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Method and systems for laser treatment of presbyopia using offset imaging

Patent 6663619 Issued on December 16, 2003. Estimated Expiration Date: Icon_subject July 9, 2021. Estimated Expiration Date is calculated based on simple USPTO term provisions. It does not account for terminal disclaimers, term adjustments, failure to pay maintenance fees, or other factors which might affect the term of a patent.

Patent References

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Patent #: 5314422
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Inventor: Nizzola

Laser surgical method of sculpting a patient's cornea and associated intermediate controlling mask
Patent #: 5376086
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Inventors

Application

No. 09/901964 filed on 07/09/2001

US Classes:

606/5, Recurving or reshaping of the eye351/212, For cornea curvature measurement606/10, Systems606/4Ophthalmic

Examiners

Primary: Gibson, Randy W.
Assistant: Farah, Ahmed

Attorney, Agent or Firm

International Classes

A61F 9/01 (20060101)
A61F 9/007 (20060101)
A61F 9/008 (20060101)

Abstract

An ophthalmic surgery system and method for treating presbyopia by performing ablative photodecomposition of the corneal surface. A laser system ablates tissue to a predetermined ablation shape, and the cornea heals significantly to form a multifocal shape correcting presbyopia. The multifocal shape corrects for near-vision centrally and far-vision peripherally. The system and method enables wide area treatment with a laser having a narrower beam than the treatment area, and can be used in the treatment of many conditions in conjunction with presbyopia such as hyperopia, hyperopic astigmatism and irregular refractive aberrations.

Other References

  • Anschutz, T. (1994). "Laser correction of hyperopia and presbyopia," Int. Ophthalmol Clin. 34(4):107-137
  • Josephson, J.E. (1993). "Corneal Bifocal Effects by Laser Photorefractive Keratectomy," Arch Ophthalmol vol. 111, pp. 582
  • Shimmick, J., Appendix A: VISX Myopie Corrections, (1996) 1 page total
  • Shimmick, J., Appendix B: VISX Astigmatic Corrections, (1997) 1 page total
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