Contact lens for reshaping the altered corneas of post refractive surgery, post ortho-k or keratoconus

A contact lens, cornea technology, applied in optics, optical components, glasses/goggles, etc., can solve the problem of not disclosing the specific design of deformable corneal lenses, etc.

Active Publication Date: 2007-07-18
董晓青
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

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Problems solved by technology

The specific design of the lens used to reshape the deformed cornea is not disclosed

Method used

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  • Contact lens for reshaping the altered corneas of post refractive surgery, post ortho-k or keratoconus
  • Contact lens for reshaping the altered corneas of post refractive surgery, post ortho-k or keratoconus
  • Contact lens for reshaping the altered corneas of post refractive surgery, post ortho-k or keratoconus

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Embodiment Construction

[0031] The best mode currently contemplated for carrying out the invention is described in detail below. These descriptions should not be construed as limiting, but only for illustrating the main principles of the embodiments of the present invention. The scope of the invention is best defined by the claims. Additionally, reference is made to my prior US Patent Nos. 6,361,169, 6,543,897, and 6,652,095, which are hereby incorporated by reference.

[0032] 1, 3 and 4 illustrate an orthokeratic contact lens 10a according to one embodiment of the present invention. As shown in Figures 1 and 1a, contact lens 10a is a central conformal contact lens adapted to fit over a deformed cornea 12a of a patient's eye 14, where deformed cornea 12a is estimated from a standard trial contact lens 10h to have a hypothetical cornea 12h . Contact lens 10a preferably has six corrective zones, from the center to the outer periphery of lens 10a: optical zone 20a, conformal zone 202a, composite att...

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Abstract

A contact lens is fitted to a cornea of a patient's eye to gradually alter the patient's cornea during continued wear to reshape the altered cornea conditions such as the corneas of post refractive surgery, post previous Ortho-K. and keratoconus. The contact lens has a plurality of zones that comprise one optical zone, at least one conformation zone, a connecting zones complex, an alignment zone and a peripheral zone. The one or more conformation zones are utilized to conform the angle of the central optical zone, as well as the alignment zone, to compress on the central and mid-peripheral portion of the altered cornea for redistribute cornea tissue to reduce the residual refractive errors, after refractive surgery, or to smooth out the central cornea surface of the keratoconus for better bare or spectacle vision after contact lens are removed.

Description

[0001] Cross references to related declarations [0002] This application is a continuation of the co-pending PCT International Application No. PCT / US03 / 24624 filed with the US Receiving Office on August 6, 2003, which requires the filing on August 7, 2002 Priority to US Application No. 10 / 214,652, now US Patent No. 6,652,095. The entire contents of this PCT application and US application are hereby incorporated by reference. technical field [0003] The present invention relates to contact lenses for reshaping the cornea, and more particularly to contact lenses for reshaping geometrically abnormal altered corneas, such as after refractive surgery Increases in residual myopia, removal of hyperopia and / or presbyopia caused by overcorrection, and remodeling of irregular corneas (eg, severe or profound keratoconus) to restore useful lens-corrected vision. More particularly, the present invention relates to contact lenses shaped such that they gradually alter a patient's cornea...

Claims

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Application Information

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Patent Type & Authority Applications(China)
IPC IPC(8): G02C7/04A61F9/00
CPCG02C7/041A61F9/0017G02C7/047G02C7/04
Inventor 董晓青
Owner 董晓青
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