All of the lens are multi-coated preventing from reflect-ion, humidity. The mildewproof design offers fair pictur-es. This model can be equipped with applanation tono-meter and measurement eyepiece. - Update: 2007-07-04

1. The "cornea reflection light coincidence method" is used. 2. This operates by aligning luminous points on the pupils with the measuring line. 3. Results are displayed digitally. 3 measurements are given: Right, Right + left, left. 4. Results... - Update: 2007-07-09

Specifications & Performance Refractive Measurement Display Range: Sphere: 0 Dptr~ -29Dptr (It is possible to set to 0.125step) 0 Dptr~+26.75 Dptr(It is possible to set to 0.125step) Astigmatism: 0 Dptr~+8.75 Dptr ( It is possible to set to... - Update: 2009-06-24

1. Magnification of Eyepiece: 15X; 2. Total Magnification: 18X; 3. Illumination: 2X 6V/12W halogen bulb; Measurement Range: 1. Radius of Curvature: 5.5-11mm; 2. Diopter: 30-60dpt; 3. Readings radius: 0.02mm; 4. Diopter: 2.25dpt; 5. ... - Update: 2009-06-24

Spheres: 39 pairs 0.25 to 6.00 in 0.25 steps 6.50 to 10.00D in 0.50 steps 11.00D to 14.00 in 1.00 steps 16.00D to 20.00 in2.00 steos cylinders:20 pairs 0.25 to 4.00D in 0.25 steps 4.50D to 6.00D in 0.50 steps prisms:14... - Update: 2009-06-24