This Near Vision Disparity Unit combines a wide range or tests for refraction and ocular motor investigations at near. The unit is supplied with polarisation set at 90/180 degrees or 45/135 degrees and a corresponding visor can be supplied if required. An optional bracket can be supplied allowing the unit to fit onto a Refractor Head reading arm. The unit is rechargeable and incorporates the following tests: 

·          Fixation Disparity Test 

·          Polarised Foveal Suppression Test

·          Polarised Bichromic Test

·          Test for Arc & Suppression in Strabismus

·          Stereopsis Test 

·          Tangent Scale & Spot 

·          V.A. Charts 

·          Dominant Eye Accommodation

·          Measurement of Monocular Amplitude of Accommodation under Binocular conditions 

·          Polarised X-Cyl Target & VA Balance Test

·          N5 – N12 Reading Fonts – individually highlighted

·          Near Point Convergence

·          Convergence Relationship Test.