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1.
Jpn J Ophthalmol ; 2024 Jul 31.
Artículo en Inglés | MEDLINE | ID: mdl-39083148

RESUMEN

PURPOSE: To investigate the surgical outcomes of intrascleral intraocular lens (IOL) fixation using a modified extraocular forceps-guided technique. STUDY DESIGN: Retrospective case series. METHODS: Overall, 81 eyes of 78 patients who underwent intrascleral IOL fixation using the modified extraocular forceps-guided technique were included. The procedure entailed creating 2 scleral half-layer T-shaped incisions perpendicular to the main incision and forming a scleral tunnel. A 25-gauge trocar was inserted at the lower end of the T-shaped incision to perform vitrectomy. A 27-gauge needle was inserted from the left-hand port, and the leading haptic was inserted into the needle lumen. After removal of the right-hand trocar, a 90°-curved intrascleral fixation forceps was inserted into the eye, exposing the tip at the main incision, thus allowing the tip of the extraocular trailing haptic to be gripped and both haptics to be pulled out. The left-hand trocar was removed, and the haptics were buried in the scleral tunnel. The surgical outcomes of this technique were retrospectively evaluated on the basis of the medical records. RESULTS: The induction of haptics was successful in all cases. The preoperative best-corrected visual acuity improved from 0.35±0.68 to 0.12±0.36 logMAR postoperatively (P<0.01). The refractive error was -0.27±0.87 D; IOL decentration, 0.39±0.18 mm; IOL tilt, 5.97±2.65°; IOL astigmatism, 0.35±0.36 D; and corneal endothelial cell loss, 10.3±12.7%. There were no serious complications related to the surgical technique. CONCLUSION: The modified extraocular forceps-guided technique allows for safe and straightforward induction of the trailing haptics and enables the performance of intrascleral IOL fixation with minimal scleral incisions.

2.
Am J Ophthalmol Case Rep ; 20: 100908, 2020 Dec.
Artículo en Inglés | MEDLINE | ID: mdl-33251374

RESUMEN

PURPOSE: To report clinical course of a patient with cancer-associated retinopathy (CAR) medicated by steroid therapy, focusing on retinal degeneration progression. OBSERVATIONS: A 67 years-old female patient, who had a surgical history of endometrial carcinoma with adjuvant chemotherapy, was referred to our hospitals for the complaints of sudden reduced visual acuity and visual field constriction in the right eye. Best corrected visual acuity (BCVA) was 0.4 and 1.0 in right and left eyes, respectively. Funduscopy showed almost normal appearance in both eyes. Fluorescein angiography showed slight fluorescein leakage from the optic disc in both eyes and an inferior arcade vessel in the right eye. Optical coherence tomography (OCT) images showed loss of ellipsoid zone (EZ) and thinning of outer retinal layers at the nasal area of the fovea in both eyes. Goldmann perimetry (GP) demonstrated several paracentral absolute scotomas with peripheral visual field constriction in the right eye, and a paracentral relative scotoma with preserved peripheral visual field in the left eye. Ten months after the first visit, retinopathy progressed in both eyes. Funduscopy indicated mild retinal degeneration along with arcade veins with white sheathing of retinal arteries. Slightly visible EZ at the fovea and loss of EZ and interdigitation zone and thinning of outer retinal layers at other areas were observed in OCT images from both eyes. GP showed no response in both eyes. Oral prednisolone therapy was started and gradually tapered over a 3-month period. Twelve and fifteen months after the first visit, BCVA, EZ at the fovea in OCT images, and visual field gradually improved, whereas retinal degeneration along arcade veins became apparent. CONCLUSIONS AND IMPORTANCE: We reported a patient with CAR who exhibited progressive retinal degeneration and good response to oral prednisolone therapy. This case expands the clinical spectrum of CAR.

