Veterinary ophthalmology最新文献

{"title":"The argument for two-handed cataract surgery in veterinary ophthalmology.","authors":"Kimberly Hsu, Enry Garcia da Silva","doi":"10.1111/vop.13244","DOIUrl":"10.1111/vop.13244","url":null,"abstract":"<p><p>Despite access to contemporary phacoemulsification technology and the strong shift to two-handed nucleofractis techniques in human medicine, a one-handed, single incision approach has persisted among Diplomates of the American College of Veterinary Ophthalmologists. The perpetuation of techniques such as bowl-sculpting one-handed phacoemulsification in veterinary medicine is multifactorial; it is likely associated with the lack of two-handed training in residency programs, the challenges of learning on complex cases, the ease of teaching one-handed versus two-handed techniques to a resident, and the lack of specific instrumentation available designed for larger lens size, among other factors. Additionally, variation in globe and palpebral fissure size in veterinary patients complicates the training of cataract surgery. Finally, many mentors or mentors' mentors, were trained alongside previous generations of MD surgeons who performed bowl sculpting techniques during the transition from extracapsular cataract extraction to phacoemulsification, and understandably, are not comfortable teaching a two-handed technique consistently. The authors have observed an unwillingness to convert from one-handed to two-handed technique in the post-residency career for most veterinary ophthalmologists; this could be due to the high expectations becoming a specialist, especially when the stakes are as high as in phacoemulsification. Therefore, the authors advocate for hands-on training in multiple nucleofractis techniques, including two-handed methods during residency training. Simply put, if residents are not trained and comfortable with two-handed techniques by the end of residency, they are less likely to make further changes later in their career. In this article, we aim to explore the proposed rates of one-handed versus two-handed mentors currently teaching veterinary phacoemulsification, the history of cataract surgery, and to discuss the benefits of two-handed nucleofractis techniques. The authors will also illustrate and provide videos as well as some tools for veterinary ophthalmologists wishing to learn two-handed techniques.</p>","PeriodicalId":23836,"journal":{"name":"Veterinary ophthalmology","volume":" ","pages":"553-569"},"PeriodicalIF":1.7,"publicationDate":"2025-03-01","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"141731479","PeriodicalName":null,"FirstCategoryId":null,"ListUrlMain":null,"RegionNum":4,"RegionCategory":"农林科学","ArticlePicture":[],"TitleCN":null,"AbstractTextCN":null,"PMCID":"","EPubDate":null,"PubModel":null,"JCR":null,"JCRName":null,"Score":null,"Total":0}

{"title":"Sequential Ahmed valve implantation after primary implant surgery in two dogs.","authors":"Songhui Lee, Hyun-Ah Kim, Kangmoon Seo, Seonmi Kang","doi":"10.1111/vop.13158","DOIUrl":"10.1111/vop.13158","url":null,"abstract":"<p><strong>Objective: </strong>To report the outcomes of sequential Ahmed valve implantation in two dogs with uncontrolled intraocular pressure (IOP) after primary Ahmed valve implantation.</p><p><strong>Animals studied: </strong>A 6-year-old castrated male American Cocker Spaniel (case 1) and a 12-year-old spayed female mixed-breed dog (case 2) presented with glaucoma management in the left eyes of both dogs.</p><p><strong>Procedures: </strong>Primary Ahmed valve implantation was performed because of uncontrolled IOP despite antiglaucoma medications used in both dogs. The IOP was maintained within the normal range for 14 and 2 months after surgery in cases 1 and 2, respectively. In both cases, the IOP gradually increased, which was assumed to be caused by bleb fibrosis. In particular, in case 2, one bleb revision surgery was performed during that period, but it was unsuccessful. Therefore, we decided to perform sequential implantation surgery.