This model provides a cornea-scleral shell for use with or without an iridotomy lens. Inside is an iris with 4 treatment areas. Multiple laser spots need to be delivered in focus in order to break through the iris and create the PI. A red reflex is visible with retro-illumination upon completion of a successful PI. An iridotomy laser lens may be used with Goniosol or other gels as a coupling agent for visualization. Multiple laser spots can be applied to each eye before it is consumed.