Clinical magnification and residual refraction after implantation of a double intraocular lens system in patients with macular degeneration

Amselem, Luis; Díaz-Llopis, M.; Felipe, Adelina; Artigas, José M.; Navea, Amparo; García-Delpech, S.

doi:10.1016/j.jcrs.2008.05.032

Cited by 16 publications

(18 citation statements)

References 17 publications

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“…The Orientation and Processing of Airborne Laser Scanning data Vector System (Image Science Ltd) was used applying Fast Fourier Transform techniques. [ 20 21 22 ]…”

Section: Methodsmentioning

confidence: 99%

Effect of the color of the intraocular lens on optical and visual quality

Dı́ez-Ajenjo

García-Domene²,

Peris-Martínez³

et al. 2014

Indian J Ophthalmol

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Purpose:To analyze the optical quality of intraocular lenses (IOL) with an orange (PC440Y) and a yellow (SN60AT) filter, and correlate these results with the visual quality of patients with these implants.Setting:Fisabio Oftalmología Médica, Valencia, Spain.Design:Randomized prospective study.Materials and Methods:The IOL optical quality was determined using the modulation transfer function (MTF) and the spectral transmission. The visual quality of 87 eyes with cataract (51 with orange filter and 36 with yellow filter) was determined by best corrected visual acuity (BCVA) and contrast sensitivity function (CSF) under photopic and mesopic conditions. To analyze the results, we use a Student's t-test.Results:Orange lens filtered more of the blue spectrum (cut-off wavelength of 370 nm) than the yellow lens (390 nm). The MTF of the yellow lens was better than the orange lens (average modulation of 0.676 for natural and 0.672 for orange). The patients’ BCVA was 0.02 + 0.10 logMAR for both lenses. The CSF obtained with the yellow lens was slightly better, although without statistically significant differences (P > 0.05).Conclusions:Both lenses are of good optical quality. The patients’ visual quality was similar with both lenses, and optical quality was also similar. The color of the lens does not affect the visual quality of the patient.

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“…The Orientation and Processing of Airborne Laser Scanning data Vector System (Image Science Ltd) was used applying Fast Fourier Transform techniques. [ 20 21 22 ]…”

Section: Methodsmentioning

confidence: 99%

Effect of the color of the intraocular lens on optical and visual quality

Dı́ez-Ajenjo

García-Domene²,

Peris-Martínez³

et al. 2014

Indian J Ophthalmol

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“…They are formed by two intraocular lenses (with positive and negative dioptric power) implanted into the eye after cataract surgery [7][8][9][10][11], or using a single lens that contains two mirrors forming a Cassegrain telescope [12]. At least three of these devices are in clinical use today.…”

Section: Introductionmentioning

confidence: 99%

“…There are some concerns about the size and the surgical procedure to implant the device (it requires a 10 to 11 mm limbal incision [13]) but it is the only intraocular telescope that has received FDA approval. The Intraocular Lens for Visually Impaired People system (IOL VIP; Soleko, Pontecorvo, Italy) [9,10] is a telescope formed by two separate IOLs implanted in the anterior chamber and in the capsular bag. It achieves a nominal magnification of 1.3X and induces some prismatic effect to deviate the central field to a healthier location of the macula.…”

Section: Introductionmentioning

confidence: 99%

An aspheric intraocular telescope for age-related macular degeneration patients

Tabernero¹,

Qureshi²,

Robbie³

et al. 2015

Biomed. Opt. Express

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Abstract:We have designed an intraocular telescope for the posterior chamber of the human eye of patients with age related macular degeneration. The basic design is composed of two decentered high optical power lenses ( + 66D and −66D) inducing a 3° prismatic effect to project a magnified central field of view into a healthier location off the central fovea. Aspheric surfaces were used to ensure a compromise between good optical quality and high tolerance to the final axial position of both lenses after surgery. With this particular design, the telescope affords an extended range of depth of focus, high tolerance to different axial lengths of the eye and robustness against typical values of astigmatism and higher order aberrations. The final design has been manufactured in a foldable material and is compact enough to facilitate surgical implantation. This telescope is a simple but promising intraocular visual aid for AMD patients. IMT-002 Study Group, "Implantable miniature telescope for the treatment of visual acuity loss resulting from end-stage age-related macular degeneration:

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“…Research into systems for human vision enhancement is being stimulated by interest in high mobility on-demand magnification for military, sports, and low-vision applications. In an attempt to treat bilateral end-stage age-related macular degeneration, low-magnification refractive telescopes [1][2][3][4][5] and a two-mirror reflective Cassegrain telescope [6] have been successfully implanted into the posterior chamber of patients' eyes. These visual prosthetic devices do not provide active switching between enhanced and normal unmagnified vision and rely on the patient developing an adaptation strategy for volitional eye selection, a processes that can be trained through the use of polarizing test spectacles [1].…”

Section: Introductionmentioning

confidence: 99%

Wink-controlled polarization-switched telescopic contact lenses

et al. 2015

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We describe a wink-controlled hands-free switching system for eye-borne telescopic vision, based on a previously tested fixed-magnification telescope embedded within scleral contact lenses. Here we integrate orthogonal polarizers into the contact lens covering the F/9.1 refractive 1× and F/9.6 catadioptric 2.8× vision paths, to allow switching via external liquid crystal shutters. We provide hands-free control by an infrared wink/blink monitor, using passive retroreflectors embedded within the contact lenses. We demonstrate system operation of the self-contained switching eyewear and the modified contact lenses with a life-size human eye model with mechanical "eyelids."

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Clinical magnification and residual refraction after implantation of a double intraocular lens system in patients with macular degeneration

Cited by 16 publications

References 17 publications

Effect of the color of the intraocular lens on optical and visual quality

Effect of the color of the intraocular lens on optical and visual quality

An aspheric intraocular telescope for age-related macular degeneration patients

Wink-controlled polarization-switched telescopic contact lenses

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