Unilateral watery discharge from the eye of a new born, with no edema or chemosis is due to –
Watery discharge, with no edema or swelling in a newborn is typical of chemical ophthalmia neonatorum.
In infective cause, there is mucopurulent or purulent discharge with marked edema and swelling.
Chlamydia
Gonococcus
Sticky eye
Chemical conjunctivitis