Description :

• Trial Lens Sets is suitable for examining refractive errors, such as myopia, hyperopic, astigmatism and presbyopia; also for examination of strabismus & color blindness. It is essential for ophthalmology protection departments in hospitals, the health care departments in factories, schools and country areas, the refraction rooms in glasses shops, and for physical examination of soldiers and farmers.

Specifications :

• Corrected curve trial lens set. Includes 224 pieces.
• Aluminum rings are 38mm diameter while lenses are 22mm.
• Spheres have tabs for holding lenses.
• Two sets each of plus (black) and minus (red) spheres from 12D to 20D.
• Two sets each of cylinders in plus and minus from .12D to 6D.
• Ten prism lenses, two maddrods, stenopaeic slit, two occluders, a red filter and a green filter, and a pin hole.
• Come held in a tray that is mounted in a dark brown leather/vinyl briefcase that has two combination locks.