Characteristics of pseudophakic retinal detachment and risk factors of recurrence.

BACKGROUND: The present study was designed to gain knowledge about the prognostic factors and evolution of pseudophakic retinal detachment (PRD) and to analyse the main characteristics of PRD, such as the mean time to retinal detachment following cataract surgery, as well as the clinical factors associated with the risk of recurrence and worse anatomical and functional outcomes. METHODS: This was a retrospective monocentric study of 330 patients with PRD who underwent surgery between 2012 and 2020. All patients were pseudophakic and were referred for retinal detachment surgery at Donostia University Hospital (Terciary Hospital, Spain). RESULTS: The mean age of the patients at the time of phacoemulsification was 63.06 ±â€¯10.8 years, and 49.09% of them had moderate myopia [axial length (AL) (23.5-26.5 mm)]. In our series, macular detachment was evident in 69.09% (n = 228) of the patients. The mean time that elapsed between phacoemulsification and PRD surgery was 4.04 ±â€¯4.17 years, which was reduced by half in the event of surgical complications (2.24 ±â€¯2.65). The rate of PRD was 28.79%. The anatomical results in terms of retinal reapplication were better with the combination of vitrectomy and scleral buckling (83.1% vs. 70.5%) (p = 0,127) compared with vitrectomy. The variables associated with a higher risk of recurrence were male sex (hazard ratio (HR) = 1.75), macular detachment (HR = 2.00) and the presence of proliferative vitreoretinopathy (PVR) (HR = 3.21). CONCLUSIONS: PRD usually occurs within 4 years of phacoemulsification, although it may occur significantly earlier in the event of surgical complications. Macular involvement, PVR, and male sex are all associated with a higher risk of PRD recurrence.

Corneal densitometry after photorefractive keratectomy, laser-assisted in situ keratomileusis, and small-incision lenticule extraction.

PurposeThe aim of this study was to gain greater insight into the corneal densitometry changes occurring as a result of refractive surgery and to compare these changes across three widely used surgical techniques, namely, photorefractive keratectomy (PRK), laser-assisted in situ keratomileusis with a femtosecond laser (LASIK-FS), or ReLEx small-incision lenticule extraction (ReLEx SMILE).Patients and methodsThree hundred and thirty-six patients (184 male and 152 female patients) participated in this study. They were split into three groups according to the refractive surgery technique they had undergone: LASIK-FS (74 patients), PRK (153 patients), and ReLEx SMILE (109 patients). All participants underwent an exhaustive eye examination both before and after surgery. Pre- and postoperative corneal densitometry was measured using an Oculus Pentacam system.ResultsThe mean postoperative total corneal densitometry values were 16.53±1.94 for the LASIK-FS group, 15.53±1.65 for PRK, and 16.10±1.54 for ReLEx SMILE. When corneal densitometry was analyzed for specific corneal areas, the values corresponding to the 0-2, 2-6, and 6-10 mm annuli were similar across the three surgical techniques. The only region in which differences were found was the peripheral area (P<0.05), but these variations across techniques were not statistically significant.ConclusionsCorneal densitometry can be used as an objective metric to assess corneal response to refractive surgery, and to monitor patients over time. Corneal densitometry was not negatively affected by any of the refractive surgical procedures under evaluation.

Síndrome de aumento agudo idiopático de mancha ciega asociado a neovascularización coroidea / Acute idiopathic blind spot enlargement syndrome associated with choroidal neovascularization

Caso clínico: Mujer de 17 años que consulta por fotopsias y escotoma en OI, con antecedente de neovascularización coroidea contralateral. La exploración sugiere un síndrome de aumento agudo idiopático de mancha ciega. La evolución sin tratamiento es favorable, con disminución del escotoma y sin empeoramiento de su agudeza visual. Discusión: El síndrome de aumento agudo idiopático de mancha ciega es un síndrome raro y benigno, propio de mujeres jóvenes. Se debe hacer un diagnóstico diferencial con el síndrome de puntos blancos evanescentes y la retinopatía aguda zonal externa oculta. Tras revisar la bibliografía, no hemos hallado ningún caso descrito previamente en asociación con la neovascularización coroidea, hecho que nos obliga a cuestionarnos su benignidad (AU)

