VETERINARY OPHTHALMOLOGY

Effects of Oral Macrocyclic Lactone Heartworm Preventatives on Retinal Function and Chromatic Pupillary Light Reflex in Healthy Companion Dogs
Hopper RG, Ludwig AL, Salzman MM, Elazegui E, Rogers CM, Bentley E and Mowat FM
Determine the effect of oral macrocyclic lactone heartworm-preventative medications on retinal function and chromatic pupillary light reflex (cPLR) in healthy dogs.
Retrobulbar Infiltrative Lipoma in a Dog
Presley T, Sasaki E, de Cecco BS, Carter RT, St Blanc A, Rademacher N and Camacho-Luna P
A 6-year-old castrated male mixed breed dog presented to the "Louisiana State University Veterinary Teaching Hospital &-anonymized for review" ophthalmology service with marked exophthalmos and lagophthalmos of the left eye and soft tissue swelling medial to the zygomatic arch. A computed tomography (CT) scan was performed, and it revealed a well-marginated, lobulated, homogenously fat density involving the retrobulbar space. Preliminary results of a fine-needle aspirate (FNA) and biopsy were not conclusive, and a modified transfrontal orbitotomy was performed to remove the mass. Histopathological evaluation was diagnostic for retrobulbar infiltrative lipoma. Nine months after the surgery, the eye appears within normal limits with no evidence of recurrence.
Veterinary ophthalmology-Ocular surgery
da Silva EG
Breaking down barriers: Improving accessibility and inclusivity for people with disabilities in veterinary ophthalmology
O'Leary L
Over 25% of people in the United States are affected by physical disabilities, leading to regular interactions between the disabled community and veterinary ophthalmology. However, various barriers hinder individuals with disabilities from accessing care for their pets, working in veterinary clinics, pursuing training as veterinarians and veterinary ophthalmologists, and continuing their careers as disabilities develop. This article explores strategies for the veterinary ophthalmology community to implement positive changes that enhance access and inclusivity within clinics and the profession at practical, institutional, and cultural levels.
Attempted ablation of an orbital cyst in a dog with 1% polidocanol using fluoroscopy and contrast cystography
Matthews MR, Jones KEV, Flanders H, Wotman K, Cleymaet A and Scansen BA
A 4-year-old female spayed mixed-breed dog received enucleation surgery of the right eye in 2018 following the diagnosis of glaucoma. The patient was presented in 2021 for recurrent swelling of the right orbit. Ultrasound confirmed the presence of a cystic structure, and chemical ablation with 1% polidocanol (compounded, Stokes Pharmacy, Mt. Laurel, NJ) and contrast cystography was elected for treatment. Iodinated contrast was injected under fluoroscopy and after no leakage was noted, the contrast was aspirated from the orbital cyst and immediately followed by an injection of 1% polidocanol solution. The orbital cyst collapsed within 24 h but returned 25 days post-injection. A second attempt was made for chemical cyst wall ablation with 1% polidocanol foam and ultrasound guidance. The orbital cyst returned 12 weeks post 1% polidocanol foam injection, and the patient presented for surgical removal. Histopathology revealed an orbital conjunctival inclusion cyst associated with granulomatous and lymphoplasmacytic inflammation. Histopathology confirmed that the draining cyst was lined by conjunctiva and likely represented conjunctival remnants from the previous enucleation. This report describes fluoroscopic guidance for sclerotherapy in the treatment of a post-enucleation orbital cyst in a dog. Contrast cystography may be useful to verify catheter position and demonstrate cyst margins prior to injection. This case report highlights the importance of complete conjunctival excision during enucleation.
Dexamethasone-Antibiotic Interactions in Canine Ocular Bacteria: In Vitro Susceptibility Changes in Common Corneal Infection Pathogens
Kim D, Park J, Jung JS, Hwang J, Kwon H, Kwon M, Yong J, Yoon H and Park KM
To investigate the impact of dexamethasone on the antibiotic susceptibility of common ocular pathogens in dogs and identify safe antibiotic-steroid combinations for veterinary ophthalmology.
Lateral Tarsorrhaphy and Fixation on the Orbital Ligament to Correct Macroblepharon in Dogs: 77 Palpebral Fissures
Werner-Tutschku M and Nell B
To describe a surgical method for correcting lower lid entropion, lateral canthal entropion, and macroblepharon.
Gender differences in canine anterior chamber dimensions: Potential implications for primary angle-closure glaucoma
Kim D, Kwon H, Hwang J, Jung JS, Kwon M, Yong J, Yoon H, Kim S and Park KM
This study aimed to explore anatomical differences in the aqueous humor (AH) outflow pathway between male and female dogs using ultrasound biomicroscopy (UBM).
