RESUMO
PURPOSE: To describe a novel, minimally invasive surgical technique to treat severe, intractable periorbital neuropathic pain. METHODS: A retrospective analysis of patients with severe, treatment-refractory periorbital pain who underwent transection of affected sensory trigeminal branches with nerve repair was performed. Collected data included etiology and duration of neuropathic pain, comorbidities, prior treatment history, surgical technique including site of transected sensory nerves and type of nerve repair, preoperative and postoperative pain scores as well as follow-up duration. Differences between preoperative and postoperative values were analyzed by the Wilcoxon signed-rank test. RESULTS: A total of 5 patients with severe periorbital neuropathic pain underwent transection of affected supraorbital, supratrochlear, infratrochlear, infraorbital, zygomaticotemporal, and zygomaticofacial nerves with customized nerve reconstruction. All 5 had improvement of periorbital pain after surgery, with 3 (60%) noting complete resolution of pain and 2 (40%) experiencing partial pain relief over a median follow-up period of 9 months (interquartile range [IQR], 6-19 months). Of the 3 patients who had complete resolution of pain, all reported continued pain relief. Median McGill pain scores significantly decreased from 8.4 (IQR, 8.2-10.0) preoperatively to 0.0 (IQR, 0.0-4.8; p < 0.001) postoperatively. All patients reported satisfaction with the surgical procedure and stated that they would undergo the procedure again if given the option. One patient with history of postherpetic neuralgia (PHN) had reactivation of herpes zoster at postoperative month 3, which was self-limited, without worsening of her neuropathic pain. Another patient with PHN required a staged procedure to achieve complete pain relief. CONCLUSION: Peripheral neurectomy with customized reconstruction of involved sensory nerves can successfully reduce and even eradicate periorbital neuropathic pain that was previously recalcitrant to combination pharmacotherapy and prior neurolysis procedures.
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Neuralgia Pós-Herpética , Neuralgia , Humanos , Feminino , Estudos Retrospectivos , Neuralgia/diagnóstico , Neuralgia/etiologia , Neuralgia/cirurgia , Neuralgia Pós-Herpética/complicações , Neuralgia Pós-Herpética/cirurgia , Dor Facial , Denervação/efeitos adversosRESUMO
PURPOSE: The aim of this study was to assess clinical outcomes of corneal neurotization (CN) and determine patient perception of postoperative results. METHODS: This was a retrospective study involving 29 eyes in 28 patients who underwent CN. Chart review data included demographic and clinical history; ophthalmic examination including visual acuity, ocular surface quality, and corneal sensation; surgical technique; and postoperative course. Subjective self-reported patient outcomes of surgical success were also assessed. Only eyes with at least 6 months of follow-up were included in the statistical analysis. RESULTS: A total of 24 eyes and 23 patients were included in statistical analyses. The median postoperative follow-up time was 12.2 months (interquartile range 10.9-18.5 mo). Twenty-three eyes (92%) achieved improvement in ocular surface quality. Eleven of 13 (85%) demonstrated healing of persistent epithelial defects at their last follow-up. Patients gained a median of 2.3 cm in Cochet-Bonnet esthesiometry measurements of sensation. No significant difference was found between preoperative and postoperative visual acuity. All 17 patients who provided self-assessment of their surgical outcome indicated they would undergo CN again if given the choice. Most of the patients reported that the postoperative pain was tolerable, with a median pain score of 3.0 on a 10-point scale (interquartile range 0.0-4.0). Sixteen patients (94%) reported full or partial return of skin sensation along the donor nerve distribution. CONCLUSIONS: CN provides improvement in corneal health and sensibility, with high patient satisfaction and minimal postoperative pain and morbidity.
