paediatric pre- and post-septal periorbital infections are different diseases A retrospective review of 262 cases Int J Pediatr Otorhinolaryngol 2008;72(3):377–383 Hauser A, Fogarasi S Periorbital and orbital cellulitis Pediatr Rev 2010;31(6):242–249 Rudloe TF, Harper MB, Prabhu SP, et al Acute periorbital infections: who needs emergent imaging? Pediatrics 2010;125(4):e719–e726 Santos JC, Pinto S, Ferreira S, et al Pediatric preseptal and orbital cellulitis: a 10 year experience Int J Pediatric Otorhinolaryngol 2019;120:82–88 Conjunctivitis LaMattina K, Thompson L Pediatric conjunctivitis Dis Mon 2014;60:231–238 Richards A, Guzman-Cottrill J Conjunctivitis Pediatr Rev 2010;31(5):196–208