Plano-convex, plano-concave, bi-convex and bi-concave full diameter lenses.
Plus or minus cylinder lenses available.
The Marco Perimeter Trial Lens Set consists of a more modest selection of the same quality lenses that are found in the 35-6 TW Trial Lens Set. Primarily produced for field machine use, the Perimeter Trial Lens Set has proven invaluable for field refractions at nursing homes, hospitals and various satellite clinics. The Perimeter Trial Lens Set comes standard with a small vinyl carrying case.