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Córnea/inervação , Doenças da Córnea/cirurgia , Regeneração Nervosa/fisiologia , Transferência de Nervo/métodos , Satisfação do Paciente , Sensação/fisiologia , Acuidade Visual , Adolescente , Adulto , Idoso , Idoso de 80 Anos ou mais , Criança , Pré-Escolar , Córnea/cirurgia , Doenças da Córnea/fisiopatologia , Feminino , Humanos , Masculino , Pessoa de Meia-Idade , Estudos Retrospectivos , Adulto JovemRESUMO
Neurotrophic keratopathy is a degenerative disease in which damage to the corneal nerves leads to corneal hypoesthesia. Injuries to neurotrophic corneas are notoriously difficult to treat and have traditionally been approached with supportive management. However, recent progress in the field of corneal neurotization has given new direction for addressing nerve loss directly by stimulating new nerve growth onto the cornea from nearby sensory nerves transferred to the perilimbal region. Herein, we review the surgical techniques utilized in corneal neurotization, including direct transfers and the use of nerve grafts. Considerations in surgical approach, as well as factors that influence prognosis and outcomes of the surgical intervention are also discussed.
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Doenças da Córnea , Distrofias Hereditárias da Córnea , Transferência de Nervo , Doenças do Nervo Trigêmeo , Córnea , Doenças da Córnea/cirurgia , Humanos , Regeneração Nervosa , Doenças do Nervo Trigêmeo/cirurgiaRESUMO
PURPOSE: To assess early outcomes of corneal neurotization for postherpetic neurotrophic keratopathy (NK). METHODS: Retrospective analysis of patients who underwent corneal neurotization for postherpetic NK by a single experienced oculoplastic surgeon was performed. Collected data included stage and etiology of NK as well as comorbidities, prior treatment history, neurotization technique, donor nerve site, preoperative and postoperative examination findings (i.e., ocular surface quality, corneal clarity, corneal sensation by Cochet-Bonnet esthesiometry, and visual acuity [VA]), and follow-up duration. Differences between preoperative and postoperative values were analyzed by Wilcoxon signed-rank test. RESULTS: Of 23 adult patients who underwent corneal neurotization, 3 (13%) had history of herpes simplex keratitis and/or endotheliitis, and 4 (17%) had history of herpes zoster ophthalmicus. One patient with herpes zoster ophthalmicus was excluded due to inadequate follow-up duration. Of the 6 patients included in the study, 3 (50%) had Mackie stage 1 disease, 1 (17%) had stage 2, and 2 (33%) had stage 3 with impending perforation, but all had markedly diminished corneal sensation, with a median denervation time of 11.8 months (interquartile range [IQR] 9.4-29.2 months). Following neurotization, median corneal sensation improved significantly from 1.6 cm (interquartile range 0.0-1.9 cm) to 3.6 cm (IQR 3.0-5.6 cm, p = 0.028), with 1 patient achieving full sensation by postoperative month 5. All patients with a persistent epithelial defect preoperatively showed complete corneal healing by their last follow-up visit. VA also improved postoperatively in all patients (p = 0.028). Median follow-up duration was 11.3 months (interquartile range 9.6-17.9 months). CONCLUSIONS: Corneal neurotization can successfully reinnervate corneas previously devitalized by herpetic disease and halt the progressive nature of postherpetic NK. If utilized appropriately and early in the disease process, neurotization may reduce morbidity and maximize visual potential in postherpetic NK.
