Explanipedia

Lens shape confirmed in light adjustable lens: A report of two cases Open

Yukihito Kato, Kei Ichikawa, Yoshiki Tanaka, Yukihiro Sakai, Kazuo Ichikawa · 2025

The findings in Case 1 highlighted a change in shape while maintaining a spherical lens shape, while in Case 2, the change in asymmetric shape may have occurred to correct astigmatism on the back of the LAL. Taken together, these findings …

Evaluation of the Insertion Depth of the iStent Inject W and Its Association with Surgical Outcomes Using Automated Gonioscopy Open

Y Takagi, Ryo Asano, Kana Yamashita, AKIMITSU MIWA, Yukihiro Sakai , et al. · 2025

Background/Objectives: The iStent is a trabecular micro-bypass device used in glaucoma management. Its depth has been evaluated using anterior segment optical coherence tomography; however, no reports have assessed it using gonioscopy. We …

Clinical performance of a hydrophobic acrylic toric intraocular lens with a double C-loop haptics in Japanese patients Open

Yosai Mori, Kazunori Miyata, Takashi Kojima, Kazuo Ichikawa, Yoshifumi Fujita , et al. · 2025

Purpose To evaluate the clinical performance of a hydrophobic acrylic toric intraocular lens (IOL) with double C-loop haptics in a Japanese population with cataracts. Study design Prospective Methods The PODEYE TORIC IOL (POD T 49P) was im…

Study on Factors Affecting Toric Intraocular Lens Rotation Using Intraoperative OCT—Factors Influencing IOL Deployment and Proximity to Posterior Capsule After Insertion Open

Kei Ichikawa, Seiji Tokiwa, Yoshiki Tanaka, Hiroto Toda, Yukihito Kato , et al. · 2025

Background/Objectives: Cataract surgery often reveals preexisting corneal astigmatism, which can be corrected using a toric intraocular lens (T-IOL). However, postoperative T-IOL rotation may compromise correction. We investigated T-IOL ro…

Comparison of angle-closure detection between automated gonioscopy and anterior-segment optical coherence tomography Open

Y Takagi, Ryo Asano, Yasuki Morioka, Yukihiro Sakai, Sho Yokoyama , et al. · 2025

Purpose To investigate the concordance between angle-closure assessments based on GS-1 gonioscope images and those obtained with anterior-segment optical coherence tomography. Study design Retrospective clinical study . Methods We included…

Comparison of Adhesion of Immortalized Human Iris-Derived Cells and Fibronectin on Phakic Intraocular Lenses Made of Different Polymer Base Materials Open

Kei Ichikawa, Yoshiki Tanaka, Rie Horai, Yu Kato, Kazuo Ichikawa , et al. · 2025

Background and Objectives: Posterior chamber phakic implantable contact lenses (Phakic-ICL) are widely used for refractive correction due to their efficacy and safety, including minimal corneal endothelial cell loss. The Collamer-based EVO…

Evaluation of visual function within the central 10 degrees using IMOvifa™ 24plus (1-2) Open

Y Takagi, Ryo Asano, Kana Yamashita, Yukihiro Sakai, Sho Yokoyama , et al. · 2025

Purpose The IMOvifa™ perimeter with a 24plus (1-2) testing mode has additional measurement points within the central 10 degrees, which may help evaluate the visual field within this area. Here, we comparatively evaluated the IMOvifa™ 24plu…

Comparison of IMO vifa24plus(1-2) and Humphrey Field Analyzer 24-2 Open

Yuki Takagi, Ryo Asano, Kazuo Yamashita, Yukihiro Sakai, Sho Yokoyama , et al. · 2025

The IMO vifa demonstrates a very high correlation with HFA and allows for a shorter examination time. Fixation errors are significantly improved compared to HFA, while there is no significant difference in false positives or false negative…

A Multicenter Study on Clinical Outcomes of Simultaneous Implantable Collamer Lens Removal and Phacoemulsification with Intraocular Lens Implantation in Eyes Developing Cataract Open

Kazutaka Kamiya, Kimiya Shimizu, Yoshihiro Kitazawa, Takashi Kojima, Tomoaki Nakamura , et al. · 2024

Our multicenter study showed that simultaneous ICL removal and phacoemulsification with IOL implantation is a safe, effective, and predictable procedure, with no significant complications, making it a feasible option for ICL-implanted eyes…

