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Lens luxation

Alexandre Guyonnet, Elise Donzel, Aurélie Bourguet, Sabine Chahory
OBJECTIVE: To describe the epidemiology and the clinical presentation of cataracts in a population of cats in France. PROCEDURES: A review of medical records of cats presented to the Ophthalmology Unit of the National Veterinary School of Alfort between January 2010 and June 2017 was carried out to identify cats affected by cataracts. The signalment of affected cats, medical history, etiology of cataract, age of onset, stage of development, location of opacities, and concurrent ocular lesions were evaluated...
March 6, 2018: Veterinary Ophthalmology
Rodolfo Gialletti, Andrea Marchegiani, Tiziana Valeriani, Sara Nannarone, Francesca Beccati, Alessandro Fruganti, Fulvio Laus
PURPOSE: To describe the association of clinical and ultrasonographic (US) findings in horses affected by visual impairments, to estimate the most frequent ultrasonographic alteration as well importance and limits of US as a part of ophthalmic evaluation in equine patients. METHODS: One-hundred-forty-five horses referred to the Veterinary Teaching Hospitals of the University of Perugia and Camerino for ocular problems were submitted to ophthalmic examination and ocular ultrasound...
March 2018: Journal of Ultrasound
Mihori Kita, Yuki Mori, Sachiyo Hama
Purpose: To introduce a hybrid wide-angle viewing-endoscopic vitrectomy, which we have reported, using a 3D visualization system developed recently. Subjects and methods: We report a single center, retrospective, consecutive surgical case series of 113 eyes that underwent 25 G vitrectomy (rhegmatogenous retinal detachment or proliferative vitreoretinopathy, 49 eyes; epiretinal membrane, 18 eyes; proliferative diabetic retinopathy, 17 eyes; vitreous opacity or vitreous hemorrhage, 11 eyes; macular hole, 11 eyes; vitreomacular traction syndrome, 4 eyes; and luxation of intraocular lens, 3 eyes)...
2018: Clinical Ophthalmology
James A C Oliver, Sophie Rustidge, Louise Pettitt, Christopher A Jenkins, Fabiana H G Farias, Elizabeth A Giuliano, Cathryn S Mellersh
OBJECTIVE To evaluate the coding regions of ADAMTS17 for potential mutations in Chinese Shar-Pei with a diagnosis of primary open-angle glaucoma (POAG), primary lens luxation (PLL), or both. ANIMALS 63 Shar-Pei and 96 dogs of other breeds. PROCEDURES ADAMTS17 exon resequencing was performed on buccal mucosal DNA from 10 Shar-Pei with a diagnosis of POAG, PLL, or both (affected dogs). A candidate causal variant sequence was identified, and additional dogs (53 Shar-Pei [11 affected and 42 unaffected] and 95 dogs of other breeds) were genotyped for the variant sequence by amplified fragment length polymorphism analysis...
January 2018: American Journal of Veterinary Research
Rick F Sanchez, Richard Everson, Joanna Hedley, Charlotte Dawson, Richard Lam, Simon L Priestnall, Alejandra Garcia de Carellan, Cristina de Miguel, Christopher Seymour
OBJECTIVE: To describe the presentation of 15 rabbits with naturally occurring cataracts referred for phacoemulsification surgery, the procedure in 13 cases and the follow-up in 12. ANIMALS INCLUDED: Fifteen rabbits (30 eyes), nine of which stopped following visual cues in association with cataract progression. MATERIALS AND METHODS: Rabbits underwent preoperative ophthalmic and ocular ultrasound examination. RESULTS: Thirteen rabbits (22 eyes) had mature cataracts...
December 4, 2017: Veterinary Ophthalmology
Frederick A Jakobiec, Lina Ma, Natalie Wolkow, J Douglas Cameron, Amanda C Maltry
PURPOSE: To analyze 3 unusual mesenchymal transformations within the eye: adipose or osseous metaplasia of the lens and adipose tissue in the vitreous cavity. DESIGN: Observational case series. METHODS: Reevaluation of clinicopathologic diagnoses and histopathologic findings in sections stained with hematoxylin-eosin, periodic acid-Schiff (PAS) reaction, and Masson trichrome method. RESULTS: The 3 cases of mesenchymal transformation occurred in microphthalmic eyes with persistent hyperplastic primary vitreous (more recently termed persistent fetal vasculature)...
