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Jackson Cross Cylinder

Jackson Cross Cylinder
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Product Code : UV-76
Brand Name : Unitech Vision
Price And Quantity
  • Minimum Order Quantity
  • 1
  • Unit of Measure
  • Piece/Pieces
  • Price Range
  • 350.00 - 400.00 INR
  • Price
  • 350 / 400 INR
Product Specifications
  • Material
  • Steel
  • Driven Method
  • Manual
  • Voltage
  • 220V Volt (v)
  • Usage
  • Ophthalmic usage
Product Description

Categories: Examination Equipments

Operation Mode: Manual

Warranty: 1 Year

Voltage: 220 V

Jackson Cross Cylinder is a lens of fundamental importance in optometry with a key role in the refraction routine. And yet it appears not to be as well understood as perhaps it should be. The purpose of this paper is to examine the linear optical character of the Jackson cross-cylinder and, in particular, those properties associated with the operations performed on the lens in the refraction routine, namely flipping and turning. Corresponding to these operations in physical space are steps in an abstract space, symmetric dioptric power space. The powers of all Jackson cross-cylinders lie in the plane of anastigmatic powers in the abstract space. In particular the powers of an F Jackson cross-cylinder (for example, a 0.5-D Jackson cross-cylinder has F = 0.5 D) lie on a circle of radius F centered on null power. Flipping the lens takes one diametrically across the circle; turning the lens takes one around the circle at twice the rate. A subsequent paper shows how these operations work in defining the cylinder in the refraction routine.



Trade Information
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  • Cheque, Cash in Advance (CID), Cash Advance (CA), Cash on Delivery (COD)
  • Delivery Time
  • 1-2 Days
  • Main Export Market(s)
  • Africa, Middle East, Western Europe, Eastern Europe, South America, North America, Central America, Australia, Asia
  • Main Domestic Market
  • All India

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  • Mr Sudhir Rai (Proprietor)
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