Clinical case: A 17 year old female consulting due to photopsia and a sudden loss of visual field in left eye (OS), with previous contralateral choroidal neovascularization. The examination suggested an acute idiopathic blind spot syndrome. The progress without treatment was favorable, with a reduction in the scotoma and without a worsening of her visual acuity. Discussion: This case report is about an unusual and benign syndrome, typical of young women. Differential diagnosis must be made between the evanescent white dot syndrome and the acute zonal occult outer retinopathy. To our knowledge, this is the first published case associated with choroidal neovascularization, a fact that leads us to question its benignancy (AU)

[Acute idiopathic blind spot enlargement syndrome associated with choroidal neovascularization]. / Síndrome de aumento agudo idiopático de mancha ciega asociado a neovascularización coroidea.

CLINICAL CASE: A 17 year old female consulting due to photopsia and a sudden loss of visual field in left eye (OS), with previous contralateral choroidal neovascularization. The examination suggested an acute idiopathic blind spot syndrome. The progress without treatment was favorable, with a reduction in the scotoma and without a worsening of her visual acuity. DISCUSSION: This case report is about an unusual and benign syndrome, typical of young women. Differential diagnosis must be made between the evanescent white dot syndrome and the acute zonal occult outer retinopathy. To our knowledge, this is the first published case associated with choroidal neovascularization, a fact that leads us to question its benignancy.

Prevalencia de retinopatía diabética mediante cribado con retinógrafo no midriático / Prevalence of diabetic retinopathy using non-mydriatic retinography

Objetivo. Estudiar la prevalencia de retinopatía diabética mediante retinógrafo no midriático y valorar su utilidad como método de cribaje en la comarca de Donosti aldea. Métodos. Se realizó un estudio prospectivo incluyendo 2.444 pacientes diabéticos derivados por su médico de atención primaria y/o endocrinólogo. Se realizó una retinografía con cámara no midriática en los 45 grados centrales, agudeza visual y tonómetro de no contacto en todos los pacientes. La información se derivó al hospital para ser evaluado por un oftalmólogo especialista en retina. Resultados. El 15,02% de los pacientes eran diabéticos en tratamiento dietético, el 62,55% eran diabéticos no insulinodependientes y el 22,43% eran diabéticos insulinodependientes. Observamos una prevalencia de retinopatía diabética del 9,36%. El 5,27% presentó retinopatía diabética no proliferativa (RDNP) leve, el 2,21% RDNP moderada, el 1,67% RDNP severa y el 0,12% RD proliferativa. El 8,22% presentó hipertensión ocular. Conclusiones. Se observa una baja prevalencia de RD en los pacientes de nuestra muestra. La utilización de telemedicina con cámara no midriática es un arma importante para el diagnóstico precoz de la retinopatía diabética y puede aplicarse a otras patologías oftalmológicas como el glaucoma (AU)

Objectives. To establish the prevalence of diabetic retinopathy (RD) diagnosed after non-mydriatic retinography and to evaluate its utility as a screening test in the area of San Sebastián. Methods. A prospective study including 2,444 diabetic patients sent by their primary attention doctors and/or their endocrinologists. All patients underwent non mydriatic retinography in the central 45 degrees; visual acuity was explored, as well as IOP through non-contact tonometry. The retinographies and information obtained were sent to our hospital and were revised by an ophthalmologist from the Retina Department. Results. Fifteen point zero two (15.02%) of the patients suffered from diabetes and were under dietary treatment, 62.55% suffered from non-insulin-dependant diabetes, and 22.43% suffered from insulin-dependant diabetes. The prevalence of diabetic retinopathy was 9.36%; 5.27% mild non-proliferative diabetic retinopathy (DR); 2.21% moderate-non-proliferative DR; 1.67 % severe non-proliferative DR; and 0.05% proliferative-diabetic retinopathy. Eight point two two (8.22%) of the sample studied was diagnosed with ocular hypertension. Conclusions. We observed a low prevalence of DR in our sample. Use of non-mydriatic retinopathy in telemedicine plays an important role in the early diagnosis of diabetic retinopathy and it can be applied to other ophthalmic diseases (AU)

[Prevalence of diabetic retinopathy using non-mydriatic retinography]. / Prevalencia de retinopatía diabética mediante cribado con retinógrafo no midriático.