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Doenças da Córnea , Transferência de Nervo , Doenças do Nervo Trigêmeo , Adulto , Córnea/cirurgia , Doenças da Córnea/cirurgia , Humanos , Estudos Retrospectivos , Doenças do Nervo Trigêmeo/cirurgiaRESUMO
OBJECTIVE: To evaluate for relative palpebral and orbital changes after long-term unilateral exposure to prostaglandin analogues (PGAs) in patients with childhood glaucoma. DESIGN: Prospective cross-sectional cohort study. PARTICIPANTS: A total of 29 patients with history of childhood glaucoma, who were treated unilaterally with PGAs for at least 12 months. METHODS: Based on 4 standardized clinical photographs (en face with eyes open, right and left side views with eyes open, and en face with eyes closed), 3 masked expert graders each independently selected the eye they perceived to have received unilateral PGA treatment by physical appearance alone and graded the following features relative to the other eye: (1) ocular (e.g., conjunctival hyperemia, iris heterochromia, and buphthalmos), (2) palpebral (e.g., eyelash trichomegaly, eyelash hypertrichosis, eyelid erythema, eyelid edema, eyelid hyperpigmentation, high upper eyelid crease, upper eyelid ptosis, upper and/or lower eyelid retraction, and eyelid skin atrophy with presence of telangiectasias), and (3) periorbital (e.g., superior sulcus hollowing, proptosis, enophthalmos, hypoglobus, and hyperglobus). An interrater reliability analysis was performed using the Fleiss kappa (κ) statistic to determine consistency among raters. MAIN OUTCOME MEASURES: Frequencies of each feature of prostaglandin-associated periorbitopathy (PAP); group consensus; interrater reliability of selected PGA-treatment laterality. RESULTS: Median unilateral PGA exposure time was 31.7 months (interquartile range: 18.8-44.3 months). Eyelash trichomegaly and hypertrichosis (n = 22, 76%), high upper eyelid crease (n = 20, 69%), upper eyelid ptosis (n = 14, 52%), and superior sulcus hollowing (n = 15, 52%) were the most frequently observed features of PAP in PGA-treated eyes compared with untreated fellow eyes. Most of these changes were mild, but 20% to 30% of patients exhibited moderate eyelash and/or eyelid changes. One patient had severe PAP after long-term unilateral PGA exposure. Group consensus with correctly selected laterality was achieved in all patients. The inter-rater reliability was excellent (κ = 0.815, P < 0.001, 95% confidence interval [0.605, 1.000]). CONCLUSIONS: Mild-to-moderate changes in the ocular adnexa can develop in children and young adults with long-term PGA exposure. Patients and their families should be educated on the possibility of PAP, especially when initiating monocular PGA therapy.
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Pestanas/efeitos dos fármacos , Doenças Palpebrais/induzido quimicamente , Glaucoma/tratamento farmacológico , Pressão Intraocular/fisiologia , Prostaglandinas Sintéticas/efeitos adversos , Adolescente , Criança , Estudos Transversais , Pestanas/diagnóstico por imagem , Doenças Palpebrais/diagnóstico , Feminino , Glaucoma/fisiopatologia , Humanos , Pressão Intraocular/efeitos dos fármacos , Masculino , Estudos ProspectivosRESUMO
PURPOSE: To describe clinical outcomes of a minimally invasive technique for direct corneal neurotization to treat neurotrophic keratopathy. METHODS: All cases of corneal neurotization for neurotrophic keratopathy performed by a single surgeon using minimally invasive direct corneal neurotization were reviewed. The supraorbital donor nerve was directly transferred to the cornea through an upper eyelid crease incision using either a combination of endoscopic and direct visualization or direct visualization alone. Detailed ocular and adnexal examinations as well as Cochet-Bonnet esthesiometry of the affected cornea were performed. Corneal histopathology and in vivo confocal microscopy after minimally invasive direct corneal neurotization were reviewed in one patient who underwent simultaneous penetrating keratoplasty. RESULTS: Five consecutive cases in 4 patients were included, with a mean follow up of 15.8 months (range: 11-23 months). Average denervation time was 17.8 months (range: 6-24 months). Baseline corneal conditions were Mackie stage 1 (20%), Mackie stage 2 (40%), and Mackie stage 3 (40%). All patients demonstrated improvements in corneal sensibility and appearance postoperatively. All patients demonstrated stable or improved visual acuity. No patients developed persistent epithelial defects postoperatively, and all achieved return of tactile skin sensation in the donor nerve sensory distribution. In vivo confocal microscopy after minimally invasive direct corneal neurotization and simultaneous penetrating keratoplasty demonstrated regeneration of corneal nerves. Complications included an asymptomatic small bony excrescence lateral to the supraorbital notch in one patient and cataract progression in the patient who underwent penetrating keratoplasty. CONCLUSIONS: Minimally invasive direct corneal neurotization is a safe and effective treatment of neurotrophic keratopathy.
