Type B primary infantile glaucoma 3 is a specific type of primary congenital glaucoma. Congenital means that the disease is present at birth. Primary congenital glaucoma is the most common form of childhood glaucoma. This condition is autosomal recessive which means an individual must have two copies of the changed gene that causes the condition. A person with one changed gene would be a carrier of the condition but not have any symptoms. If both parents are carriers, each of their children has a one in four chance of having the disease. Signs of the disease include early onset (from birth to 3 years of age), increased pressure within the eye, increase in the size of the cornea (clear covering of the colored part of the eye), and other eye abnormalities. The primary mode of treatment for this condition is surgery.