</p><p><strong>Results: </strong>In case 1, hyphema occurred the day after sequential surgery and resolved with anti-inflammatory treatment. In case 2, it occurred immediately after the surgery and resolved after surgical blood clot removal. IOP remained below 15 mmHg, and menace response was positive until 40 and 23 months after the sequential surgery in cases 1 and 2, respectively. As a long-term complication, cataracts occurred at 17 months in case 1 and 10 months in case 2.</p><p><strong>Conclusions and clinical relevance: </strong>Sequential implantation surgery in the same eye could be an effective alternative for long-term IOP management and vision maintenance. A better understanding of complications and appropriate postoperative management is essential for better outcomes.</p>","PeriodicalId":23836,"journal":{"name":"Veterinary ophthalmology","volume":" ","pages":"486-491"},"PeriodicalIF":1.7,"publicationDate":"2025-03-01","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"138177427","PeriodicalName":null,"FirstCategoryId":null,"ListUrlMain":null,"RegionNum":4,"RegionCategory":"农林科学","ArticlePicture":[],"TitleCN":null,"AbstractTextCN":null,"PMCID":"","EPubDate":null,"PubModel":null,"JCR":null,"JCRName":null,"Score":null,"Total":0}

{"title":"Veterinary ophthalmology-Ocular surgery.","authors":"Enry Garcia da Silva","doi":"10.1111/vop.13314","DOIUrl":"10.1111/vop.13314","url":null,"abstract":"","PeriodicalId":23836,"journal":{"name":"Veterinary ophthalmology","volume":" ","pages":"99"},"PeriodicalIF":1.7,"publicationDate":"2025-03-01","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"142928116","PeriodicalName":null,"FirstCategoryId":null,"ListUrlMain":null,"RegionNum":4,"RegionCategory":"农林科学","ArticlePicture":[],"TitleCN":null,"AbstractTextCN":null,"PMCID":"","EPubDate":null,"PubModel":null,"JCR":null,"JCRName":null,"Score":null,"Total":0}

{"title":"MicroPulse™ transscleral cyclophotocoagulation in the equine patient: A case series of four horses.","authors":"A M Sturbaum, K J Kaiser, J S Riesberg","doi":"10.1111/vop.13184","DOIUrl":"10.1111/vop.13184","url":null,"abstract":"<p><strong>Objective: </strong>To describe the clinical application and outcome of MicroPulse™ transscleral cyclophotocoagulation (MP-TSCPC) treatment in horses with glaucoma.</p><p><strong>Animals studied: </strong>Four client-owned horses with primary (n = 2) or secondary (n = 2) glaucoma.</p><p><strong>Methods: </strong>Horses were treated with MP-TSCPC under standing sedation with a minimum of 30 days of follow-up (range 30-1241 days). Affected eyes were treated with a 31.3% duty cycle and 3000 mW laser power for a total of 180 s. Data collected included signalment, pre- and post-procedure intraocular pressures (IOPs), laser settings, medications, complications, and repeat therapy.</p><p><strong>Results: </strong>Four horses (5 eyes) received at least one treatment with MP-TSCPC. Mean preoperative IOP was 44 mmHg (range 33-49 mmHg). The immediate mean postoperative IOP was 34 mmHg (4 eyes; range 19-55 mmHg). At 1 week, IOP was 38 mmHg (5 eyes; range 21-80 mmHg), at 2 weeks was 40 mmHg (3 eyes, range 17-80 mmHg), at 1 month was 35 mmHg (5 eyes; range 20-50 mmHg), at 3 months was 18 mmHg (2 eyes; range 14-21 mmHg), at 6 months was 35 mmHg (2 eyes; range 30-39 mmHg), and at >300 days was 24 mmHg (3 eyes; range 18-29 mmHg). Complications included corneal ulceration (n = 1 eye), uncontrolled IOP (n = 3 eyes), and need for repeat treatment (n = 2 eyes).</p><p><strong>Conclusions: </strong>MP-TSCPC used with the above-described settings was unsuccessful in treating the majority of cases. Future studies should be targeted at primary glaucoma cases and with use of alternative laser settings.</p>","PeriodicalId":23836,"journal":{"name":"Veterinary ophthalmology","volume":" ","pages":"465-473"},"PeriodicalIF":1.7,"publicationDate":"2025-03-01","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"139472692","PeriodicalName":null,"FirstCategoryId":null,"ListUrlMain":null,"RegionNum":4,"RegionCategory":"农林科学","ArticlePicture":[],"TitleCN":null,"AbstractTextCN":null,"PMCID":"","EPubDate":null,"PubModel":null,"JCR":null,"JCRName":null,"Score":null,"Total":0}

