Blue light–filtering and violet light–filtering hydrophobic acrylic foldable intraocular lenses: Intraindividual comparison

Nakano, Shinichiro; Miyata, Akira; Kizawa, Junya; Kurosaka, Daijiro; Oshika, Tetsuro

doi:10.1016/j.jcrs.2019.05.027

Cited by 12 publications

(8 citation statements)

References 26 publications

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“…The aspheric anterior surface neutralizes the average spherical aberration in the eye, the improved high resolution lathing process decreases light scatter, and a violet-filtering chromophore is included to improve contrast sensitivity in dim light. 11 For the purposes of this manuscript the IOL is referred to as a hybrid technology IOL or HT IOL.…”

Section: Introductionmentioning

confidence: 99%

Visual Outcomes, Quality of Vision, Patient Satisfaction and Spectacle Independence After Bilateral Implantation of the Synergy™ Intraocular Lens

Rojas¹,

Sandoval²,

Potvin³

et al. 2023

OPTH

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Purpose To evaluate vision, visual quality, patient satisfaction and spectacle independence after bilateral implantation of the TECNIS Synergy™ intraocular lens. Setting Two clinical practices in the USA. Design Ambispective unmasked non-randomized clinical trial. Methods Patients with a history of uneventful bilateral femtosecond laser assisted cataract surgery with the study IOL implanted, targeted for emmetropia, at least 3 months prior to the study visit were enrolled. Monocular and binocular visual acuity (VA) were measured at distance, intermediate and near, along with binocular mesopic VA. Low contrast binocular VA and reading speed in mesopic and photopic conditions were also measured. Patient satisfaction, spectacle independence, visual symptoms, and functional vision questionnaires were completed. Results Results from 52 subjects were available for analysis. Mean binocular unaided visual acuity was ~0.1 logMAR (20/20) from distance to 33 cm, with 81% of subjects having 0.2 logMAR (20/25) vision or better at all test distances and 92% reporting never needing glasses at any distance. Average reading speed at 40 cm was only 10 words/minute slower in dim light (p = 0.03). Mesopic and low contrast acuity appeared good. Halos were the most frequent and bothersome visual disturbances, with the greatest effect on driving at night. Eighty-eight percent of subjects reported being “completely” or “mostly” satisfied with their overall unaided vision. Conclusion This hybrid technology IOL provided a range of binocular visual acuity from distance to 33 cm and good functional vision, even in dim light. Patients should be advised of the likelihood of visual disturbances, particularly halos.

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Section: Introductionmentioning

confidence: 99%

Visual Outcomes, Quality of Vision, Patient Satisfaction and Spectacle Independence After Bilateral Implantation of the Synergy™ Intraocular Lens

Rojas¹,

Sandoval²,

Potvin³

et al. 2023

OPTH

View full text Add to dashboard Cite

show abstract

“…However, these yellow-tinted IOLs can have negative effects on patients' contrast sensitivity, as they partially attenuate light within the visible spectrum. Especially the rod cell-mediated scotopic and mesopic vision relies also on the blue-light spectrum [7], Shinichiro et al compared surgery results with blue light-filtering IOLs and violet light-filtering IOLs [4]. Patients who had received a violet light-filtering IOL achieved 3 months after surgery better results in terms of contrast sensitivity under photopic and mesopic conditions when compared with patients who had received blue light-filtering IOLs [4].…”

Section: Discussionmentioning

confidence: 99%

“…whereas UV light from 300 to 400nm is usually absorbed in the crystalline lens depending on the degree of cataract. To prevent the retina from phototoxicity after cataract surgery, intraocular lenses (IOLs) with UV-light blocking properties are widely used in the clinic [4].…”

Section: Introductionmentioning

confidence: 99%

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Comparative Spectrophotometer Analysis of Ultraviolet-light Filtering, Blue-light Filtering, and Violet-light Filtering Intraocular Lenses