Comparison of accuracy and axial length acquisition success rate by three types of swept-source OCT-based biometers Open

Yukihito Kato, Masahiko Ayaki, Yoshiki Tanaka, Akeno Tamaoki, Yukihiro Sakai , et al. · 2024

Purpose: To compare three biometers equipped with swept-source optical coherence tomography (OCT), including ARGOS (OCTB1), IOLMaster 700 (OCTB2), and Anterion (AS-OCTB). The primary aim was to assess the axial length (AL) acquisition succ…

Comparison of Phacoemulsification and Aspiration Parameters in Cataract Surgery: Metal Tip vs. Hybrid Tip Open

Kazuo Ichikawa, Kei Ichikawa, Seiji Tokiwa, Yuki Sato, Tomoyuki Miyazaki , et al. · 2024

Various tips are available for phacoemulsification in cataract surgery. Evidence-based data can inform ophthalmologists, especially inexperienced ones, on tip selection. We retrospectively evaluated the energy efficiency and other paramete…

Near Add Power of Glaucoma Patients with Early Presbyopia Open

Masahiko Ayaki, Kazuo Ichikawa · 2024

Purpose: Glaucoma medication may accelerate the progression of presbyopia. The aim of this study was to compare presbyopia between controls and patients with glaucoma in their 40s. Methods: This was a cross-sectional study of bilateral pha…

Effect of Intraocular Lens Power Calculation Formula Optimization in the Sum-of-Segments Optical Biometer Open

Takashi Kojima, Akeno Tamaoki, Kazuo Ichikawa, Yuya Satoh, Ryota Tomemori , et al. · 2024

In long and short eyes, the current study revealed that optimization of the SRK/T and Barrett formula constants for the SRI biometer was beneficial to achieve accurate refractive outcomes after cataract surgery.

Retraction Note: Posterior chamber phakic intraocular lens implantation after laser in situ keratomileusis Open

Kazutaka Kamiya, Kimiya Shimizu, Akihito Igarashi, Yoshihiro Kitazawa, Takashi Kojima , et al. · 2024

Accuracy of new intraocular lens power calculation formula for short and long eyes using segmental refractive indices Open

Yukihito Kato, Masahiko Ayaki, Akeno Tamaoki, Yoshiki Tanaka, Kei Ichikawa , et al. · 2024

Purpose: To evaluate the accuracy of a new intraocular lens power calculation formula using segmental refractive index-based axial length (AL). Setting: Chukyo Eye Clinic, Nagoya, Japan. Design: Retrospective observational study. Methods: …

Accuracy of the Majority Voting Method with Multiple IOL Power Formulae Open

Yukihito Kato, Takashi Kojima, Akeno Tamaoki, Yoshiki Tanaka, Naoki Yamamoto , et al. · 2024

The proposed majority decision algorithm incorporating IA and two IOL frequency formulas was effective in reducing postoperative refractive error. IA was particularly beneficial for eyes with long axial length. These findings suggest the a…

Gender-based differences in the job titles and lifestyles in the cataract and refractive surgery society in Japan Open

Naoko Kato, Takashi Kojima, Masayuki Ouchi, Tomoaki Nakamura, Yoshihiro Tokuda , et al. · 2023

To investigate sex differences in the titles and lifestyles of Japanese ophthalmologists, we evaluated work places and private lives. Retrospective cross-sectional study. The study included 1721 members (1344 males and 377 females) of the …

Comparison of INTREPID® balanced and hybrid tips on anterior capsule rupture in ex vivo porcine eyes Open

Kei Ichikawa, Yoshiki Tanaka, Seiji Tokiwa, Airi Naito, Yuji Hidaka , et al. · 2023

Phacoemulsification has emerged as the global standard for cataract surgery, and various novel methods, tools, and agents have promoted surgical efficiency and reduced complications. Conventionally, the phaco tip, which cleaves and aspirat…

Color visual field measurements for detecting glaucoma Open

Hiroyuki Sato, Hiroshi Kunikata, Yoshiki Tanaka, Kazuko Omodaka, Noriko Himori , et al. · 2023