OBJECTIVES: To establish the prevalence of diabetic retinopathy (RD) diagnosed after non-mydriatic retinography and to evaluate its utility as a screening test in the area of San Sebastián. METHODS: A prospective study including 2,444 diabetic patients sent by their primary attention doctors and/or their endocrinologists. All patients underwent non-mydriatic retinography in the central 45 degrees; visual acuity was explored, as well as IOP through non-contact tonometry. The retinographies and information obtained were sent to our hospital and were revised by an ophthalmologist from the Retina Department. RESULTS: Fifteen point zero two (15.02%) of the patients suffered from diabetes and were under dietary treatment, 62.55% suffered from non-insulin-dependant diabetes, and 22.43% suffered from insulin-dependant diabetes. The prevalence of diabetic retinopathy was 9.36%; 5.27% mild non-proliferative diabetic retinopathy (DR); 2.21% moderate-non-proliferative DR; 1.67 % severe non-proliferative DR; and 0.05% proliferative-diabetic retinopathy. Eight point two two (8.22%) of the sample studied was diagnosed with ocular hypertension. CONCLUSIONS: We observed a low prevalence of DR in our sample. Use of non-mydriatic retinopathy in telemedicine plays an important role in the early diagnosis of diabetic retinopathy and it can be applied to other ophthalmic diseases.

Automatized large diameter lamellar keratoplasty and stem cell transplantation for the treatment of ocular surface diseases with limbal insufficiency.

PURPOSE: To report a new surgical procedure for the treatment of ocular surface diseases associated with severe limbal insufficiency. METHODS: A retrospective review of four patients with severe ocular surface disease who required stem cell transplantation and keratoplasty for the correction of limbal insufficiencies. They underwent large diameter lamellar keratoplasty with microkeratome. When limbal dysfunction was associated with limited alteration of the ocular surface and transparent deep corneal stroma only the anterior corneal stroma was transplanted. When the entire corneal thickness was compromised, both anterior and deep donor buttons were transplanted. RESULTS: Patients remained stable and improved their visual acuity after surgery. Best-corrected visual acuity ranged from 20/200 to 20/30. No corneal graft rejections were found. The main complication found in one of our patients was a central stromal opacity which required a secondary penetrating keratoplasty. CONCLUSIONS: Automatized large diameter lamellar keratoplasty provides a safe and successful alternative to limbal transplantation for limbal insufficiency associated with corneal opacity. This technique enables a single-stage surgical procedure and the use of a single donor which reduces the risk of rejection. In addition, better refractive results are achieved due to the quality of the interface and the absence of corneal sutures.

[Prospective randomized trial comparing Discovisc versus Healon in phacoemulsification]. / Estudio prospectivo randomizado comparando Discovisc versus Healon en facoemulsificación.

OBJECTIVE: To compare the intraoperative behaviour of both, DisCoVisc and Healon used as viscoelastics in cataract surgery. METHOD: We prospectively evaluated 35 patients with cataracts who underwent phacoemulsification and intraocular lens implantation. Patients were randomized into two groups. Group A included 17 patients in where Healon was used as a viscoelastic, whereas group B included 18 patients in where the viscoelastic used was DisCoVisc. After each procedure, the surgeon filled in a questionnaire describing the behaviour of the viscoelastic during the different stages of phacoemulsification. RESULTS: DisCoVisc behaved as both cohesive and dispersive viscoelastic during capsulorrhexis, phacoemulsification and viscoelastic aspiration, whereas Healon acted as a cohesive substance during all surgical stages. DisCoVisc enabled better visualization and transparency during all the surgical stages and maintains the capsular bag better during the intraocular lens implantation. Viscoelastic aspiration was easier with Healon. CONCLUSIONS: DisCoVisc is a new viscosurgical device with both cohesive and dispersive properties, which avoids using two different viscoelastics to improve the performance at different surgical stages. DisCoVisc has been shown to be more transparent and provides better anterior chamber maintenance when compared with Healon. Healon was more easily aspirated due to its cohesive character.