3.
J Cataract Refract Surg ; 41(3): 598-606, 2015 Mar.
Artículo en Inglés | MEDLINE | ID: mdl-25708209

RESUMEN

PURPOSE: To report the intermediate-term results of capsule stabilization for scleral fixation with implantation of the Yaguchi hook, a modified capsule expander stabilization hook. SETTING: Department of Ophthalmology, School of Medicine, University of Showa, Fujigaoka Rehabilitation Hospital, Yokohama, Japan. DESIGN: Retrospective case series. METHODS: Patients with zonular dialysis and phacodonesis were followed postoperatively for at least 2 years. All eyes had phacoemulsification and aspiration using an ordinary capsule expander and in-the-bag implantation of an intraocular lens (IOL). Capsule expanders were removed after the residual cortex was removed, and the capsular bag was fixated to the scleral wall via the ciliary sulcus using the modified capsule expander stabilization hook. Preoperative findings, intraoperative complications, and postoperative courses were examined. RESULTS: The mean age of the 11 patients (11 eyes) was 72.2 years ± 10.5 (SD); 5 patients were men. The mean postoperative follow-up was 48.6 ± 13.6 months. The zonular dialysis range was 90 to 180 degrees in 1 eye, 180 degrees in 4 eyes, and 180 to 270 degrees in 1 eye. In 5 eyes, severe phacodonesis was observed without obvious zonular dialysis. In all eyes, the capsular bag and IOL were well centered without severe intraoperative or postoperative complications. CONCLUSION: The modified capsule expander stabilization hook provided good centration and stabilization of the capsule-IOL complex in eyes with severely weak zonular fibers. FINANCIAL DISCLOSURE: Dr. Yaguchi, who is the inventor of the modified capsule expander, has received financial support from Handaya, Tokyo, Japan. No other author has a financial or proprietary interest in any material or method mentioned.


Asunto(s)
Cápsula del Cristalino/cirugía , Implantación de Lentes Intraoculares , Subluxación del Cristalino/cirugía , Facoemulsificación/instrumentación , Implantación de Prótesis , Anciano , Anciano de 80 o más Años , Segmento Anterior del Ojo/patología , Femenino , Estudios de Seguimiento , Humanos , Complicaciones Intraoperatorias , Masculino , Persona de Mediana Edad , Estudios Retrospectivos , Tomografía de Coherencia Óptica , Agudeza Visual/fisiología
4.
J Cataract Refract Surg ; 37(8): 1386-93, 2011 Aug.
Artículo en Inglés | MEDLINE | ID: mdl-21782084

RESUMEN

We describe a T-shaped capsule stabilization hook (modified capsule expander [M-CE]) used for repositioning and scleral fixation of the lens capsule of subluxated lenses. The 5-0 polypropylene device is flexible and attached to a curved needle. The contact portion is bent at 1.25 mm, and the end bifurcates in a T configuration to form a 3.75 mm footpad from which the capsular bag can be suspended. Modified capsule expanders were implanted in 4 eyes of 4 patients with subluxated cataractous lenses and provided excellent support and centration of the intraocular lens (IOL)-capsular bag complex. The IOLs remained well centered and stable. The corrected distance visual acuity improved to at least 20/20 in all patients after surgery. Thus, M-CEs were effective in fixating the lens capsule to the sclera in patients with significant zonular weakness.


Asunto(s)
Capsulorrexis/instrumentación , Cápsula del Cristalino/cirugía , Subluxación del Cristalino/cirugía , Esclerótica/cirugía , Anciano , Anciano de 80 o más Años , Femenino , Humanos , Implantación de Lentes Intraoculares , Masculino , Facoemulsificación , Reoperación , Técnicas de Sutura
5.
Pathophysiology ; 15(3): 157-66, 2008 Oct.
Artículo en Inglés | MEDLINE | ID: mdl-18486457

RESUMEN

The presence of hypertension and hyperlipidemia accelerates atherosclerosis and increases the risk of ocular disease. Since there were few rat models for atherosclerosis, spontaneously hypertensive rats (SHRs) and spontaneously hyperlipidemic rats (HLRs) were crossbred to obtain a new model: the spontaneously hypertensive hyperlipidemic rat (SHHR). Matrix metalloproteinases (MMPs) play an important role in ocular degeneration. The purpose of this study is to investigate changes in the MMP activities in vitreous and plasma as well as MMP expression in the retinas of SHHRs, which served as a model of vascular degeneration. We used 8-month-old Wistar-Kyoto (WKY) rats and Sprague-Dawley (SD) rats, SHRs, HLRs, and SHHRs. The MMP-2 and MMP-9 activities in plasma and vitreous were examined by zymography. The mRNA expression of MMP-2, MMP-9, and tissue inhibitor of metalloproteinases-3 (TIMP-3) in retina was examined by quantitative PCR. The localized expression of MMP-9 in the retinas was examined by immunostaining. The MMP-9 activity increased significantly in SHHRs compared with all other rats. MMP-9 was observed mainly at the superficial layer of the retina on immunostaining. The MMP-2, MMP-9, and TIMP-3 mRNA in retina was not significantly different in SHHRs as compared with all other rats. Increased MMP-9 activity in vitreous was influenced more intensely from plasma than retina because there was no change in MMP-9 expression in retina, and MMP-9 immunostaining was observed mainly at the surface of the retina, where blood vessels are present. In this study, the complications of hypertension and hyperlipidemia induced increased MMP-9 activity in vitreous and plasma. It is therefore suggested that MMP-9 may be involved in causing this result and in the development of retinal disease.

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