This study evaluated the difference between glaucoma and normal eyes using a color visual field (CVF) test. Thirty-seven eyes of 37 normal subjects (mean age 56.6±12.0 years) and 39 eyes of 39 patients with glaucoma (mean age 57.1±11.3 yea…

Flexural and Cell Adhesion Characteristic of Phakic Implantable Lenses Open

Kazuo Ichikawa, Kei Ichikawa, Naoki Yamamoto, Rie Horai · 2023

Background and Objectives: In this study, we aimed to compare the physical properties of hole-implantable collamer lenses (H-ICLs) and implantable phakic contact lenses (IPCLs) and investigate their flexural and cell adhesion characteristi…

Comparison of the efficacy and invasiveness of manual and automated gonioscopy Open

Yuki Takagi, Masao Watanabe, Takashi Kojima, Yukihiro Sakai, Ryo Asano , et al. · 2023

Purpose To compare the efficacy and invasiveness of manual gonioscopy and automated 360-degree gonioscopy. Method Manual and automated gonioscopy were performed on 70 patients with glaucoma. Manual gonioscopy was performed by a glaucoma sp…

Clinical Performance of a Hydrophobic Acrylic Diffractive Trifocal Intraocular Lens in a Japanese Population Open

Yosai Mori, Kazunori Miyata, Hisaharu Suzuki, Santaro Noguchi, Kazuo Ichikawa , et al. · 2022

A Nationwide Multicenter Study on 1-Year Outcomes of Posterior Chamber Phakic Intraocular Lens Implantation for Low Myopia Open

Kazutaka Kamiya, Kimiya Shimizu, Akihito Igarashi, Yoshihiro Kitazawa, Takashi Kojima , et al. · 2022

Purpose To assess the nationwide multicenter outcomes of posterior chamber phakic intraocular lens implantation with a central hole (EVO-ICL, STAAR Surgical) for patients with low myopia. Methods This multicenter study comprised 172 eyes o…

RETRACTED ARTICLE: Posterior chamber phakic intraocular lens implantation after laser in situ keratomileusis Open

Kazutaka Kamiya, Kimiya Shimizu, Akihito Igarashi, Yoshihiro Kitazawa, Takashi Kojima , et al. · 2022

Multicenter clinical outcomes of hole implantable collamer lens implantation in middle-aged patients Open

Akihito Igarashi, Kazutaka Kamiya, Kazuo Ichikawa, Yoshihiro Kitazawa, Takashi Kojima , et al. · 2022

Multicenter survey on implantable collamer lens dislocation Open

Takashi Kojima, Yoshihiro Kitazawa, Tomoaki Nakamura, Kazutaka Kamiya, Kazuo Ichikawa , et al. · 2022

This study aimed to investigate the incidence, patient background, and postoperative prognosis of implantable collamer lens (ICL) dislocation. We retrospectively reviewed all cases of ICL dislocation at four major refractive surgery center…

Treatment of old submacular hemorrhage by subretinal endoscopic surgery and intraoperative subretinal endoscopic findings Open

Sho Yokoyama, Tatsushi Kaga, Takashi Kojima, Jorge Orellana-Rios, R. Theodore Smith , et al. · 2022

Rotational stability and clinical outcomes of a new one piece toric intraocular lens with anchor-wing haptics Open

Iichiro Sugita, Tomoichiro Ogawa, Kazuo Ichikawa, Takahide Okita, Kazuno Negishi , et al. · 2022

Refractive Errors after Cataract Surgery Using Total Keratometry in Post-LASIK Eyes Open

Akane Nishimura, Yukihiro Sakai, Takashi Kojima, Akeno Tamaoki, Kazuo Ichikawa · 2022

【目的】LASIK後眼に対しTotal Keratometry（TK）を用いたLASIK用IOL度数計算式と従来式による予測屈折誤差を比較し、TKの有用性を評価する。

Age-related changes of color visual acuity in normal eyes Open

Sho Yokoyama, Yoshiki Tanaka, Takashi Kojima, Rie Horai, Yukihito Kato , et al. · 2021

Purpose To evaluate the age-related change in color visual acuity (CVA) in normal eyes. Methods In total, 162 normal eyes (162 subjects, women: 52, men: 110, age range: 15–68 years) with best-corrected visual acuity (BCVA) ≥20/13 were enro…

Kazuo Ichikawa YOU? Author Swipe