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Tabla optométrica de color de Snellen no reflectante acabado mate tabla optom...

$ 12.4

Availability: 100 in stock
  • All returns accepted: ReturnsNotAccepted
  • Model: Does not apply
  • Brand: KASHSURG
  • Condition: New
  • MPN: Does not apply

    Description

    Snellen Color Eye Chart Non-Reflective Matte Finish Wall Eye Chart 20 Feet
    Snellen Color Eye Chart 22 x 11 Inches, 20 Feet
    The first test designed to check for color blindness while simultaneously administering visual acuity.
    An easy, convenient way to screen for color blindness in a busy medical practice or school.
    Washable Eye Chart with No Reflective Sheet
    The Snellen Eye test uses the idea of a subtended 5 minutes of arc with a 20 foot distance. This became the "standard vision" measurement. Also, Snellen developed the idea of a 5 x 5 grid for a standard for his optotypes. Each optotype must meet certain percentage requirements in this grid before it is used for testing. This helps to make a uniform and equal vision chart. The Snellen eye chart is the basis for many other vision tests.
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