Document Detail


US FDA clinical trial of the Tetraflex potentially accommodating IOL: comparison to concurrent age-matched monofocal controls.
MedLine Citation:
PMID:  20027986     Owner:  NLM     Status:  MEDLINE    
Abstract/OtherAbstract:
PURPOSE: To assess the efficacy of the Tetraflex (Lenstec Inc) intraocular lens (IOL) to provide enhanced near reading ability and spectacle independence relative to a monofocal control IOL in bilaterally implanted eyes tested binocularly.
METHODS: A prospective, age-matched, non-randomized US Food and Drug Administration clinical trial of 255 Tetraflex and 101 monofocal IOL control patients was performed. To date, 239 Tetraflex and 96 control patients were examined at 12 months postoperatively.
RESULTS: At 12 months postoperative, the Tetraflex patients read better than the controls at print sizes of 20/80 (P=.04), 20/63 (P=.01), 20/50 (P<.001), 20/40 (P=.001), 20/32 (P<.001), and 20/25 (P=.001). The proportion of patients reading at a speed of ≥80 words per minute was significantly higher with the Tetraflex IOL (P=.003). Ninety-six percent of Tetraflex patients reported never wearing glasses for distance compared with 80% of control patients (P<.001). Seventy-five percent of the Tetraflex patients reported near spectacle wear either never or only occasionally for small print and/or dim light (21% never) compared with 46% of control patients (P<.001) (9% never). Near add power requirement for corrected near visual acuity was less in the Tetraflex group (P<.001); 28% of Tetraflex patients required ≤1.25 diopters of near add, compared to only 7% of control patients. Spectacle independence, as measured by the proportion of patients with uncorrected distance visual acuity of 20/25 or better and various degrees of uncorrected near visual acuity, was also significantly better (P<.001) as was distance-corrected near visual acuity (P<.001).
CONCLUSIONS: The results support the efficacy of the Tetraflex IOL to provide enhanced near reading ability and spectacle independence relative to a monofocal IOL control.
Authors:
Donald R Sanders; Monica L Sanders;
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Publication Detail:
Type:  Clinical Trial; Comparative Study; Journal Article; Multicenter Study; Research Support, Non-U.S. Gov't     Date:  2009-12-15
Journal Detail:
Title:  Journal of refractive surgery (Thorofare, N.J. : 1995)     Volume:  26     ISSN:  1081-597X     ISO Abbreviation:  J Refract Surg     Publication Date:  2010 Oct 
Date Detail:
Created Date:  2010-10-19     Completed Date:  2011-01-31     Revised Date:  -    
Medline Journal Info:
Nlm Unique ID:  9505927     Medline TA:  J Refract Surg     Country:  United States    
Other Details:
Languages:  eng     Pagination:  723-30     Citation Subset:  IM    
Copyright Information:
Copyright 2010, SLACK Incorporated.
Affiliation:
Center for Clinical Research, 386 N York Rd, Ste 209, Elmhurst, IL 60126, USA. drsmd@drsmd.com
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MeSH Terms
Descriptor/Qualifier:
Accommodation, Ocular / physiology*
Aged
Cataract Extraction*
Eyeglasses
Female
Follow-Up Studies
Humans
Lens Implantation, Intraocular*
Lenses, Intraocular*
Male
Prospective Studies
Prosthesis Design
Reading
Refraction, Ocular / physiology
Treatment Outcome
United States
United States Food and Drug Administration
Visual Acuity / physiology
Investigator
Investigator/Affiliation:
David C Brown / ; David Schneider / ; James Sanitato / ; Paul J Dougherty / ; Stephen K Anderson / ; John Hunkeler / ; Jeffrey Boomer / ; William Trattler / ; Frank Spektor / ; Carlos Buznego / ; James Gills / ; Pit Gills / ; Robert G Martin / ; Neil Griffin / ; Scott Perkins / ; Robert Rivera / ; Michael Caplan / ; John A Vukich / ; James Loden / ; George O Waring / ; Donald R Sanders / ; Monica Sanders / ; Donald R Sanders / ; Monica Sanders /

From MEDLINE®/PubMed®, a database of the U.S. National Library of Medicine


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