Sight Testing and Refraction

Trial Frames and Cases | Reduced aperture trial lens set

Reduced aperture trial lens set

Reduced aperture trial lens set, metal mounts, complete with case (218 lenses + 7 accessories)

Reduced aperture trial lens set

  • International colour convention
  • Metal anodise aluminium rims
  • 64 pairs of spheres: Convex: 0.125D, 0.25-4.00D in 0.25D steps, 4.50-6.00D in 0.50D steps, 6-14D in 1D steps, 14-20D in 2D steps
  • Concave: 0.125, 0.25-4.00D in 0.25D steps, 5-6D in 0.50D steps, 6-14D in 1D steps, 16-20D in 2D steps
  • 40 pairs of cylinders: Convex and Concave: 0.125D, 0.25-3.50D in 0.25D steps, 4-6D in 1D steps
  • 10 prisms: 0.5?, 1-7? in 1.0? steps, 10? and 12?
  • 7 accessories: maddox rod, red glass, green glass, stenopaic slit, pinhole disc, 2 blank discs