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Doenças da Córnea , Transferência de Nervo , Córnea/cirurgia , Doenças da Córnea/cirurgia , Humanos , Regeneração Nervosa , Nervo OftálmicoAssuntos
Arteriopatias Oclusivas/induzido quimicamente , Glucocorticoides/efeitos adversos , Aparelho Lacrimal/efeitos dos fármacos , Artéria Oftálmica/efeitos dos fármacos , Oclusão da Artéria Retiniana/induzido quimicamente , Triancinolona Acetonida/efeitos adversos , Idoso , Arteriopatias Oclusivas/diagnóstico , Feminino , Angiofluoresceinografia , Humanos , Artéria Oftálmica/patologia , Oclusão da Artéria Retiniana/diagnóstico , Acuidade VisualRESUMO
PURPOSE: To assess the safety, efficacy, and patient satisfaction of a newly described technique for the treatment of mild to moderate lash ptosis performed as augmentation to upper eyelid blepharoplasty. METHODS: Patient medical records for 27 consecutive cases of upper eyelid blepharoplasty between January 2016 and June 2017 and 19 consecutive cases of upper eyelid blepharoplasty with the laser lash tilt procedure between July 2016 and January 2017 performed by the senior author were retrospectively reviewed. Lash position in preoperative and postoperative photographs was graded in a randomized masked fashion on a 4-point scale by 5 oculoplastic surgeons. RESULTS: There was a significant improvement in mean lash position scores for the control group (0.52 ± 0.34, p < 0.001) with mean lash score improving from 1.14 ± 0.46 before surgery to 0.62 ± 0.46 after blepharoplasty alone. There was also significant improvement in mean lash position scores for the laser lash group (0.98 ± 0.52, p < 0.01) with mean lash score improving from 1.66 ± 0.62 before surgery to 0.68 ± 0.50 after blepharoplasty with laser lash treatment. The improvement in lash position seen in the laser lash group was significantly greater than the improvement seen in the control group (p = 0.001). There were no complications and all patients were satisfied with their results. CONCLUSIONS: Compared with upper eyelid blepharoplasty alone, the addition of the CO2 laser lash tilt technique provides a significant improvement in the upward tilt of the eyelashes as they emerge from the eyelid margin.
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Blefaroplastia/métodos , Blefaroptose/cirurgia , Pálpebras/cirurgia , Terapia a Laser/métodos , Lasers de Gás/uso terapêutico , Adulto , Idoso , Idoso de 80 Anos ou mais , Pestanas , Feminino , Seguimentos , Humanos , Masculino , Pessoa de Meia-Idade , Satisfação do Paciente , Estudos Retrospectivos , Resultado do TratamentoRESUMO
Idiopathic orbital inflammation developed in the right orbit of a woman in her mid-thirties, causing tearing, photophobia, diplopia, altered depth perception, proptosis, and pain on eye movements. Computed tomography disclosed a mass involving the intraconal and extraconal nasal right orbit, extending to the orbital apex with anterior displacement of the globe, effacement of the medial rectus muscle, portions of the fat plane, and the superior oblique muscle, and bone destruction with extension of the mass through the orbital floor into the superior maxillary sinus and through the lamina papyracea into the ethmoid sinus. Orbital biopsy disclosed dense fibrous connective tissue with numerous lymphocytes and macrophages. Immunohistochemical stains supported a diagnosis of idiopathic inflammatory pseudotumor involving the orbit and sinus mucosa. Treatment with a prednisone taper and a retrobulbar injection of triamcinolone acetonide have relieved her symptoms and diminished her proptosis. This patient highlights the rare potential of idiopathic orbital inflammation to erode though bone into adjacent cranial structures.