{"title":"The clinical outcomes of 33 canine eyes following the novel sulcus fixation technique of an injectable acrylic lens through a 3-mm corneal incision.","authors":"Jaesang Ahn","doi":"10.1111/vop.13073","DOIUrl":"10.1111/vop.13073","url":null,"abstract":"<p><strong>Purpose: </strong>This retrospective study introduces and evaluates transscleral fixation using a horizontal mattress suture of a conventional injectable acrylic intraocular lens (IOL) inserted through a 3-mm corneal incision in dogs.</p><p><strong>Materials and methods: </strong>This technique was applied to four groups: lens subluxation (group SL, n = 15), anterior or posterior lens luxation (group APLL, n = 9), lens capsule tear or rupture (group LCTR, n = 7), and dislocation of the lens capsule containing an IOL (group IOLD, n = 4).</p><p><strong>Results: </strong>Patients were followed up for an average of 366.7 days (range: 94-830 days) after the surgery. Each IOL was well-centered and the overall visual success rate was 74.3% (26/35). Retinal detachment (4/35) was the most common cause of blindness, followed by glaucoma (3/35), hyphema of unknown etiology (1/35), and severe uveitis accompanied by deep corneal ulcer (1/35).</p><p><strong>Conclusion: </strong>This technique enables sulcus fixation of an IOL, inserted through a 3-mm corneal incision, which is less traumatic than conventional techniques, without the need for specifically designed IOL for sulcus fixation. In this series, this technique enabled to contribute to restore emmetropic vision in dogs.</p>","PeriodicalId":23836,"journal":{"name":"Veterinary ophthalmology","volume":" ","pages":"100-113"},"PeriodicalIF":1.7,"publicationDate":"2025-03-01","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"9083150","PeriodicalName":null,"FirstCategoryId":null,"ListUrlMain":null,"RegionNum":4,"RegionCategory":"农林科学","ArticlePicture":[],"TitleCN":null,"AbstractTextCN":null,"PMCID":"","EPubDate":null,"PubModel":null,"JCR":null,"JCRName":null,"Score":null,"Total":0}

{"title":"A combination of modified Kuhnt-Szymanowski and Celsus-Hotz techniques for correction of entropion and overlong lower eyelids in dogs (40 eyes).","authors":"Hanna Walter, Teresa Bilotta, Catarina Goncalves, Claudia Busse","doi":"10.1111/vop.13084","DOIUrl":"10.1111/vop.13084","url":null,"abstract":"<p><strong>Purpose: </strong>To describe a surgical approach to correct entropion and overlong lower eyelids in dogs by combining the Celsus-Hotz with the modified Kuhnt-Szymanowski technique.</p><p><strong>Methods: </strong>Medical records of patients undergoing the described surgical procedure were reviewed. A semilunar-shaped piece of lower eyelid was excised and combined with an angled incision at the most lateral aspect of the wound. Adjacent to this incision a skin flap was mobilized to expose the subcutaneous tissue in the ventral aspects. A four-sided wedge resection was used to shorten the lid margin in variable positions. Following closure of the eyelid margin wedge resection, a wedge of equal width was removed from the lateral skin flap. Skin and subcutaneous tissues were closed in a routine fashion.</p><p><strong>Results: </strong>All surgeries were performed by an ECVO diplomate or resident. The surgery was performed unilaterally in four and bilaterally in 18 dogs. Most common breeds were English Bulldog (n = 7), Saint Bernard (3), Rottweiler (2) and Cane Corso Italiano (2). Median age was 22 months (range 5-100 months). Median follow-up was 30 days (range 9-987 days). A single surgical procedure was sufficient to correct the entropion in 97.5% (39/40) of eyes.