| 摘要 |
A visual corrective device is provided in the form of a visual field occluder or lens occluder for use with a pair of eyeglasses. A generally flat pocket-like enclosure is formed from first and second gores of a soft flexible material joined along the bottom or base portion to form an envelope enclosure. The base portion is contoured with a curvature to accommodate and generally conform to the base of a lens frame portion and lens of a pair of eyeglasses. The gores forming the envelope enclosure are open at the top for sliding the enclosure from below over a lens frame portion and lens of the eyeglasses. The enclosure is constructed and arranged with side openings in the form of first and second notches between the gores extending downward from the top of the gores and meeting the joined base of the enclosure. The notches are asymmetrical and the first notch extends to a lesser depth between the gores for receiving the higher of the inside bridge between the lens frame portions of the pair of eyeglasses or spectacles and an outside bow. The second or outer notch extends to a greater depth than the first notch for receiving and accommodating the lower of the inside bridge and an outside bow of the pair of eyeglasses. The visual field occluder and eyeglass lens enclosure may be fitted over either the right or left lens frame portion and lens by inverting the enclosure right to left or left to right. A closure at the top of the gores secures the enclosures in position and provides ready removal and replacement for washing, inverting, etc. The field of view of one eye of a wearer of the pair of eyeglasses or spectacles is occluded by the covered lens thereby deferring to the weaker eye and constraining the wearer to exercise greater use of the weaker eye through the field of view of the unoccluded lens.
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