Trail Lens Set (Illuminated), also known as ophthalmic trial lens set is made of high quality lens with a group portability of lens. It contains plano-convex, plano-concave, bi-convex and bi-concave. There is a spectacle frame with number of adjustments for interpupillary distance. This ophthalmic trial frame or trial lens frame helps in holding the trial lens on its place during the examination. Each lens is fitted to test the vision. It can check positive, negative, spherical or plano cylinders and other vision related problems.
Ophthalmologist checks the vision of the patient to get the correct vision through various attempts by trial and error method of the combination of the lenses which best suits to the patient.
These trial lens kit is used to check the effective power of eye and give an exact report for judging the eye sight.