</p><p><strong>Conclusion: </strong>The combination technique described is a suitable surgical procedure to simultaneously correct lower lid entropion and excessive eyelid length, with the added benefits of a stepped wound closure and a flexible lid margin wedge positioning.</p>","PeriodicalId":23836,"journal":{"name":"Veterinary ophthalmology","volume":" ","pages":"114-123"},"PeriodicalIF":1.7,"publicationDate":"2025-03-01","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"https://www.ncbi.nlm.nih.gov/pmc/articles/PMC11911971/pdf/","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"9169812","PeriodicalName":null,"FirstCategoryId":null,"ListUrlMain":null,"RegionNum":4,"RegionCategory":"农林科学","ArticlePicture":[],"TitleCN":null,"AbstractTextCN":null,"PMCID":"OA","EPubDate":null,"PubModel":null,"JCR":null,"JCRName":null,"Score":null,"Total":0}

{"title":"Partial incision blunt scissors lamellar keratectomy under topical anesthesia for the treatment of presumed calcific corneal degeneration in dogs.","authors":"Rachel C Rowen, Elizabeth M Curto, Ann T Gratzek","doi":"10.1111/vop.13248","DOIUrl":"10.1111/vop.13248","url":null,"abstract":"<p><strong>Objective: </strong>The aim of the study was to investigate clinical features of lamellar keratectomy for presumed calcific corneal degeneration in a population of geriatric dogs using blunt scissors dissection under topical anesthesia.</p><p><strong>Animals studied and procedures: </strong>Retrospective analysis of dogs with clinically diagnosed calcific degeneration treated by keratectomy under topical anesthesia between 2015 and 2021 at two veterinary ophthalmology practices was performed. Descriptive data regarding signalment, concurrent systemic and ocular disease, complications, healing time, and recurrence were collected. Kaplan-Meier survival analysis was performed to calculate 1-year recurrence probability.</p><p><strong>Results: </strong>Sixty-five eyes in 57 dogs met inclusion criteria. All 54 eyes with follow-up healed within a median of 14 days (7-74), including 17 with complicating factors of infection or deep stromal ulceration. Globe rupture occurred intraoperatively in three eyes (4.6%), for which subsequent conjunctival graft was performed. Calculated 1-year recurrence probability from 47 eyes followed long term was 25%. Multivariate Cox proportional hazard modeling showed a significant association between documented systemic disease and time to recurrence (p = .035), irrespective of topical EDTA use (p = .432). Median follow-up time available for all cases was 249 days.</p><p><strong>Conclusions: </strong>Blunt lamellar dissection with corneal scissors can be performed in dogs under topical anesthesia, yielding healing times and recurrence comparable to previously reported treatments for calcific corneal degeneration. Globe rupture is an inherent risk of both the disease and procedure and occurred in 4.6% of treated eyes. This approach expands non-anesthetic treatment options for affected patients but should only be performed with advanced microsurgical training and client counseling on individual risk and benefit.</p>","PeriodicalId":23836,"journal":{"name":"Veterinary ophthalmology","volume":" ","pages":"353-363"},"PeriodicalIF":1.7,"publicationDate":"2025-03-01","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"141459629","PeriodicalName":null,"FirstCategoryId":null,"ListUrlMain":null,"RegionNum":4,"RegionCategory":"农林科学","ArticlePicture":[],"TitleCN":null,"AbstractTextCN":null,"PMCID":"","EPubDate":null,"PubModel":null,"JCR":null,"JCRName":null,"Score":null,"Total":0}

