What Does Decentration Mean in Optics
Lens Decentration Equals the Difference of the Distance Between the Optical Center and Pupil Distance. … Their Optical Center Was Measured Using Lens Meter...
Lens decentration equals the difference of the distance between the optical center and pupil distance. … Their optical center was measured using lens meter, and their pupil distance was measured by pupil distance ruler.
What is optic Decentration?
In ophthalmic optics, the term “decentration” refers to the shift of the crystalline lens, an intraocular lens (IOL), a corneal refractive treatment, a contact lens, or the lens in a frame relatively to the visual axis.
How much Decentration is too much?
A good rule is to limit decentration to 1 to 3 millimeters whenever you can. In high minus powers, excessive decentration thickens the lateral edge of the lens. In plus, excessive decentration thickens the nasal edge of the lens and makes the magnification of the patient’s eyes greater.
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