Efficacy of 0.2% povidone-iodine and 0.1% polyhexamethylene biguanide as preoperative antiseptics in equine ophthalmic procedures
Farkas A, Thieme K, Soimala T, Jensen CK and Eule JC
This retrospective study evaluates the efficacy of povidone-iodine (PI) and polyhexamethylene biguanide (PHMB) as preoperative antiseptics in equine ophthalmic procedures.
Ocular findings in dogs and cats following chemical injury by the Bronze Orange Bug (Musgraveia sulciventris)
Yates KL, Robertson KC, Crowe YC and Billson FM
To describe the ocular findings in dogs and cats after chemical injury by the Bronze Orange Bug (Musgraveia sulciventris), which is endemic to eastern Australia in Queensland and New South Wales.
Electrochemotherapy with bleomycin for bilateral ocular squamous cell carcinoma in a horse
Larsen MME, Eriksson A and Impellizeri JA
To describe the procedure and outcome of electrochemotherapy (ECT) with bleomycin as a first-line treatment for bilateral ocular surface squamous neoplasia (OSSN) in the eye of a horse.
Clinical manifestations of Florida spot keratopathy in dogs and cats: One hundred cases (2021-2024)
Pe'er O, W Handel K, Arad D, Sebbag L and Ofri R
This study describes the ocular findings in dogs and cats diagnosed with Florida spot keratopathy (FSK) at a single institution.
Diffuse iris melanoma leading to secondary glaucoma in a lion (Panthera leo)-A case report
Correa JC, Moreira MVL, Javorouski ML, Werner J, Shaw G, Schreider B, D'Otaviano de Castro Vilani RG and Montiani-Ferreira F
To describe the case of a 12-year-old male African lion (Panthera leo) presented with ocular discharge, corneal edema, and buphthalmos of the right eye.
Keratoconjunctivitis sicca in intact Aksaray Malakli breed dogs: Evaluation of 50 cases
Avci N, Gumus F, Boztok Ozgermen B and Ozen D
Keratoconjunctivitis sicca (KCS) is characterized by decreased aqueous tear film components, leading to ocular surface damage. Diagnosis involves clinical examination, Schirmer Tear Test (STT1), and Tear Film Break-Up Time (TFBUT) measurement. This retrospective study aimed to assess dry eye syndrome in intact, purebred, Aksaray Malakli breed dogs, and investigate potential associations with hereditary ocular diseases due to inbreeding for phenotype preservation.
Insights from an online survey: Veterinary surgeons' antibiotic practices in ophthalmic surgery in Germany
Busse C, Raab A, Kreienbrock L and Volk HA
To investigate antibiotic usage practices in ophthalmic surgeries in Germany.
Characterization of scleral rupture of canine globes following compression via mechanical testing unit
Goldreich J, Hendrix D, Mulon PY and Ward D
To determine the load at failure of canine intact cadaveric eyes and to describe the anatomic location and length of the rupture following external compression.
Assessment of meibomian gland morphology and tear-film lipid layer using noncontact infrared meibography and meibometry, respectively, and tear-film osmolarity in healthy dogs
Ng ATJ, Moore PA and Boveland SD
To further investigate quantitative and qualitative tear-film dynamics through tear-film osmolarity, meibometry, meibography, and non-invasive tear-film break-up time and to describe a survey of parameters in normal eyes of healthy non-brachycephalic dogs.
Anti-fibrotic effects of lisinopril (ACE inhibitor) and fasudil (ROCK inhibitor) in combination for canine corneal fibrosis in vitro
Routh BL, Tripathi R, Giuliano E, Lujin P, Sinha PR and Mohan RR
Corneal fibrosis is a leading cause of blindness in mammalian species and may result in compromised performance in sports and daily functions. This study evaluated the safety and anti-fibrotic effects of the FDA-approved drugs, angiotensin-converting enzyme inhibitor (ACE-I) lisinopril and rho-kinase inhibitor (ROCK-I) fasudil, alone and in combination, on the canine cornea using an established in vitro model.
Effects of 0.024% latanoprostene bunod on intraocular pressure and pupil diameter in normal cats and cats with congenital glaucoma
Yang VY, Eaton JS, Kiland JA, Koch KE, Oikawa K, Hetzel SJ and McLellan GJ
To evaluate the effects of latanoprostene bunod on intraocular pressure (IOP) and pupil diameter (PD) in normal cats and cats with feline congenital glaucoma (FCG).
Retrospective study on Encephalitozoon cuniculi infections in 118 cat and 9 dog eyes
Hofmann-Wellenhof S and Nell B
This study aims to inform about the clinical image, diagnostic possibilities, and treatment options for cats and dogs diagnosed with ocular encephalitozoonosis.
Preliminary clinical evaluation of the treatment efficacy of a temperature-adjustable cryotherapy device for chronic, recurrent blepharitis in dogs
Kim HW, Yoon TW and Kim JY
To preliminarily evaluate the treatment efficacy of a temperature-adjustable cryotherapy device for chronic, recurrent blepharitis in dogs.