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Pseudotumor Orbitário/patologia , Seios Paranasais/patologia , Adulto , Exoftalmia/patologia , Feminino , HumanosRESUMO
PURPOSE: To describe a minimally invasive surgical technique and its clinical outcomes with the use of acellular nerve allograft to re-establish corneal sensibility in patients with neurotrophic keratopathy. METHODS: Acellular nerve allograft was coapted to an intact supraorbital, supratrochlear, or infraorbital nerve and transferred to the affected eye. Donor nerve pedicles were isolated through a transpalpebral or transconjunctival approach. Retrospective evaluation of preoperative and postoperative corneal sensibility, ocular surface, and best-corrected visual acuity was performed in all patients. Mean follow-up period was 6 months (range: 3-10 months). RESULTS: Corneal neurotization with acellular nerve allograft was successfully performed in 7 patients with restoration of corneal sensibility and corneal epithelial integrity. In vivo confocal microscopy demonstrated increased nerve density in corneal stroma at 4 months after surgery. CONCLUSIONS: The use of acellular nerve allograft allows for a minimally invasive approach to successful corneal neurotization.
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Córnea/inervação , Doenças da Córnea/cirurgia , Procedimentos Cirúrgicos Minimamente Invasivos/métodos , Transferência de Nervo/métodos , Nervo Oftálmico/cirurgia , Procedimentos Cirúrgicos Oftalmológicos/métodos , Adolescente , Adulto , Idoso , Aloenxertos , Criança , Córnea/diagnóstico por imagem , Córnea/cirurgia , Doenças da Córnea/diagnóstico , Feminino , Seguimentos , Humanos , Masculino , Microscopia Confocal , Pessoa de Meia-Idade , Regeneração Nervosa , Estudos Retrospectivos , Resultado do Tratamento , Adulto JovemRESUMO
A 5-year-old girl with Aicardi syndrome and microphthalmia with cyst of the OD presented with progressive enlargement of the cyst causing pain. Microophthalmia with inferior cyst (35 × 25 × 12 mm) was noted at birth, and Aicardi syndrome was diagnosed at 10 months by the presence of the classic triad of callosal agenesis, infantile spasms, and chorioretinal lacunae. She underwent enucleation with cyst resection, and subsequent reconstruction with a dermis fat graft. Histopathologic study revealed adenocarcinoma of the pigmented ciliary epithelium. Full-body metastatic workup was negative. Adenocarcinoma of the pigmented ciliary epithelium is an extremely rare eye tumor with only 4 documented cases in the literature, none arising in a microophthalmic eye with cyst. Aicardi syndrome is also a rare disease that has been associated with increased incidence of malignancy and ocular abnormalities, but has never been described in association with microophthalmia with cyst or with adenocarcinoma of the pigmented ciliary epithelium. Herein, the authors present a review of the case and relevant literature.
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Adenocarcinoma/patologia , Síndrome de Aicardi/complicações , Corpo Ciliar/patologia , Cistos/patologia , Neoplasias Oculares/patologia , Microftalmia , Pré-Escolar , Feminino , HumanosRESUMO
PURPOSE: We report a patient with previous in situ melanoma of the forehead skin who was referred for treatment of a bulbar conjunctival melanoma and a separate superficially invasive melanoma of the eyelid skin, and we offer a review of the biological and clinical implications of patients who have multiple primary melanomas. METHODS: This article offers a clinicopathological correlation with a review of the relevant literature. RESULTS: An 80-year-old white man was referred for evaluation of a suspicious conjunctival tumor and a lower-eyelid lesion. Excisional biopsies revealed that both were primary melanomas arising within in situ disease. Over the span of 25 years, the patient had three separate foci of in situ melanoma, two of which spawned invasive melanoma. CONCLUSION: Separate melanomas arising from the bulbar conjunctiva and eyelid skin have rarely been reported. Multiple primary melanomas of the skin, however, are not uncommon. Based on studies of persons with multiple cutaneous melanomas, the prognosis is best predicted by the tumor with the greatest depth of invasion. Patients with multiple melanomas should be examined for dysplastic nevi, additional cutaneous melanomas, and screened periodically for future lesions. Ongoing studies enrolling patients with multiple primary melanomas are attempting to generate insights into low-penetrance susceptibility genes.
