Andi Mack is the main character of the Disney Channel television show Andi Mack. She is... Andi Mack is the main character of the Disney Channel television show Andi Mack. She is portrayed by Peyton Elizabeth Lee. A girl who is about to realize that she can define who she is, when her older sister Bex returns home with a revelation, Andi is left with many questions that jump start her self-discovery.
Open-angle glaucoma, the most common form of glaucoma, accounting for at least 90% of all glaucoma cases: 1  Is caused by the slow clogging of the drainage canals, resulting in increased eye pressure.  Has a wide and open angle between the iris and cornea.
Closed-angle glaucoma occurs when the iris is pushed against the lens closing off and blocking the drainage angle. The aqueous humor cannot drain out and eye pressure increases. The rise in pressure usually occurs very suddenly (a condition called acute closed-angle glaucoma).