February 2018: American Journal of Ophthalmology
Justus G Garweg, Souska Zandi, Isabel B Pfister, Magdalena Skowronska, Christin Gerhardt
PURPOSE: To compare the cyto- and chemokine profiles in the aqueous humor of PEXS eyes in the absence or presence of secondary glaucoma with or without luxation of the intraocular lens (IOL). METHODS: Samples of aqueous humor were collected intraoperatively from 20 healthy controls and from 73 eyes with PEX-syndrome, which was manifested in the absence of any other local or systemic desease. The latter group was sub-devided into eyes with an early form of PEX-syndrome in the absence of complications (PEX, n = 33), those with a late form of PEX-syndrome and glaucoma (PEXG, n = 30), and those with a late form of PEX-syndrome with luxation of the IOL that required surgery (PEXL, n = 10)...
2017: PloS One
Janelle M Belanger, Thomas P Bellumori, Danika L Bannasch, Thomas R Famula, Anita M Oberbauer
BACKGROUND: Gonadectomy, or neutering, is a very common surgery for dogs having many positive effects on behavior, health, and longevity. There are also certain risks associated with neutering including the development of orthopedic conditions, cognitive decline, and a predisposition to some neoplasias. This study was designed specifically to identify if a correlation exists between neuter status and inherited conditions in a large aggregate cohort of dogs representing many different breeds...
2017: Canine Genetics and Epidemiology
Miltiadis Fiorentzis, Anja Viestenz, Jens Heichel, Berthold Seitz, Thomas Hammer, Arne Viestenz
Ocular trauma can lead to severe visual impairment and morbidity, depending on the anatomical structures affected. The main causes of ocular trauma include foreign bodies, impact by an object, falls, and chemicals. Most ocular traumas occur in children or young male adults. A meticulous slit lamp examination is crucial for assessing all anatomical structures. Trauma to the crystalline lens can result in dislocation, an intralenticular foreign body, cataract, fragmentation, and capsular breach. An intraocular lens (IOL) can endure subluxation or luxation under the conjunctiva, into the anterior chamber or the vitreous, or can be extruded...
January 2018: Clinical Anatomy
A Hammer, T J Wolfensberger
Purpose To present a novel and simplified surgical technique of Artisan lens implantation for intraocular lens luxation and aphakia in glaucoma patients with previous superior filtration surgery. Methods Analysis of 12 patients with a history of previous superior filtration surgery for glaucoma, who underwent artisan lens implantation. To allow lens manipulation and implantation without alteration of the filtration bleb, the main sclerocorneal incision was performed laterally and the Artisan lens was held in place for enclavation of the iris stroma via a superior corneal incision without disturbing the filtration bleb...
April 2017: Klinische Monatsblätter Für Augenheilkunde
Kenichi Kohzaki, Hisato Gunji, Hiroshi Tsuneoka
To present a combination technique for two cases of in-the-bag intraocular lens (IOL) luxation into the vitreous cavity. Vitrectomy was performed via a cornea microincision vitrectomy system, and the luxated IOL was fixed into the sclera. IOL fixation is simple from no trocar cannulas and less disrupted conjunctiva. Postoperative corneal endothelial cell density in Case 1 and Case 2 were reduced by -2.1% and -5.1%, respectively. Postoperative frequency of hexagon was decreased in Case 1 but maintained in Case 2...
March 1, 2017: Ophthalmic Surgery, Lasers & Imaging Retina
Germán Espil, Jairo Hernández Pinzón, Nebil Larrañaga, Shigeru Kozima
No abstract text is available yet for this article.
2017: Medicina
Jonas Donner, Maria Kaukonen, Heidi Anderson, Fredrik Möller, Kaisa Kyöstilä, Satu Sankari, Marjo Hytönen, Urs Giger, Hannes Lohi
BACKGROUND: The growing number of identified genetic disease risk variants across dog breeds challenges the current state-of-the-art of population screening, veterinary molecular diagnostics, and genetic counseling. Multiplex screening of such variants is now technologically feasible, but its practical potential as a supportive tool for canine breeding, disease diagnostics, pet care, and genetics research is still unexplored. RESULTS: To demonstrate the utility of comprehensive genetic panel screening, we tested nearly 7000 dogs representing around 230 breeds for 93 disease-associated variants using a custom-designed genotyping microarray (the MyDogDNA® panel test)...
