May 2005
Volume 46, Issue 13
Free
ARVO Annual Meeting Abstract  |   May 2005
Light Adjustable Lens: Clinical Trial Results
Author Affiliations & Notes
  • S.H. Chang
    R & d, Calhoun Vision, Inc., Pasadena, CA
  • C.A. Sandstedt
    R & d, Calhoun Vision, Inc., Pasadena, CA
  • J.A. Vega
    R & d, Calhoun Vision, Inc., Pasadena, CA
  • J.D. Wilson
    R & d, Calhoun Vision, Inc., Pasadena, CA
  • B. Tsuchiyama
    R & d, Calhoun Vision, Inc., Pasadena, CA
  • A.S. Chayet
    Codet Aris Vision Institute, Tijuana, Mexico
  • D. Schwartz
    R & d, Calhoun Vision, Inc., Pasadena, CA
  • Footnotes
    Commercial Relationships  S.H. Chang, Calhoun Vision, Inc. E, P; C.A. Sandstedt, Calhoun Vision, Inc. E, P; J.A. Vega, Calhoun Vision E; J.D. Wilson, Calhoun Vision E; B. Tsuchiyama, Calhoun Vision E; A.S. Chayet, None; D. Schwartz, Czlhoun Vision I, P.
  • Footnotes
    Support  None.
Investigative Ophthalmology & Visual Science May 2005, Vol.46, 803. doi:
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    • Get Citation

      S.H. Chang, C.A. Sandstedt, J.A. Vega, J.D. Wilson, B. Tsuchiyama, A.S. Chayet, D. Schwartz; Light Adjustable Lens: Clinical Trial Results . Invest. Ophthalmol. Vis. Sci. 2005;46(13):803.

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      © ARVO (1962-2015); The Authors (2016-present)

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Abstract

Abstract: : Purpose: The purpose of this work is to determine whether a Light Adjustable Lens can undergo precise in situ post–implantation adjustment of spherical and astigmatic power. Methods: Sixteen cataract patients were implanted with a foldable, silicone Light Adjustable Lens (LAL) after standard phacoemulsification. At 7–14 days post–operatively, each patient’s BCVA, auto–refraction, and contrast sensitivity was determined. Using a digital light delivery device (Carl Zeiss Meditec), lens power adjustment was then performed to achieve a pre–determined spherical and/or astigmatic change. One day after adjustment BCVA, auto–refraction, and contrast sensitivity were determined. Results: Adjustment of spherical refractive error was successfully achieved in eight consecutive patients from +1.5 D to –1.25D. All of the achieved power changes were within 0.25 D of the attempted values with the exception of one patient (within 0.5 D). Additional patients were successfully adjusted for post–operative astigmatic error. All patients maintained pre–adjustment BCVA and contrast sensitivity. No eyes showed any evidence of inflammation. The adjustment procedure was well tolerated by all patients without complications. Conclusions: A Light Adjustable Lens has been implanted and precisely adjusted using a digital light delivery system to correct spherical and astigmatic refractive error. The biocompatibility of the LAL lens in the human eye has been demonstrated with implant data up to 24 months.

Keywords: cataract • visual acuity • refractive surgery: optical quality 
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