The classic three symptoms of congenital glaucoma are:

tearing (epiphora),
bothered by light (photophobia) and
eyelid spasm (blepharospasm).

In addition, an enlarged eye(s) (buphthalmos) may be noted. –

The cornea may appear cloudy and swollen (corneal oedema).
Horizontal or concentric streaks may be seen. (Haab’s striae)

The pressure inside the eye is elevated usually in the 30 to 40 mmHg range. Normal is less than 16 mmHg in children. Only your eye doctor can determine that.