Ishihara Test Book 38 Plate For Color Blindness Ophthalmology. Makes Use Of The Peculiarity That In Red-Green Blindness, Blue And Yellow. defect, or the other way around. The full test consists of 38 plates.
500 mL Buchner Funnel Filtering Vacuum Filtering Flask w/ Handheld Vacuum Pump. Model : Ishihara Test Chart Books. Chart Type : Eye/Vision Exam Chart. Transformation design: Color blind people will see a different sign than people with no color vision handicap.
Ishihara Test Chart Books Color Vision Test for Color Deficiency 38 Plates New. Model : Ishihara Test Chart Books. Chart Type : Eye/Vision Exam Chart. Transformation design: Color blind people will see a different sign than people with no color vision handicap.
Ishihara Test Chart Book Color Deficiency Test Easy Reference Vision Testing. Ishihara Eye Test Chart Books for Color Deficiency 38 Plates color vision US. Model : Ishihara Test Chart Books. Transformation design: Color blind people will see a different sign than people with no color vision handicap.
Model : Ishihara Test Chart Books. Chart Type : Eye/Vision Exam Chart. Transformation design: Color blind people will see a different sign than people with no color vision handicap. Hidden digit design: Only colorblind people are able to spot the sign.
Original Pic of the Product for Detailed View. 2x Eye Shields. Note:The sale of this item may be subject to regulation by the U.S. Food and Drug Administration and state and local regulatory agencies.
Performance indexes:1) pupil distance adjustment range: binocular pupil distance 48 ~80mm, left or right pupil distance 24 ~40 mm; Minimum scale value 1mm2) the axial scale of the dividing disk is 130 °~ 0 °~ 120 °on the left and 50 °~ 180 °~ 60 °on the right. The axis scale increases counterclockwise along the axis of the mirror frame. The effective internal aperture of the frame is 5 °3) Effective internal aperture of mirror frame: 33.5mm4) Number of lenses inserted when left or right frames are used: 5pieces (front 3 rear 2)5) the lens rotates around the optical axis in the inner circle of the lens frame is 360 °6) the lens optics The unparallelism between the axis and the geometric axis of the frame: ≤ 2.5 °7) the difference between the optical center and the geometric center of the lens: ≤ 0.5mm8) the displacement of the lens relative to the geometric center of the frame: ≤ 0.3 mm9) nose Range of adjustment: adjustable length: 0 ≤ 22 mm; Angle: 360 °10) adjustable length range of left or right foot: 0~20mm11) weight: 52g
(2) the axial scale of the dividing disk is 130 °~ 0 °~ 120 °on the left and 50 °~ 180 °~ 60 °on the right. 10) adjustable length range of left or right foot: 0~20mm.