Estudio prospectivo randomizado comparando Discovisc(R) versus Healon(R) en facoemulsificación / Prospective randomized trial comparing Discovisd(R) versus Healon(R) in phacoemulsification

Propósito: Comparar el comportamiento de ambos viscoelásticos intraoperatoriamente. Método: Estudio prospectivo aleatorio en el que se incluyen 35 pacientes con catarata, intervenidos mediante facoemulsificación ultrasónica e implantación de lente intraocular. En el grupo A, se incluyeron 17 pacientes en los que se utilizó Healon(R) (hialuronato sódico 1%) y en el grupo B, 18 pacientes en los que se utilizó DisCoVisc(R) (ácido hialurónico al 1,6% y condroitín sulfato al 4%). Tras la intervención el cirujano rellenó un cuestionario sobre el comportamiento de los viscoelásticos en cada momento de la cirugía. Resultados: El DisCoVisc(R) se ha comportado como dispersivo y cohesivo durante la capsulorrexis, la facoemulsificación y la aspiración del viscoelástico, mientras el Healon® ha demostrado ser una sustancia cohesiva en dichas fases. El DisCo- Visc(R) permite una mejor visualización y transparencia durante todos los pasos quirúrgicos, y mantiene mejor el el espacio capsular durante la implantación de la lente intraocular. La aspiración del viscoelástico ha resultado ser más fácil utilizando Healon(R). Conclusiones: El DisCoVisc(R) es un nuevo viscoelástico que presenta propiedades dispersivas y cohesivas, evitando la utilización de dos viscoelásticos (uno cohesivo y otro dispersivo) para adaptarse a las necesidades de todos los pasos de la facoemulsificación. Ha demostrado ofrecer mayor transparencia en la cirugía con respecto al Healon(R) y un mejor mantenimiento de la cámara anterior en todas las fases de la cirugía. La aspiración del Healon(R) se realizó con mayor sencillez por su carácter cohesivo

Objective: To compare the intraoperative behaviour of both, DisCoVisc(R) and Healon(R) used as viscoelastics in cataract surgery. Method: We prospectively evaluated 35 patients with cataracts who underwent phacoemulsification and intraocular lens implantation. Patients were randomized into two groups. Group A included 17 patients in where Healon(R) was used as a viscoelastic, whereas group B included 18 patients in where the viscoelastic used was DisCoVisc(R). After each procedure, the surgeon filled in a questionnaire describing the behaviour of the viscoelastic during the different stages of phacoemulsification. Results: DisCoVisc(R) behaved as both cohesive and dispersive viscoelastic during capsulorrhexis, phacoemulsification and viscoelastic aspiration, whereas Healon® acted as a cohesive substance during all surgical stages. DisCoVisc(R) enabled better visualization and transparency during all the surgical stages and maintains the capsular bag better during the intraocular lens implantation. Viscoelastic aspiration was easier with Healon(R). Conclusions: DisCoVisc(R) is a new viscosurgical device with both cohesive and dispersive properties, which avoids using two different viscoelastics to improve the performance at different surgical stages. DisCoVisc(R) has been shown to be more transparent and provides better anterior chamber maintenance when compared with Healon®. Healon® was more easily aspirated due to its cohesive character

[Floppy-iris syndrome associated with tamsulosin. A prospective case-control study]. / Síndrome de iris fláccido por tamsulosina. Estudio prospectivo frente a grupo control.

OBJECTIVE: The main objectives of this study were: To assess the incidence of the intraoperative floppy-iris syndrome associated with tamsulosin and to analyse the incidence of intraoperative and postoperative complications as compared to a control group. Secondary objectives were: to describe the pupillary modifications associated with tamsulosin and to quantify the endothelial cell loss. METHODS: A prospective review of 38 eyes of 38 patients was performed. Patients were assigned to two different groups. Group 1 (cases) included 19 eyes of 19 male patients taking tamsulosin, and group 2 (controls) included 19 eyes of 19 male patients not taking tamsulosin. RESULTS: Only two patients (10%) of our study had the complete triad seen in floppy-iris syndrome; 9 patients (47%) showed 2 of the 3 main features of the syndrome and only 2 patients showed iris billowing during phacoemulsification. None of the patients in group 2 showed any of the characteristic intraoperative features. The complication rate was similar in both groups. CONCLUSIONS: Intraoperative floppy-iris syndrome occurred in 67% of the patients treated with tamsulosin. The only postoperative secondary effect was a lower pupil reactivity in patients taking tamsulosin.

