Optical Magnifiers
Ophthalmic Instrument Table
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Manual Refractor : Vista

Auxiliary lens:

  • O.Q: Open aperture
  • R: Retinoscopic lens;+1.50 diopter spherical lens(for 67cm)
  • P: Polarizing filter.Used for polarizing testing of phoriz,Binocular balance of stereoscopic vision.
  • RMV: Red Maddox rod is set vertically.
  • RMH: Red Maddox rod is set horizontally.
  • WMV: White Maddox rod is set vertically.
  • WMH: White Maddox rod is set horizontally.
  • RL: Red lens.
  • GL: Green lens.
    +.12:+.12diopter spherical lens.Spherical power can be set by 0.12 diopter.
  • PH: A 1mm diameter pinhole is provided.This lens is used to determine if Poor vision is due to refractive abnormality or other caused.
  • 6 U: 6 diopter base up prism.Used for the tests such as horizontal phoria test.
  • 10 I 10 diopter base in prism.Used for the tests such as vertical phoria test.
  • +-.50: +-0.5 diopter cross cylinder with horizontal plus(+) axis.Used for presbyopia test.
  • OC: Occuluder

Item and range of measurement:

  • Myopia: 0 to -19.00 diopter in 0.25 diopter step (0.12 diopter step)
  • Hyperopia: 0 to +16.75 diopter in 0.25 diopter step (0.12 diopter step)
  • Astigmatism: 0 to -6.00 diopter(-8.00 diopter) in 0.25 diopter step (0.12 diopter step)
  • Phoria and vergency: 20 to 0 to 20 by 1 step;Inner 40;Outer 40(50);Upward and downward 40(46)
  • Near vision test: Main optical axes of both lenses converges by means of a tilt mechanism at 40cm in front of the eyes at 64mm P.D. If P.D. for far vision is less then 54mm,converging operation stops.
  • Binocular balance test: Rotary prism and polarizing lens methods are available.
  • P.D.: 48 to 75mm by 1mm step
  • Level adjustment: More than 4.5 for right and left banks
  • Dimensions: 335(at 64mm P.D. setting) 97 294mm
  • Weight: 4.5kg