May 2008
Volume 49, Issue 13
Free
ARVO Annual Meeting Abstract  |   May 2008
Characteristics of Successful Aspheric Hyperopic Lasik Correction
Author Affiliations & Notes
  • K.-M. A. Tuan
    Research, Advanced Medical Optics, Santa Clara, California
  • B. Jackson
    University of Ottawa Eye Institute, Ottawa, Ontario, Canada
  • G. Mintsioulis
    University of Ottawa Eye Institute, Ottawa, Ontario, Canada
  • D. Chernyak
    Research, Advanced Medical Optics, Santa Clara, California
  • Footnotes
    Commercial Relationships  K.A. Tuan, AMO Inc., E; B. Jackson, AMO Inc, C; G. Mintsioulis, AMO Inc., C; D. Chernyak, AMO Inc., E.
  • Footnotes
    Support  None.
Investigative Ophthalmology & Visual Science May 2008, Vol.49, 2444. doi:https://doi.org/
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    • Get Citation

      K.-M. A. Tuan, B. Jackson, G. Mintsioulis, D. Chernyak; Characteristics of Successful Aspheric Hyperopic Lasik Correction. Invest. Ophthalmol. Vis. Sci. 2008;49(13):2444. doi: https://doi.org/.

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

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Abstract
 
Purpose:
 

To determine the factors necessary for patient satisfaction when using an aspheric ablation profile for near-vision enhancement of hyperopic presbyopia.

 
Methods:
 

This study was a retrospective analysis of a single-center, nonrandomized clinical trial. The site was one of four centers conducting clinical trials for this treatment. We used one site for this analysis to remove site variability. 66 eyes of 33 hyperopic patients underwent customized refractive surgery Surgeries were performed using the VISX STAR S4 or VISX STAR S4 IR excimer laser system (AMO, Santa Clara, CA).

 
Results:
 

60 eyes completed 6 months of follow-up visits. 50 eyes completed 12 months of follow-up visits. 75% of the eyes improved by 2 or more lines. At 6 months, 93% of subjects had binocular simultaneous uncorrected vision ≥ 20/25 distance and J3 near. At 12 months, 100% of subjects had achieved binocular simultaneous uncorrected vision ≥ 20/25 and J3, and 72% of subjects had vision ≥ 20/25 and J1. Patients with higher pre-op refractive error or worse pre-op DCNVA were more likely to report satisfaction after receiving the aspheric ablation (ordinal logistic regression, both p<0.05). Postop, higher spherical aberration (SA) and lower coma or trefoil were associated with greater satisfaction with intermediate and near vision (ordinal logistic regression, all p<0.05). Subjects whose procedures included iris registration (IR) experienced better outcomes, including a significantly (p<0.05) stronger asphericity effect, better near vision, and greater satisfaction under night glare conditions at most time points, than subjects who did not have IR.

 
Conclusions:
 

Aspheric ablations to expand near functional vision were stable over 12 months. The customized hyperopic treatment with negative SA and IR provided better outcomes. The patients’ pre-op prescriptions and near vision were critical factors in visual outcome and satisfaction. Patients with clinically significant hyperopia and significant reduction of distance-corrected near vision were more likely to have near vision improvement and to be satisfied with results.  

 
Clinical Trial:
 

www.clinicaltrials.gov to be registered on 12/31/2007

 
Keywords: refractive surgery: LASIK • presbyopia 
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