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PURPOSE: To describe spongiform scleropathy in a patient with oculodermal melanosis and without evidence of uveal melanoma. METHODS: Clinical-pathological correlation conducted in compliance with HIPPA (Health Insurance Privacy and Portability Act) regulations. RESULTS: Melanoma-associated spongiform scleropathy was an incidental finding in an 87-year-old woman with oculodermal melanocytosis treated for primary orbital melanoma. All previously reported cases of this scleropathy have been associated with uveal melanoma. CONCLUSIONS: The mechanism of scleral degeneration in melanoma-associated spongiform scleropathy is unknown, and its clinical and prognostic significance is speculative. This is the first case of a so-called melanoma-associated spongiform scleropathy reported in an eye without uveal melanoma.
RESUMO
Atypical mycobacterial infection is a rare complication following periocular surgery. The majority of previously reported cases are following dacryocystorhinostomy or lower eyelid blepharoplasty. To the authors' knowledge, there is only 1 reported culture-proven case of atypical mycobacterial infection following upper eyelid blepharoplasty. The authors describe the first known case of Mycobacterium fortuitum infection after upper eyelid blepharoplasty successfully treated with oral doxycycline.
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Blefaroplastia/efeitos adversos , Infecções Oculares Bacterianas/microbiologia , Pálpebras/microbiologia , Infecções por Mycobacterium não Tuberculosas/diagnóstico , Mycobacterium fortuitum/isolamento & purificação , Infecção da Ferida Cirúrgica/microbiologia , Idoso , Infecções Oculares Bacterianas/diagnóstico , Pálpebras/cirurgia , Feminino , Humanos , Infecções por Mycobacterium não Tuberculosas/microbiologia , Infecção da Ferida Cirúrgica/diagnósticoRESUMO
PURPOSE: To evaluate the use of hyaluronic acid gel in the management of lagophthalmos in sunken superior sulcus syndrome. INTRODUCTION: Lagophthalmos associated with orbital fat atrophy and deep superior sulcus is a known entity described previously. Orbital fat atrophy results in deep superior sulcus where skin, orbicularis muscle, and orbital septum retract posteriorly in the deep superior sulcus, leading to lagophthalmos from suboptimal orbicularis function and effective skin shortening. The authors define this condition as sunken superior sulcus syndrome (SSSS) when the deep superior sulcus leads to exposure keratopathy. Thus, the syndrome consists of deep superior sulcus, lagophthalmos, and exposure keratopathy. Although the use of hyaluronic acid gel has been proposed as a management option for paralytic lagophthalmos, its application in the treatment of lagophthalmos in SSSS has not been reported. METHODS: In this study, 5 patients (10 eyelids) with SSSS were injected with hyaluronic acid gel in the superior sulcus of the upper eyelid. Injected amount was titrated until the desired point was reached: complete or nearly complete eyelid closure. RESULTS: After an average follow up of 9.5 months, lagoph thalmos improved by 2 mm or 69% (p = 0.02) on the right side and by 1 mm or 71% (p = 0.01) on the left side. Most patients also reported significantly improved ocular comfort and appearance of the superior sulcus. The only complications noted were bruising and temporary uneven contour of the upper eyelid sulcus. CONCLUSIONS: Management of lagophthalmos in SSSS with hyaluronic acid gel is an effective and safe alternative to surgery.