{"title":"Micropulse transscleral cyclophotocoagulation in canine glaucoma: A retrospective study evaluating sweep velocity.","authors":"Valeria Benitez-Vera, Dineli Bras, Fabiano Montiani-Ferreira","doi":"10.1111/vop.13208","DOIUrl":"10.1111/vop.13208","url":null,"abstract":"<p><strong>Objective: </strong>To report preliminary results of MP-TSCP in canine patients with glaucoma while evaluating sweep velocity, treatment efficacy, and safety utilizing standardized surgical parameters.</p><p><strong>Animal studied: </strong>Client-owned dogs that underwent MP-TSCP at a veterinary referral hospital.</p><p><strong>Procedure: </strong>Medical records of 19 eyes (14 dogs) treated with MP-TSCP were reviewed. Eleven eyes were treated with a 10 s/sweep (s) velocity and 8 eyes with a 20 s/s. Laser duty cycle was set at 31.3%, mean laser energy was 2766 mW, and mean duration was 120 s per hemisphere. Minimum post-operative follow-up was 6 months. Outcomes of intraocular pressure (IOP), vision status, degree of antiglaucoma medications, and complications were evaluated.</p><p><strong>Results: </strong>There was a significantly lower median (IQR) IOP (<25 mmHg) at each timepoint postoperatively compared to IOP pre-operatively (p < 0.05). The overall success rate for IOP control at 6 months was 84%, 100% for the 10 s/s and 62.5% for the 20 s/s. Vision was preserved in 10/11 (90%) eyes from the 10 s/s group and 4/8 (50%) eyes from the 20 s/s group at 6 months. Average number of glaucoma medications in the 10 s/s group decreased from 4.4 to 1.5 and from 3.3 to 2.5 in the 20 s/s group. Post-operative complications were mild and resolved within 1 week.</p><p><strong>Conclusions: </strong>MP-TSCP is a non-invasive treatment alternative for canine glaucoma. Employing higher energy levels rendered long-term IOP control while retaining a high safety profile with minimal postoperative complications. There was no statistical difference between a 10 s/s and 20 s/s surgical velocity, both leading to successful surgical outcomes up to 6 months post-operatively.</p>","PeriodicalId":23836,"journal":{"name":"Veterinary ophthalmology","volume":" ","pages":"293-305"},"PeriodicalIF":1.7,"publicationDate":"2025-03-01","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"https://www.ncbi.nlm.nih.gov/pmc/articles/PMC11911986/pdf/","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"140050446","PeriodicalName":null,"FirstCategoryId":null,"ListUrlMain":null,"RegionNum":4,"RegionCategory":"农林科学","ArticlePicture":[],"TitleCN":null,"AbstractTextCN":null,"PMCID":"OA","EPubDate":null,"PubModel":null,"JCR":null,"JCRName":null,"Score":null,"Total":0}

{"title":"Vision outcomes in dogs with primary glaucoma surgically treated with lensectomy and endolaser cyclophotocoagulation after an Ahmed valve gonioimplantation failure.","authors":"Bactelius Turicea, Christian L Munevar, Sydney G Edwards, Lana L Linton","doi":"10.1111/vop.13172","DOIUrl":"10.1111/vop.13172","url":null,"abstract":"<p><strong>Objective: </strong>The aim of this study was to retrospectively evaluate vision outcomes of dogs with primary angle closure glaucoma (PACG) that underwent Ahmed valve gonioimplantation (AVG) followed by lensectomy and endolaser cyclophotocoagulation (ECP) with or without bleb resection after AVG failure.</p><p><strong>Procedure: </strong>Medical records from 2008 to April 2022 were reviewed. All patients selected had an AVG performed first. Following valve failure, lensectomy-ECP was performed in addition to bleb resection as indicated. Additional ECP and AVG replacement surgeries were performed as deemed medically necessary. Main outcomes evaluated included vision preservation, average IOP reduction, and the number of glaucoma medications (both oral and topical) at 6, 12, 24, and 36 months.