Lost contact

Appearance
A flat tear.

Pick up quote
Shielded tears.

Effect
Isaac's tears look like a shield.

If a tear collides with an enemy projectile both the tear and the projectile are destroyed.

( Not confirmed ) The knockback effect on Isaac's tears pushes enemies further.

Interactions
With Quad shot Isaac intercepts most of satan/mom's hearth shots.

Having piercing tears makes Isaac's tear not stop when colliding with an enemy projectile.

Having tiny planet will make the shields orbit Isaac, blocking most enemy projectiles fired at him.