These films are compatible with the Reti Eye Laser Practice Kit. There are 10 replacement films per pack. The Reti Eye Laser Practice Kit has a 6mm pupil and is comprised of two halves – the upper half includes a lens; the lower half houses replaceable retinal films that show vascularization and the optic nerve. The kit includes the Reti Eye, a wooden base, 10 retinal films, and an adjustable clamp for slit lamp mounting. For indirect ophthalmoscopy practice, the Reti Eye is placed on the wood base and rotated for a clear view of the fundus. During photocoagulation practice, tiny white spots form on the retinal film when using a green photocoagulation laser. These films are compatible with the Reti Eye Laser Practice Kit. There are 10 replacement films per pack. The Reti Eye Laser Practice Kit has a 6mm pupil and is comprised of two halves – the upper half includes a lens; the lower half houses replaceable retinal films that show vascularization and the optic nerve. The kit includes the Reti Eye, a wooden base, 10 retinal films, and an adjustable clamp for slit lamp mounting. For indirect ophthalmoscopy practice, the Reti Eye is placed on the wood base and rotated for a clear view of the fundus. During photocoagulation practice, tiny white spots form on the retinal film when using a green photocoagulation laser.