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Device And Method For Measuring Subjective Refraction

A device, subjective technology, used in the field of devices for measuring subjective refraction of near or intermediate vision, capable of solving problems of aberrations, centering, destroying optical prescriptions, etc.

Active Publication Date: 2016-08-03
ESSILOR INT CIE GEN DOPTIQUE
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

Therefore, during the measurement of near and / or intermediate vision with known methods and devices, the axis along which the human gaze is drawn is not easily centered well on these corrective spectacle lenses, which may cause aberrations and thus damage the optical prescription value
It is then possible to prescribe spectacles that are not optimally suited to the person's vision
In addition, the described technique does not measure cylinder modifications that may be caused by a drop in gaze

Method used

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  • Device And Method For Measuring Subjective Refraction
  • Device And Method For Measuring Subjective Refraction
  • Device And Method For Measuring Subjective Refraction

Examples

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Embodiment Construction

[0042] According to a first aspect, the present invention provides a device for measuring subjective refraction of near vision and / or intermediate vision of a person or patient. figure 1 A part of an apparatus for measuring subjective refraction of a person's near vision and / or intermediate vision according to an embodiment of the invention is shown.

[0043] The device comprises a corrective support 3 for each eye of the person, intended to receive at least one corrective lens (not shown). These corrective supports 3 are arranged so that the person sees through the corrective lenses for each eye. These orthotic supports 3 may for example be of the trial frame type. Figure 2AA more detailed view of these orthotic supports 3 is shown in .

[0044] refer to Figure 2A , the device according to the illustrated embodiment additionally comprises a sight 5 for each eye of the person, defined by an axis and intended to be placed in front of the eye by the corrective support 3 . ...

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Abstract

The invention relates to a device and a method for measuring subjective refraction. The device is used for measuring the subjective refraction of a person in near and / or medium vision, which comprises, according to the invention, for each eye of the person, a correction mounting (3) provided with at least one corrective lens, the correction mountings (3) being arranged such that the person looks through the lenses. The position of each correction mounting (3) is variable such as to adjust an angle [alpha] between the axes of the lenses.

Description

technical field [0001] The invention relates to a device for measuring subjective refraction for near or intermediate vision. The context of the present invention is the measurement of parameters indicated on the optical prescription of a person requiring corrective glasses in order to correct visual defects such as nearsightedness, farsightedness, astigmatism and / or presbyopia. The invention also relates to a method for measuring subjective refraction for near or intermediate vision. [0002] Generally speaking, and in the context of this specification, near vision is associated with distances of up to 70 cm, and intermediate vision is associated with distances of about 70 cm to four meters. Near vision may be associated, for example, with reading a book held in hand or a smartphone, and intermediate vision with looking at a computer screen, television screen, or car dashboard or with household chores. Background technique [0003] Devices and methods for measuring the su...

Claims

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Application Information

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Patent Type & Authority Applications(China)
IPC IPC(8): A61B3/103A61B3/00A61B3/032
CPCA61B3/0091A61B3/032A61B3/1035A61B3/0008A61B3/0025A61B3/0285A61B3/04A61B3/113A61B3/14
Inventor B·卢梭M·赫尔南德斯K·巴朗东P·奥利维斯G·马林
Owner ESSILOR INT CIE GEN DOPTIQUE
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