Ophthalmic Trial Lens Set, Materials: plastic

A trial lens set is a collection of lenses used by optometrists and ophthalmologists to determine a patient's prescription during an eye examination. These sets typically include various spherical lenses (for correcting nearsightedness or farsightedness), cylindrical lenses (for correcting astigmatism), and sometimes prisms (for correcting eye alignment issues). By placing different combinations of lenses in front of the patient's eyes, the eye care professional can determine the combination that provides the clearest vision, thus determining the patient's prescription.