Geometric-phase intraocular lenses with multifocality

Lee, Seungmin; Park, Gayeon; Kim, Seon Ho; Ryu, Yeonghwa; Yoon, Jae Woong; Hwang, Ho Sik; Song, In Seok; Lee, Chang Sun; Song, Seok Ho

doi:10.1038/s41377-022-01016-y

Cited by 7 publications

(5 citation statements)

References 60 publications

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“…Photo-aligned LC cell, embodying the geometric phase proportional to the local optic axis orientation, are especially well suited for large scale fabrication because the dedicated nanoscale photo-lithography is not necessary; moreover, one can leverage many common technologies in the flat-panel display industry, which are well understood, highly stable and commercially available. Hence, polarization holography, which can generate pure periodic change of linearly-polarized optical field, is a particular powerful photo-alignment method for generating diffractive GP LC waveplate [18][19][20][21].…”

Section: Introductionmentioning

confidence: 99%

Geometric phase device writing on a nematic LC cell by using polarization holography

Nguyen Hong Minh,

Petrov,

Marinova

et al. 2023

Photonic Fiber and Crystal Devices: Advances in Materials and Innovations in Device Applications XVII

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In this paper, we propose to fabricate the Geometric Phase (GP) optical device in a Nematic Liquid Crystal cell (NLC cell) by using photo-alignment technique with poly [1- [4-(3-carboxy-4-hydroxyphenylazo)benzenesulfonamido]-1,2- ethanediyl, sodium salt] azo-polymer (PAZO) as alignment layer. During fabrication, the necessary surface alignment pattern of GP modulations for the device is firstly created and written on the PAZO films of an empty cell by using polarization holographic method. With filling E7 LC molecule, GP grating and lens are formed. The design principle, fabrication and characterization of both GP diffractive grating and lens are presented. The results show that the device can appear as a polarization-selective transmission hologram with single diffractive order, although the thickness of cell is 5 μm. In addition, the polarization state and wavefront of diffracted wave can be converted simultaneously. Thus, the device can be named as the diffractive waveplate, which provides many unique photonic applications, becoming effective way for minimizing and integrating optical devices for a photonic modular.

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Section: Introductionmentioning

confidence: 99%

Geometric phase device writing on a nematic LC cell by using polarization holography

Nguyen Hong Minh,

Petrov,

Marinova

et al. 2023

Photonic Fiber and Crystal Devices: Advances in Materials and Innovations in Device Applications XVII

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“…At present, LC lenses are finding applications in many dissimilar fields, such as vision (e.g., eyeglasses [16], contact lenses [17], and intraocular lenses [18]), adaptive optics for astronomy [19], or wearable devices [20], in addition to their traditional applications as tunable lenses for consumer photonics [21,22].…”

Section: Introductionmentioning

confidence: 99%

Optimizing Tunable LC Devices with Twisted Light

Otón,

Pereiro-García,

Quintana

et al. 2023

Crystals

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Tunable circular devices made of liquid crystals or other materials, like lenses, axicons, or phase plates, are often constrained by limitations in size, tunability, power, and other parameters. These constraints restrict their use and limit their applicability. In this review, a thorough study of the use of light’s orbital angular momentum in the manufacturing of liquid crystal (LC) devices is presented. Twisted light fosters the simultaneous optimization of most critical parameters. Experimental demonstrations of the unmatched performance of tunable LC lenses, axicons, and other elements in parameters such as lens diameter (>1″), power and tunability (>±6 diopters), fill factor (>98%), and time response have been achieved by reversible vortex generation created by azimuthal phase delay. This phase delay can eventually be removed within the optical system so that lens performance is not affected.

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“…23 However, there is also a percentage of loss of light, which contributes to lower quality of vision, especially in scotopic and mesopic conditions. 24,25 Further studies comparing the outcomes of multifocal IOL implantation in high, moderate, and low myopia are needed to understand its impact on the vision quality.…”

mentioning

confidence: 99%

Long-Term Refractive Outcomes and Visual Quality of Multifocal Intraocular Lenses Implantation in High Myopic Patients: A Multimodal Evaluation

Castro,

Ribeiro,

Couto

et al. 2024

OPTH

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To perform a multimodal assessment of refractive outcomes and quality of vision (QoV) in patients with high myopia submitted to multifocal intraocular lens (IOL) implantation. Methods: Retrospective study that included consecutive eyes with high myopia (axial length [AL] >26.00mm) submitted to multifocal IOL implantation between January 2014 and February 2020. Minimum follow-up time was 3 years. QoV was evaluated with the Objective Scatter Index (OSI) and the Modular Transfer Function (MTF) by HD Analyzer ® . Two QoV questionnaires were applied to patients in which both eyes were included: the McAlinden and the Catquest-9 SF. Results: We included 50 eyes (28 patients). The mean follow-up time was 5.4±1.0 years. Comparing to month 1 after surgery, at the last follow-up visit, there was a decrease in the uncorrected visual acuity (0.14±0.13 vs 0.08±0.09 LogMAR, p=0.024), a negative increase in the spherical equivalent (−0.31±0.60 vs −0.02±0.20, p=0.006) and no changes in the best-corrected visual acuity (p>0.999). An uncorrected near visual acuity of at least J2 was achieved in 89% of eyes one month after surgery and in 91% of eyes at the last follow-up visit (p=0.829). At the last follow-up, the mean OSI was 5.1±1.8 and the mean MTF was 17.5±10.6. Some degree of near vision difficulty was reported by 91% of patients, and 74% of patients reported photic phenomena (halos, glare, starbursts). However, most patients reported that these symptoms caused none to little bothersome. At the last follow-up, 87% of patients were at least fairly satisfied with the surgery. Conclusion: Even after a mean follow-up time of 5 years, patients maintained good uncorrected visual acuity. Even though most patients experienced some degree of near vision difficulty and visual symptoms, globally, our patients were satisfied with their current vision, and the experienced symptoms did not have a significant impact on their daily lives.

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Geometric-phase intraocular lenses with multifocality

Cited by 7 publications

References 60 publications

Geometric phase device writing on a nematic LC cell by using polarization holography

Geometric phase device writing on a nematic LC cell by using polarization holography

Optimizing Tunable LC Devices with Twisted Light

Long-Term Refractive Outcomes and Visual Quality of Multifocal Intraocular Lenses Implantation in High Myopic Patients: A Multimodal Evaluation

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