Features Include:

• The “cornea reflection light coincidence method” is used. This operates by aligning luminous points on the pupils with the measuring line.
  
• Results are displayed digitally. Three measurements are given: Right, Right + Left,Left.
  
• Results are accurate to within 0.25 mm.
  
• Measurements can be made for a single eye or for both eyes.
• Ability to measure PD of focusing-point distances ranging from 30cm to infinity.
• Automatically switches OFF one minute after operation is completed to conserve power.
• Distances from tops of cornea to lenses of frames can also be measured.