Report Abuse. Yes, I'm sorry but they eat blood. That's why they are usually found on the scalp and not in the lengths of the hair. Yes it's very common for kids of all ages to get them I suggest you keep your hair bunched when with your nieces.
Convergence insufficiency is a difficulty or inability of the eyes to converge and work together at a near distance for extended periods of time, such as when reading, writing, drawing, or viewing a computer screen.
When someone uses both eyes to focus on the same object, their eyes converge. The convergence then stretches the extraocular muscles, and kinesthetic sensations from the extraocular muscles help with depth and distance perception.