Spectacles for presbyopia

Details Spectacles for presbyopia Spectacles for presbyopia

2005-04-12

2005-04-12

Dang, Hung Xuan (Department: 2873)

Optics: eye examining, vision testing and correcting

Spectacles and eyeglasses

Combined

C351S041000

Reexamination Certificate

active

06877856

ABSTRACT:
Spectacles for presbyopia including right and left spectacle lenses for correcting presbyopia through which a user with both presbyopia and astigmatism against the rule can see objects in a near range clearly, a frame for supporting the right and left spectacle lenses, right and left side pieces journalled to right and left sides of the frame. The frame has an elongated upper frame beam extending horizontally over the right and left spectacle lenses, and an elongated beam-like member is provided on the frame such that an elongated slit extending horizontally over the right and left spectacle lenses is formed by an upper surface of the upper frame beam and a lower surface of the elongated beam-like member.

REFERENCES:
patent: 6257719 (2001-07-01), Pavlak

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