“red and green” test X008

Written by Optician Club on . Posted in Eyeglasses Frames

Optician Knowledge:
Q: How much does the "red and green" test tell the optician?

A: This test is known as the duochrome test, it truly is accustomed to estimate you may be short or long sighted (or regardless of if the lenses you happen to be wearing are far too weak or too strong). This "red and green" test works for the principle how the wavelengths of red and green light are focused slightly differently from the eye, red being closer to the retina with short sight (i.e. clearer) and green focused nearer to the retina in long sight.

Product Info

"red and green" test

"red and green" test

"red and green" test


  • Model No: X-008
  • Highlight: Changeable Slide Temple
  • Gender: Woman's Eyewear
  • Age Group: Adult
  • Frame Size: 52-18-135
  • Shape: Rectangle Eyewear
  • Spring Hinge: No
  • Color: Black
  • Available Color: Burgundy, Purple, Pink
  • Material: Titanium
  • Tips:Acetate
  • Bridge: Adjustable nose pads
  • Original: JiangSu Province
  • Rim: Full-Rim Spectacle
  • Certificate: CE and FDA are certificated

Sales Info:

  • Warranty:1-Year Warranty.
  • Availability: In Stock for Eyewear Wholesale
  • Payment Terms: Paypal, Western Union
  • Minimum Order:12pcs/Model, 300pcs in total
  • Market Preference: European Eyewear,  Australia & New Zealand Spectacle Frame
  • Eyewear Quote

Shipping Info:

  • Package: 1pcs/Poly-bag, 12pcs/Inner Box, 300PCS/Carton
  • Carton Box Size: 84*27*31
  • Cross Weight: 12KGS
  • HS Code: 90031900
  • Delivery Time: Within 7 days upon received your payment

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