Comparison between bilateral implantation of a trifocal intraocular lens and blended implantation of two bifocal intraocular lenses
Received 19 April 2017
Accepted for publication 3 July 2017
Published 1 August 2017 Volume 2017:11 Pages 1393—1397
Checked for plagiarism Yes
Review by Single-blind
Peer reviewers approved by Dr Colin Mak
Peer reviewer comments 2
Editor who approved publication: Dr Scott Fraser
César Vilar,1,2 Wilson Takashi Hida,1–3 André Lins de Medeiros,1,2 Klayny Rafaella Pereira Magalhães,2 Patrick Frensel de Moraes Tzelikis,1,2 Mario Augusto Pereira Dias Chaves,2,4 Antônio Francisco Pimenta Motta,2,3 Pedro Carlos Carricondo,1–3 Milton Ruiz Alves,3 Walton Nosé5
1Cataract Division, Brasília Ophthalmologic Hospital (HOB), Brasília-DF, Brazil; 2Renato Ambrosio Ophthalmologic Research Center (CEORA), 3Ophthalmology Department, São Paulo University – USP, São Paulo-SP, Brazil; 4Cataract Division, ProVisão, João Pessoa-PB, Brazil; 5Ophthalmology Department, Paulista Medical School – UNIFESP, São Paulo-SP, Brazil
Purpose: To compare visual outcomes and performance between bilateral implantation of a diffractive trifocal intraocular lens (IOL) Acrysof®PanOptix® TFNT00 and blended implantation of two different near add power bifocal IOLs: Acrysof® Restor® SV25T0 in dominant eye and Acrysof® Restor® SN6AD1 in the nondominant eye.
Methods: This prospective, nonrandomized, consecutive and comparative study assessed 20 patients (40 eyes) who had bilateral cataract surgery performed using the IOLs described. Patients were divided into groups, bilateral trifocal implant and blended implant. Evaluation included measurement of binocular uncorrected and corrected distance visual acuity at 4 m (UDVA, CDVA) and uncorrected intermediate (60 cm) and near (at 40 cm) visual acuity; contrast sensitivity (CS) and visual defocus curve.
Results: Postoperative CDVA comparison showed no statistical significance between groups. UDVA was significantly better in the trifocal groups. Under photopic conditions, the trifocal group had better CS in higher frequencies with and without glare. The binocular defocus curve demonstrated a trifocal behavior in both groups, with the bilateral trifocal group exhibiting better performance for intermediate vision.
Conclusion: Both lens combinations were able to provide good near, intermediate and distance vision, with the trifocal group showing significantly better performance at intermediate distances and better CS under photopic conditions.
Keywords: trifocal, blend, cataract surgery, IOL, multifocal, presbyopia
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