Production of an ophthalmic member adapted for central and peripheral vision

A production method and component technology, applied in optical components, glasses/goggles, optics, etc., can solve the problem of reduced visual comfort of the wearer

Active Publication Date: 2010-03-03
ESSILOR INT CIE GEN DOPTIQUE
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

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Problems solved by technology

Consequently, the resulting refractive error correction is not suitable for these viewing conditions and the wearer's visual comfort is reduced

Method used

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  • Production of an ophthalmic member adapted for central and peripheral vision
  • Production of an ophthalmic member adapted for central and peripheral vision
  • Production of an ophthalmic member adapted for central and peripheral vision

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Embodiment Construction

[0024] The invention will now be described in detail within the framework of the realization of a corrective ophthalmic lens of spectacle lens type. However, it will be appreciated that the invention may be applied to other ophthalmic components implementing a correction of refractive errors, for example, especially in goggles for winter sports or diving activities.

[0025] Further, the spectacle lens capable of correcting myopia will be described through examples. However, it will also be appreciated that the present invention is similarly applicable to any corrective lens, regardless of the nature of the wearer's refractive error.

[0026] First, the relative magnitudes of eye and head movements are characterized for the intended wearer of the lens. Thus, the wearer will be asked to fixate on a first object directly in front of him, called a reference object, to which the wearer is to face. The reference target is marked R in Fig. 1a. Preferably, the reference target is ...

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Abstract

The invention relates to a method for making an ophthalmic member for correcting ametropia, that is adapted for correcting the central and peripheral vision of a wearer and takes into account the amplitudes of the movements of the wearer's eyes and head. A central area of the member, in which the central vision is corrected, is sized based on the amplitude of the eyes' movements in order to provide good visual comfort. The peripheral vision is corrected in a peripheral area of the ophthalmic member in order to prevent an increase of the wearer's ametropia in the long run.

Description

technical field [0001] The present invention relates to a production method of an ophthalmic component for correcting ametropia, in particular, a production method of an ophthalmic component suitable for correcting foveal and peripheral vision. Background technique [0002] In order to correct the refractive error of the subject, a spectacle lens is used which is placed in a position fixed to the face in front of the eyes, and a frame is used to fix said lens. The central region of the lens serves primarily to correct the wearer's refractive error when looking forward. Images of objects seen under these conditions are viewed through the central area of ​​the wearer's retina, known as the foveal zone. For this reason, the visual perception corresponding to the direction of looking straight ahead is called foveal vision or central vision. The purpose of the correction of the refractive error produced by the central area of ​​the spectacle lens therefore consists in bringing ...

Claims

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Application Information

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Patent Type & Authority Applications(China)
IPC IPC(8): G02C7/02
CPCG02C7/02G02C7/027G02C7/028
Inventor 比约恩·德罗巴
Owner ESSILOR INT CIE GEN DOPTIQUE
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