2016: PloS One
Jury Kim, Young-Jun Kim, Dong-Beom Ji, Min-Su Kim
A slow loris, Nycticebus coucang , was brought to Ji Dong Beom Animal Hospital from the National Institute of Ecology due to globe enlargement and frequent blepharospasm of the right eye. Ophthalmic diagnoses included glaucoma with posterior lens luxation and cataract. Because this animal was on exhibition at the National Institute of Ecology, preservation of the eyeball by intraocular silicone implantation following evisceration rather than enucleation was selected. Before the surgery, examination of the normal left eye was performed using Retcam and spectral domain optical coherence tomography...
June 2016: Journal of Zoo and Wildlife Medicine: Official Publication of the American Association of Zoo Veterinarians
Argyrios Tzamalis, Chrysanthos Symeonidis, Irini P Brazitikou, Dimitra Tzetzi, Nikos Chalvatzis, Sofia Androudi, Periklis Brazitikos
PURPOSE: To describe the safety and efficacy of removing posteriorly dislocated lens fragments with the use of intravitreal ultrasonic fragmentation through a limbal, clear cornea self-sealing incision. METHODS: Patients presenting with posteriorly luxated nuclei were enrolled in this prospective case series. Preoperative examination included evaluation of the corneal endothelium by means of specular microscopy. A 3-port 25+ pars plana vitrectomy was initially performed...
March 2017: Retina
Kristen M O'Connell, Tammy M Michau, Jessica M Stine, Andrea T Reid
OBJECTIVE: To establish reference values and report ophthalmic examination findings in a colony of captive brown pelicans (Pelecanus occidentalis). DESIGN: Descriptive study. ANIMALS STUDIED: Sixty-three captive brown pelicans in Florida were examined. PROCEDURES: A complete ophthalmic examination including Schirmer tear test (STT), applanation tonometry, fluorescein stain, biomicroscopy, and direct and indirect ophthalmoscopy was performed...
May 2017: Veterinary Ophthalmology
Alexander Melamud, James S Topilow, Ling Cai, Xin He
PURPOSE: To compare visual outcomes among eyes that underwent pars plana vitrectomy (PPV) in combination with either anterior chamber intraocular lens implantation (ACIOL) or scleral suturing of posterior chamber lens (PCIOL). DESIGN: Retrospective comparative case series. METHODS: All eyes presented with aphakia or luxated or subluxated posterior chamber intraocular lens (IOL) following complicated cataract surgery, trauma, or spontaneous dislocation...
August 2016: American Journal of Ophthalmology
Diego Ruiz-Casas, Juan Gros-Otero, Alfonso Casado
PURPOSE: To describe a surgical technique for complete and safe dexamethasone intravitreal implant (Ozurdex; Allergan, Inc., Irvine, CA) removal from anterior chamber. METHODS: Description of a new surgical technique for Ozurdex removal using a lens injector cartridge. RESULTS: Dexamethasone implant was removed completely from anterior chamber with no damage to corneal endothelium or posterior chamber luxation in a patient with Ozurdex anterior chamber migration...
2016: Retinal Cases & Brief Reports
Elise Donzel, Léa Arti, Sabine Chahory
OBJECTIVE: To determine the epidemiology and the clinical presentation of cataracts in a population of dogs in France. PROCEDURES: Records of dogs affected by a cataract presented at the Ophthalmology Unit of Alfort Veterinary School during 2009-2012 were reviewed. The etiology was determined for each dog. The signalment of affected dogs, their medical history, age of onset, stage of progression, location of opacities, and ocular lesions associated were evaluated for each etiology...
March 2017: Veterinary Ophthalmology
Seita Morishita, Masanori Fukumoto, Hiroyuki Suzuki, Takaki Sato, Teruyo Kida, Eisuke Isizaki, Mari Ueki, Tetsuya Sugiyama, Tsunehiko Ikeda
BACKGROUND: We encountered a rare patient with lens luxation in which the lens had become stuck on the optic disc. Findings obtained during vitreous surgery suggested that the luxated lens had become stuck on the optic disc via residual vitreous gel. CASE PRESENTATION: An 88-year-old Japanese man experienced lens luxation into the inferior vitreous cavity while undergoing treatment for glaucoma in his left eye. Because no inflammation was present upon examination, we observed the patient without prescribing any additional medications except for the eye drop treatment for glaucoma...
January 22, 2016: Journal of Medical Case Reports
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