Specifications: ● Sphere power Range:+16.75 to -19.00D Step:0.25D ● Cylinder power Range:0.00D to -6.00D ( 0.00D to 8.00D with additional lens of-2.00D) Step:0.25D ● Cylinder axis 0 to 180°,5°steps ● Cross Cylinder ±25 diopters ● Cross-cylinder lens ±0.25D...
Specifications: ● Sphere power Range:+16.75 to -19.00D Step:0.25D ● Cylinder power Range:0.00D to -6.00D ( 0.00D to 8.00D with additional lens of-2.00D) Step:0.25D ● Cylinder axis 0 to 180°,5°steps ● Cross Cylinder ±25 diopters ● Cross-cylinder lens ±0.25D... more
7.0-inch Color LCD Touch Screen Digital Optometry Phoropter Digital Viewer Tester GD8803 Features: 1. 7.0-inch color LCD touch screen; Stylish and compact design 2. Auto detachment printer; Independent PD adjustment 3. Built-in LED for near vision ...
7.0-inch Color LCD Touch Screen Digital Optometry Phoropter Digital Viewer Tester GD8803 Features: 1. 7.0-inch color LCD touch screen; Stylish and compact design 2. Auto detachment printer; Independent PD adjustment 3. Built-in LED for near vision ... more
SPX5-80 High Quality High Astronomical Telescope 350x Optical Digital Zoom 4K Video Night Vision Reflector Telescope Scope SPECIFICATION: ●Digital Zoom 18x:In lunar observation mode, the 5-megapixel and super starlight-grade CMOS sensor supports a maximum ...
SPX5-80 High Quality High Astronomical Telescope 350x Optical Digital Zoom 4K Video Night Vision Reflector Telescope Scope SPECIFICATION: ●Digital Zoom 18x:In lunar observation mode, the 5-megapixel and super starlight-grade CMOS sensor supports a maximum ... more
... lens lenses are made according to the law of light refraction. A lens is an optical component made of a transparent substance such as glass, crystal, or the like. The lens is a refractor whose refractive surface is two
... lens lenses are made according to the law of light refraction. A lens is an optical component made of a transparent substance such as glass, crystal, or the like. The lens is a refractor whose refractive surface is two more