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Enoftalmia/tratamento farmacológico , Doenças Palpebrais/tratamento farmacológico , Pálpebras/efeitos dos fármacos , Ácido Hialurônico/administração & dosagem , Viscossuplementos/administração & dosagem , Tecido Adiposo/patologia , Idoso , Idoso de 80 Anos ou mais , Atrofia , Enoftalmia/etiologia , Enoftalmia/fisiopatologia , Doenças Palpebrais/etiologia , Doenças Palpebrais/fisiopatologia , Pálpebras/fisiopatologia , Feminino , Géis , Humanos , Ácido Hialurônico/uso terapêutico , Injeções Intraoculares , Pessoa de Meia-Idade , Músculos Oculomotores/fisiopatologia , Órbita/patologia , Viscossuplementos/uso terapêuticoRESUMO
PURPOSE: To develop an animal model and investigate the dose-dependent effect of an intraglandular injection of botulinum toxin A (BTX-A) on tear production. METHODS: In a volume of 0.1-ml, 0.625-, 1.25-, or 2.5-U BTX-A was injected transconjunctivally in the superolateral lobe of the lacrimal gland of adult New Zealand white female rabbits. In the contralateral lacrimal gland, 0.1 ml of 0.9% sodium chloride was injected. Prior to injection and at 1-week postinjection, photographs were taken to evaluate pre- and postoperative eyelid position. Fluorescein and Rose Bengal stain were used to evaluate the corneal surface, and Schirmer test was used to assess tear production. RESULTS: Glands injected with the intermediate (1.25 U) and the highest (2.5 U) doses of BTX-A displayed a statistically significant decrease in tear production (p = 0.002 and 0.007, respectively) compared with the contralateral saline-injected glands at 1 week. No corneal pathologic factors from excessive dryness were observed following the injection. While postinjection ptosis was observed (p = 0.025), no difference was seen between BTX-A and saline-injected eyes. CONCLUSIONS: In rabbits, intraglandular injection of BTX-A resulted in decreased tear production at 1 week. No additional reduction in tear production was seen with a BTX-A dose greater than 1.25 U, suggesting glandular receptor saturation at this dose. Despite suppression of tear production, no corneal pathologic factors were observed. Further studies are needed to refine this animal model with the ultimate goal of determining optimum delivery route and concentration to reduction in tear production while minimizing side effects in patients.
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Toxinas Botulínicas Tipo A/administração & dosagem , Aparelho Lacrimal/efeitos dos fármacos , Fármacos Neuromusculares/administração & dosagem , Lágrimas/metabolismo , Animais , Túnica Conjuntiva , Relação Dose-Resposta a Droga , Feminino , Fluoresceína , Corantes Fluorescentes , Fluorofotometria , Injeções , Aparelho Lacrimal/metabolismo , Modelos Animais , Coelhos , Rosa BengalaRESUMO
PURPOSE: To compare the effects of topical dry eye medications including anti-inflammatory agents and lubricant eyedrops for the treatment of keratoconjunctivitis sicca (KCS) in a botulinum toxin B (BTX-B)-induced mouse model. METHODS: CBA mice were randomized into 10 groups. The first 5 groups received a transconjunctival injection of saline into the lacrimal gland, and the remaining groups were injected with 0.05 mL of 20 mU BTX-B. Each group received treatment with 0.1% fluorometholone (FML), 0.05% cyclosporine A (CsA), a 50:50 combination of FML and CsA, artificial tears, or saline 3 days after injections. Tear production, corneal staining, and blink rate were compared in each of the 10 groups. RESULTS: Tear production in BTX-B-injected CsA-treated, FML-treated, and combined-treated groups started to return to baseline level within 2 weeks of treatment, whereas those treated with saline or artificial tears still exhibited reduction of lacrimation up to 4 weeks after injection. Topical FML significantly reversed the staining score within 1 week of treatment. The improvement of corneal staining in BTX-B-challenged combined-treated and CsA-treated groups occurred later within 2 weeks after treatment. No significant improvement in corneal staining was observed for the BTX-B-injected mice treated with artificial tears or saline. No significant changes were noted in blink frequency between the control and study groups undergoing the various dry eye therapies. CONCLUSION: The therapeutic effects of dry eye medications in a BTX-B-induced mouse model of KCS are similar to the human response.