Synchrony dual-optic accommodating intraocular lens

McLeod, Stephen D.; Vargas, Luis G.; Portney, Val; Ting, Albert C.

doi:10.1016/j.jcrs.2006.09.020

Cited by 81 publications

(19 citation statements)

References 28 publications

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“…Again, an independent observer recorded an average of 3 measurements. The intra-rater reliability was excellent (ICC = 0.945, 95%CI = -1.3078 → .6678), indicating a lack of bias and excellent test-retest repeatability [33,34]. The average standard error of measurement (SEM) based on the data was 1.84 degrees.…”

Section: Methodsmentioning

confidence: 99%

The effect of warm-up, static stretching and dynamic stretching on hamstring flexibility in previously injured subjects

O’Sullivan

Murray

Sainsbury

2009

BMC Musculoskelet Disord

154

106

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Section: Methodsmentioning

confidence: 99%

The effect of warm-up, static stretching and dynamic stretching on hamstring flexibility in previously injured subjects

O’Sullivan

Murray

Sainsbury

2009

BMC Musculoskelet Disord

154

106

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“…It has been a dream for ophthalmic surgeons for a very long time to recover accommodation in progressed age, and many attempts have been made to develop active or passive lens implants (such as accommodating lenses) [1–6], refractive or diffractive multifocal lenses [7], customized photorefractive keratectomy (PRK) or Laser in situ keratomileusis (LASIK) ablations using the excimer laser generating sectorial or zonal near focus region in the cornea [8–11], or changing the global shape of the cornea to a hyperprolate surface [8, 12]. …”

Section: Introductionmentioning

confidence: 99%

Vignetting and Field of View with the KAMRA Corneal Inlay

Langenbucher

Goebels

Szentmáry

et al. 2013

BioMed Research International

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Purpose. To evaluate the effect of the KAMRA corneal inlay on the retinal image brightness in the peripheral visual field. Methods. A KAMRA inlay was “implanted” into a theoretical eye model in a corneal depth of 200 microns. Corneal radius was varied to a steep, normal, and flat (7.37, 7.77, and 8.17 mm) version keeping the proportion of anterior to posterior radius constant. Pupil size was varied from 2.0 to 5.0 mm. Image brightness was determined for field angles from −70° to 70° with and without KAMRA and proportion of light attenuation was recorded. Results. In our parameter space, the attenuation in brightness ranges in between 0 and 60%. The attenuation in brightness is not affected by corneal shape. For large field angles where the incident ray bundle is passing through the peripheral cornea, brightness is not affected. For combinations of small pupil sizes (2.0 and 2.5 mm) and field angles of 20–40°, up to 60% of light may be blocked with the KAMRA. Conclusion. For combinations of pupil sizes and field angles, the attenuation of image brightness reaches levels up to 60%. Our theoretical findings have to be clinically validated with detailed investigation of this vignetting effect.

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“…The dual-optic Synchrony accommodating IOL (Abbott Medical Optics Inc., Santa Ana, CA, USA) was specifically designed to fill the entire capsular bag and benefit from the accommodative capacity of the lens capsule during near vision 3,4. The three-dimensional, single-piece, foldable silicone lens has a high plus-powered moving optic attached to a variable minus-powered optic through spring haptics.…”

Section: Introductionmentioning

confidence: 99%

“…With accommodative action, the zonules relax, releasing the tension on the capsular bag, which results in a forward displacement of the anterior optic. Design and clinical performance of the parent dual-optic accommodating IOL (Synchrony) have been discussed in detail in previous publications, including improved near vision, reading ability, and long-term performance 4–7…”

Section: Introductionmentioning

confidence: 99%

Clinical performance of a new aspheric dual-optic accommodating intraocular lens

Marques¹,

Castanheira–Dinis²

2014

OPTH

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PurposeTo describe the clinical performance of a new dual-optic intraocular lens (IOL) with an enhanced optic profile designed to mimic natural accommodation.Patients and methodsProspective multicenter clinical study with the new dual-optic aspheric accommodating IOL (Synchrony Vu) in 74 patients (148 eyes) undergoing cataract surgery. Refractive target was emmetropia. Examinations at 1 month and 6 months included subjective refractions; visual acuities at near, intermediate, and far; mesopic contrast sensitivity with and without glare; safety data; and subjective survey on dysphotopsia (halos and glare).ResultsClinical data at 6 months showed 89% of the eyes within ±1.0 D spherical equivalent refraction. Mean binocular uncorrected and distance-corrected visual acuity was 20/20 at far (0.00±0.11 logMAR and −0.06±0.08 logMAR, respectively), 20/20 at intermediate (0.01±0.13 logMAR and −0.01±0.10 logMAR, respectively), and 20/25 at near (0.10±0.14 logMAR and 0.14±0.15 logMAR, respectively). Mesopic contrast sensitivity was within normal limits. Seventy-eight percent of the patients had no spectacles and 70% had no dysphotopsia. One eye had IOL repositioning within 1 month of surgery.ConclusionThe new aspheric Synchrony Vu accommodating IOL provided good visual performance at a range of distances without affecting quality of vision and with minimal safety considerations.

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Synchrony dual-optic accommodating intraocular lens

Abstract: A dual-optic design linked by spring haptics increases the accommodative effect of axial optic displacement with minimal magnification effect and has promise for improving the performance of accommodative intraocular lenses.

Cited by 81 publications

References 28 publications

The effect of warm-up, static stretching and dynamic stretching on hamstring flexibility in previously injured subjects

The effect of warm-up, static stretching and dynamic stretching on hamstring flexibility in previously injured subjects

Vignetting and Field of View with the KAMRA Corneal Inlay

Clinical performance of a new aspheric dual-optic accommodating intraocular lens

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