Visual outcomes and subjective experience after bilateral implantation of a new diffractive trifocal intraocular lens

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Abstract

Purpose - To assess clinical outcomes and subjective experience after bilateral implantation of a diffractive trifocal intraocular lens (IOL).
Setting - Midland Eye Institute, Solihull, United Kingdom.
Design - Cohort study.
Methods - Patients had bilateral implantation of Finevision trifocal IOLs. Uncorrected distance visual acuity, corrected distance visual acuity (CDVA), and manifest refraction were measured 2 months postoperatively. Defocus curves were assessed under photopic and mesopic conditions over a range of +1.50 to -4.00 diopters (D) in 0.50 D steps. Contrast sensitivity function was assessed under photopic conditions. Halometry was used to measure the angular size of monocular and binocular photopic scotomas arising from a glare source. Patient satisfaction with uncorrected near vision was assessed using the Near Activity Visual Questionnaire (NAVQ).
Results - The mean monocular CDVA was 0.08 logMAR ± 0.08 (SD) and the mean binocular CDVA, 0.06 ± 0.08 logMAR. Defocus curve testing showed an extended range of clear vision from +1.00 to -2.50 D defocus, with a significant difference in acuity between photopic conditions and mesopic conditions at -1.50 D defocus only. Photopic contrast sensitivity was significantly better binocularly than monocularly at all spatial frequencies. Halometry showed a glare scotoma of a mean size similar to that in previous studies of multifocal and accommodating IOLs; there were no subjective complaints of dysphotopsia. The mean NAVQ Rasch score for satisfaction with near vision was 15.9 ± 10.7 logits.
Conclusions - The trifocal IOL implanted binocularly produced good distance visual acuity and near and intermediate visual function. Patients were very satisfied with their uncorrected near vision.

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  • Visual outcomes and subjective experience

    Rights statement: NOTICE: this is the author’s version of a work that was accepted for publication in Journal of cataract and refractive surgery. Changes resulting from the publishing process, such as peer review, editing, corrections, structural formatting, and other quality control mechanisms may not be reflected in this document. Changes may have been made to this work since it was submitted for publication. A definitive version was subsequently published in Sheppard, A, Shah, S, Bhatt, U, Bhogal, G & Wolffsohn, J, 'Visual outcomes and subjective experience after bilateral implantation of a new diffractive trifocal intraocular lens' Journal of cataract and refractive surgery, vol In Press, Corrected Proof (2013) DOI http://dx.doi.org/10.1016/j.jcrs.2012.09.017

    Accepted author manuscript, 108 KB, PDF-document

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Original languageEnglish
Pages (from-to)343-349
Number of pages7
JournalJournal of Cataract and Refractive Surgery
Volume39
Issue3
Early online date15 Jan 2013
DOIs
StatePublished - Mar 2013
EventAnnual meeting of the Association for Research in Vision and Ophthalmology - Fort Lauderdale, FL, United States

Bibliographic note

NOTICE: this is the author’s version of a work that was accepted for publication in Journal of cataract and refractive surgery. Changes resulting from the publishing process, such as peer review, editing, corrections, structural formatting, and other quality control mechanisms may not be reflected in this document. Changes may have been made to this work since it was submitted for publication. A definitive version was subsequently published in Sheppard, A, Shah, S, Bhatt, U, Bhogal, G & Wolffsohn, J, 'Visual outcomes and subjective experience after bilateral implantation of a new diffractive trifocal intraocular lens' Journal of cataract and refractive surgery, vol In Press, Corrected Proof (2013) DOI http://dx.doi.org/10.1016/j.jcrs.2012.09.017

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