</p><p><strong>Results: </strong>Fourteen eyes from 13 patients were included in the study. Females were predominant (n = 9) compared with males (n = 4). Mean age at initial glaucoma diagnosis was 6.82 years. Following AVG and lensectomy-ECP, vision was preserved in 93%, 84%, 60%, and 48% of eyes at 1, 2, 3, and 4 years respectively. Following lensectomy-ECP, there was a significant reduction in mean IOP of 9.64 mmHg (p = .015) and 9.71 mmHg (p = .016) at 2 and 6 months, respectively. There was a reduction in mean IOP of 2.45, 7.25, and 12.25 mmHg at 12, 24, and 36 months, respectively, which was not statistically significant. There was a significant decrease in the number of glaucoma medications at all evaluated time points except 24 months.</p><p><strong>Conclusions: </strong>Combined AVG and lensectomy-ECP is successful in maintaining vision long term as well as decreasing IOP, and the number of glaucoma medications administered.</p>","PeriodicalId":23836,"journal":{"name":"Veterinary ophthalmology","volume":" ","pages":"207-217"},"PeriodicalIF":1.7,"publicationDate":"2025-03-01","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"https://www.ncbi.nlm.nih.gov/pmc/articles/PMC11911994/pdf/","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"138499569","PeriodicalName":null,"FirstCategoryId":null,"ListUrlMain":null,"RegionNum":4,"RegionCategory":"农林科学","ArticlePicture":[],"TitleCN":null,"AbstractTextCN":null,"PMCID":"OA","EPubDate":null,"PubModel":null,"JCR":null,"JCRName":null,"Score":null,"Total":0}

{"title":"Relationship Between Optic Nerve Head Area and Peripapillary Retinal Nerve Fiber Layer Thickness in Laboratory Beagles.","authors":"Colleen E Dwyer, Christine D Harman, Mylee R Haught, Frank R Lawrence, Amanda L Jacobson, Kristin L Koehl, András M Komáromy","doi":"10.1111/vop.70008","DOIUrl":"https://doi.org/10.1111/vop.70008","url":null,"abstract":"<p><strong>Objective: </strong>To determine if the area of the canine optic nerve head (ONH) is related to the peripapillary retinal nerve fiber layer (RNFL) thickness.</p><p><strong>Animals studied: </strong>A total of 44 eyes of 22 adult normal laboratory Beagles.</p><p><strong>Procedures: </strong>In this retrospective study, confocal scanning laser ophthalmoscopy (cSLO) and spectral domain optical coherence tomography (SD-OCT) images were evaluated. The sum of eight RNFL thickness measurements along the 12° circular OCT b-scan around the ONH was used to represent the total number of retinal ganglion cell (RGC) axons. The area of the ONH was measured by tracing the outer edges of the ONH in the cSLO images and adjusted for axial globe length. Descriptive and Pearson correlation statistics were used to describe the distribution of the ONH sizes and the relationship between total RNFL thickness and ONH area.</p><p><strong>Results: </strong>The ONH area distribution for all eyes combined was approximately symmetric with an overall mean (± standard deviation) of 129 ± 35 degrees². The ONH areas between right and left eyes showed a strong, significant linear correlation (r = 0.83, p = 0.00). The mean sum of the eight RNFL thicknesses measured along the 12° circular OCT b-scan around the ONH was 448 ± 50 μm. There was a moderate, significant positive linear correlation between peripapillary RNFL thickness and ONH area (r = 0.43, p = 0.004).</p><p><strong>Conclusions: </strong>In laboratory Beagles, the ONH area is partly affected by the peripapillary RNFL thickness, representing the total RGC axon number forming the optic nerve.</p>","PeriodicalId":23836,"journal":{"name":"Veterinary ophthalmology","volume":" ","pages":""},"PeriodicalIF":1.7,"publicationDate":"2025-02-24","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"143493930","PeriodicalName":null,"FirstCategoryId":null,"ListUrlMain":null,"RegionNum":4,"RegionCategory":"农林科学","ArticlePicture":[],"TitleCN":null,"AbstractTextCN":null,"PMCID":"","EPubDate":null,"PubModel":null,"JCR":null,"JCRName":null,"Score":null,"Total":0}