摘要:
A pair of spectacle progressive lenses is specially intended to a wearer suffering from convergence insufficiency or imbalance. The lens of said pair which is dedicated to the dominant eye has inset values appropriate for matching the convergence of said dominant eye, but the other lens of the pair, which is dedicated to the non-dominant eye, has inset values substantially equal to zero. Such lens pair helps in suppressing the non-dominant eye for intermediate and near vision tasks, therefore avoiding or limiting the symptoms of the convergence insufficiency.
摘要:
Method implemented by computer for determining an optical equipment including at least an optical lens and a spectacle frame, the lens being adapted to be mounted in the frame, the method including: a wearer data providing step, during which wearer data relating to the wearer's optical requirements is provided, an optical cost function providing step, during which an optical cost function is provided, the optical cost function relating to the optical function of the lens, a comfort cost function providing step, during which a comfort cost function is provided, the comfort cost function relating to the weight of the optical equipment, an optical equipment determining step, during which the optical equipment that minimizes the difference between a global cost function and a target value of the global cost function is determined, the global cost function being a weighted sum of the optical and comfort cost functions.
摘要:
A method implemented by computer means for determining an optical function of an ophthalmic lens adapted to a wearer, the method comprising: - a wearer data providing step, during which wearer data comprising at least an indication of the hearing sensitivity of the wearer and an indication of the ophthalmic prescription of the wearer are provided, - an optical function determining step, during which an optical function adapted to the wearer is determined based at least on the wearer data.
摘要:
Method for determining the acceptance of progressive addition lenses of a wearer, the method comprising: a fusional vergence parameter providing step during which at least one fusional vergence parameter representing the fusional vergence of the wearer is provided, an acceptance determining step during which the value of the at least one fusional vergence parameter is compared to a predetermined threshold value so as to determine the probability of acceptance of progressive addition lens of the wearer.
摘要:
A pair of spectacle progressive lenses is specially intended to a wearer suffering from convergence insufficiency or imbalance. The lens of said pair which is dedicated to the dominant eye has inset values appropriate for matching the convergence of said dominant eye, but the other lens of the pair, which is dedicated to the non-dominant eye, has inset values substantially equal to zero. Such lens pair helps in suppressing the non-dominant eye for intermediate and near vision tasks, therefore avoiding or limiting the symptoms of the convergence insufficiency.
摘要:
A method for producing a customized progressive ophthalmic lens intended for a wearer having a prescription for a wearer's eye corresponding to said lens, the method comprising the following steps: a) providing an initial progressive ophthalmic lens design having a meridian line; b) providing binocular convergence data for the wearer; and c) modifying the initial design so that the meridian line is laterally shifted in position with respect to said initial design, for matching the convergence data provided at step b), for said prescription, and the modified design as resulting from step c) is used for the customized lens, wherein step b) comprises the following substeps: b1) providing a visual stimulus in a sagittal plane of the wearer; and b2) moving the visual stimulus within the sagittal plane between a predetermined maximum distance and a predetermined minimum distance.