ABOUT TRIAL LENS SET |
Trial lens set is a kind of ophthalmology calculating apparatus, used by hospital ophthalmology and glasses shop to exam people’s dioptric situation: hyperopia, myopia, presbyopia, astig- matism strabismus or color blindness. |
SPECIFICATION |
Reduced Aperture 225 Lens Contents:-
- 32 pairs each cx and cc sph – 20 pairs each cx and cc cyl
- 0.25 to 4.00 in 0.25 steps – 0.25 to 3.50 in 0.25 steps
- 4.50 to 6.00 in 0.50 steps – 4.00 to 6.00 in 0.50 steps
- 7.00 to 14.00 in 1.00 steps – 10 prisms
- 16.00 to 20.00 in 2.00 steps – 1/2,1,2,3,4,5,6,8,10,12
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ACCESOORIES |
Maddox Rod, Stenopaic Slit, Pinhole 2 blank discs, Red Glass, Green Glass, Trial Frame. |