COYEUX Optical Retinoscope Eye Model, Adjustable Angle, Range of The Diopter +4.00D to -5.00D, for Optometry Teaching Eye Training Practice Tool

Name: Retinoscopy Simulation Eye Dioptric adjustment range: +4.00D~-5.00D Pupil diaphragm: 3, 5, 7 Purpose: simulated optometry practice Colour: Black Weight: 448g Dimensions: height 135mm, bottom diameter 74mm Note: This product is manually adjusted and zeroed during adjustment, but the eyesight of the adjuster and the user are different. When you think there is a difference in the "zero" positioning of the product, you need to position zero according to your eyesight. Use a screwdriver to loosen the white screw on the top indicator piece and move the black indicator piece back and forth to set the "zero" degree, then tighten it with a screwdriver (but do not use too much force, otherwise it will buckle. If it causes buckling, please use glue to glue the black indicator piece. solid).

• ★ Retinoscope practice: practice with the retinoscope to simulate the real eye. There are scales on the lens barrel to represent different degrees of refractive error. The astigmatism axis disk scale ranges from 0 to 180°, and each small division is 5°
• ★ Different Pupils: Divided into 3 difficulty levels as pupil size changes, switchable by simulating small pupils, normal pupils and dilated pupils
• ★ Accurate refraction: Our eyes refract accurately with an error of less than 0.25 units D. Its adjustable range is +4.00D to -5.00D
• ★ Three-layer curved groove: There are three layers of curved lens placement grooves, which can be used to place prescription lenses or "cylindrical lenses" with preset "astigmatism" power and axial direction
• ★ Adjustable angle: The eye angle of our model can be adjusted to more than 90 degrees by adjusting the shaft screw. It can look down, up, or down. Suitable for practitioners of different heights to practice operations