ZONE EXTENSION SYSTEMS AND METHODS

摘要

Wavefront measurements of eyes are often taken when the pupil is in a first configuration in an evaluation context. The results can be represented by a set of basis function coefficients. Prescriptive treatments are often applied in a treatment context, which is different from the evaluation context. Hence, the patient pupil can be in a different, second configuration, during treatment. Systems and methods are provided for determining a transformed set of basis function coefficients, based on a difference between the first and second configurations, which can be used to establish the vision treatment.

主权项

1. A method of calculating effective powers of an optical system, through the use of a computer processor, the method comprising:
calculating a first effective power using a first Zernike expansion coefficient for the optical system, the first Zernike expansion coefficient associated with a first aperture dimension; and calculating a second effective power using a second Zernike expansion coefficient for the optical system, the second Zernike expansion coefficient associated with a second aperture dimension, the second aperture dimension greater than the first aperture dimension, the second Zernike expansion coefficient scaled relative to the first Zernike expansion coefficient using a scaling factor comprising a ratio of the second aperture dimension to the first aperture dimension raised to a power of a factor comprising a radial degree of the coefficient.