Dear Editor: In comparing multifocal to monofocal intraocular lenses implanted to create monovision, Wilkins et al graciously recognized me as the first to publish on the use of full ( 2.75 diopters in the near eye) monovision. However, the statement that only 1 previous study of monovision in cataract surgery has reported overall spectacle independence as an outcome measure misses the point of...

Life happens on small and grand scales, right in front of us and from afar; most of us want to experience all of it. Since the first bifocal IOLs were developed in the 1980s, scientists and manufacturers have been on a dedicated mission to provide individuals with great vision at all distances after cataract surgery. Following those early bifocal lenses, the development of multifocal lenses pro...

PURPOSE To evaluate intraindividual visual acuity, wavefront errors and modulation transfer functions in patients implanted with two diffractive multifocal intraocular lenses. METHODS This prospective study examined 40 eyes of 20 cataract patients who underwent phacoemulsification and implantation of a spherical multifocal ReSTOR intraocular lens in one eye and an aspheric Tecnis ZM900 multif...

Clinically Relevant Interpretations of Optical Bench Measurement of Intraocular Lenses We read with interest the article by Gatinel and Loicq in the April 2016 issue.1 This study draws conclusions concerning the behavior of intraocular lenses (IOLs) based on optical bench measurements. One must always be careful when correlating the optical behavior of IOLs with their corresponding clinical beh...

PURPOSE To understand the potential barriers, motivators and enablers in dispensing multifocal contact lenses (MFCL). METHOD Two focus group discussions were conducted to design questionnaires regarding the prescribing habits for multifocal contact lenses (MFCL). Questions on potential barriers and motivators were included. The questionnaires were distributed among 133 eye care practitioners ...

PURPOSE The aim of the study is to evaluate the visual acuity and patient satisfaction at varied distances under photopic and mesopic lighting conditions in patients bilaterally implanted with aspheric diffractive multifocal one-piece intraocular lenses. METHODS In this retrospective-prospective study, 16 patients with a mean age of 66.2±9.2 years (range: 50-81 years) who had undergone bilate...

Objectives This study was designed to analyse the outcomes of secondary multifocal intraocular lens implantation in eyes with white cataracts. Methods White cataract patients undergoing secondary multifocal intraocular lens implantation between June 2014 and January 2015 were evaluated prospectively. As opposed to a conventional primary intraocular lens implantation for an optimal patient, th...

PURPOSE We investigated the effects on refractive development and ocular growth of 2-zone concentric lenses with different negative powers in each of the optical zones, in normal and myopic eyes in young chicks. METHODS Monocular defocusing lenses were worn for 10-15 days from 12 days of age. Two 2-zone concentric lens types combining -5 and -10 diopter (D) powers, with center zone diameters ...