Park

Choi

2022

Korean J Ophthalmol

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Purpose: To compare the light transmittance property of seven currently used intraocular lens (IOL) models by spectrophotometer data.Methods: Light transmission spectra of seven IOL models were assessed with a spectrophotometer. The transmittance properties were analyzed in 1 nm units from 350 nm wavelength to 800 nm.Results: Three ultraviolet filtering IOL models (ZCB00, XC1-SP, and AT LISA 809M) showed nearly full transmittance of the light from 400 to 500 nm, while steeply attenuating light with shorter wavelengths in various degrees. Three blue-light filtering IOLs (yellow-tinted IOLs; XY1, SN60WF, and TNFT00) showed a slow-sloped increase of light transmission between 400 to 500nm. Among the three, XY1 showed different degree of inclination, showing a steeper slope than SN60WF and TNFT00. The violet-light filtering IOL (ZFR00V) showed a rapid increase of the transmission at around 435 nm wavelength, which is similar to ultraviolet filtering IOLs.Conclusions: The seven different IOLs measured showed different characteristics of light transmission depending on the properties of each material and color. Blue-light filtering IOLs tend to blocked a wide range of wavelength up to 500 nm, but rather were not effective at the range of 400 to 430 nm. Violet-light filtering IOL showed advantages in filtering the high-energy wavelength, around 430 nm, having a potential risk to retina and allowing the transmission of useful blue and green wavelength which is necessary for a better scotopic contrast sensitivity.

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“…Ultraviolet(UV) is a part of the electromagnetic spectrum with a wavelength range 10nm and a related frequency of 400nm, shorter than visible light, but longer than X-rays. In sunlight, UV radiation is present and represents around 10 percent of the overall generation of the electromagnetic radiation from the sun [3]. To most humans, ultraviolet rays are invisible.…”

Section: Introductionmentioning

confidence: 99%

Effect of Ultraviolet Radiation on Pseudomonas Aeruginosa, Staphylococcus Aureus and Enterococcus

Madhumitha

Muralidharan

2021

JPRI

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Background: The study of microorganism is called microbiology, which includes bacteria, viruses, fungi and Protozoa. Microbes play a major role in this field. Microbes are also used for life-saving drugs etc.. The effect of ultraviolet rays on the bacterias are mostly lethal to them, UV is a minor fraction of the solar spectrum reaching the ground surfaces, the UV light radiation will reduce the microbes in the surroundings as well as in the labs. Aim: The aim of this study was to evaluate the effect of the ultraviolet rays on pathogenic bacterias. Materials and methods: Three organisms were selected for the study. Pseudomonas, S. Aureus and Enterococcus. 30 watts Uv tube was used to evaluate the antibacterial activity of the Uv radiation. The exposure time was determined as 5, 10 and 15 mins at a close distance of 10cm. 20 microliter of suspension was taken and mixed in 2 ml of sterile normal saline and exposed for respective duration. Sub culture was done on suitable media after the exposure . Time exposed plates were incubated at 37 degree Celsius overnight and checked for the total CFU and data were tabulated. Results: The Ultraviolet radiation of pathogenic bacteria resulted in a significant reduction of the total colony forming unit. Conclusion: Ultraviolet rays were lethal to the bacterias. There are many airborne bacterias surrounded by environment ultraviolet rays exposure will cause an apparent decrease in the pathogenic bacterias.

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Blue light–filtering and violet light–filtering hydrophobic acrylic foldable intraocular lenses: Intraindividual comparison

Cited by 12 publications

References 26 publications

Visual Outcomes, Quality of Vision, Patient Satisfaction and Spectacle Independence After Bilateral Implantation of the Synergy™ Intraocular Lens

Visual Outcomes, Quality of Vision, Patient Satisfaction and Spectacle Independence After Bilateral Implantation of the Synergy™ Intraocular Lens

Comparative Spectrophotometer Analysis of Ultraviolet-light Filtering, Blue-light Filtering, and Violet-light Filtering Intraocular Lenses

Effect of Ultraviolet Radiation on Pseudomonas Aeruginosa, Staphylococcus Aureus and Enterococcus

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