What you MUST bring on your First Day: 1  Any two of the acceptable forms of identification listed in the Form I-9 list of acceptable documents. 2  A check to verify that information on the direct deposit form is correct. There is no need to void a check.
Manifest refraction - A manifest refraction is the most traditional way of measuring one's refractive error. As mentioned above, it is usually the part where the patient is shown choices and is involved in the process.
index of refraction See index of refraction. laser refraction A method of subjective refraction in which the patient observes a slowly rotating drum, on the surface of which is perceived a speckle pattern resulting from illumination by a laser.