Síndrome de iris fláccido por tamsulosina. Estudio prospectivo frente a grupo control / floppy-iris syndrome associated with Tamsulosin. A prospective case-control study

Objetivos: Los objetivos de este estudio son: determinar la incidencia real del síndrome del iris fláccido intraoperatorio asociado al tratamiento con tamsulosina y analizar las diferentes tasas de complicaciones tanto intra como postoperatorias frente a un grupo control. Los objetivos secundarios son: describir las alteraciones pupilares asociadas a la toma de tamsulosina y cuantificar la pérdida endotelial de la cirugía de catarata. Método: Estudio prospectivo que incluye 38 ojos de 38 pacientes divididos en dos grupos. El grupo 1 (casos) compuesto por 19 ojos de 19 pacientes varones en tratamiento con tamsulosina y el grupo 2 (controles) compuesto por 19 ojos de 19 varones sin tratamiento con tamsulosina. En todos los casos, se trata de pacientes consecutivos que acuden a nuestro hospital para ser intervenidos de catarata. Resultados: La incidencia de iris fláccido en nuestra serie se limita a dos pacientes (10%) que presentaron la tríada completa, 9 pacientes (47%) presentaron 2 de los 3 signos, y solo dos pacientes (10%) presentaron bamboleo del iris aislado. Ninguno de los pacientes del grupo control presentó característica alguna de este síndrome. La incidencia de complicaciones fue similar en ambos grupos. Conclusiones: Como conclusión mencionar que el síndrome IFIS se presenta en el 67% de los pacientes en tratamiento con tamsulosina. El único efecto secundario postoperatorio a destacar ha sido la observación de una menor reactividad pupilar en los pacientes tratados con tamsulosina, circunstancia no descrita en la literatura

Objective: The main objectives of this study were: To assess the incidence of the intraoperative floppyiris syndrome associated with tamsulosin and to analyse the incidence of intraoperative and postoperative complications as compared to a control group. Secondary objectives were: to describe the pupillary modifications associated with tamsulosin and to quantify the endothelial cell loss. Methods: A prospective review of 38 eyes of 38 patients was performed. Patients were assigned to two different groups. Group 1 (cases) included 19 eyes of 19 male patients taking tamsulosin, and group 2 (controls) included 19 eyes of 19 male patients not taking tamsulosin. Results: Only two patients (10%) of our study had the complete triad seen in floppy-iris syndrome; 9 patients (47%) showed 2 of the 3 main features of the syndrome and only 2 patients showed iris billowing during phacoemulsification. None of the patients in group 2 showed any of the characteristic intraoperative features. The complication rate was similar in both groups. Conclusions: Intraoperative floppy-iris syndrome occurred in 67% of the patients treated with tamsulosin. The only postoperative secondary effect was a lower pupil reactivity in patients taking tamsulosin

[Retrobulbar optic neuritis associated with Infliximab]. / Neuritis óptica desmielinizante tras tratamiento con Infliximab.

CASE REPORT: We report the case of a 76-year-old woman who attended our hospital because of a sudden loss of visual acuity in her left eye. The problem appeared to be that of retrobulbar optic neuritis. However, the age of the patient together with the simultaneous use of Infliximab to treat her rheumatoid arthritis, suggests the demyelination may have been associated with the Infliximab use. DISCUSSION: TNFa inhibitors (including Infliximab) are associated with demyelinating diseases including optic neuritis.

Neuritis óptica desmielinizante tras tratamiento con infliximab / retrobulbar optic neuritis associated with infliximab

Caso clínico: Se describe el caso de una paciente de 76 años de edad que presenta una disminución brusca de la agudeza visual en su ojo izquierdo. El cuadro es compatible con una neuritis óptica retrobulbar que en el contexto de una paciente de esta edad y en tratamiento con Infliximab por una artritis reumatoide sugiere la posibilidad de que se trate de una desmielinización asociada al tratamiento con Infliximab. Discusión: Los inhibidores del TNFα (entre ellos el Infliximab) pueden dar lugar a eventos desmielinizantes entre los cuales puede encontrarse una neuritis óptica retrobulbar

Case report: We report the case of a 76-year-old woman who attended our hospital because of a sudden loss of visual acuity in her left eye. The problem appeared to be that of retrobulbar optic neuritis. However, the age of the patient together with the simultaneous use of Infliximab to treat her rheumatoid arthritis, suggests the demyelination may have been associated with the Infliximab use. Discussion: TNFα inhibitors (including Infliximab) are associated with demyelinating diseases including optic neuritis

Effects of bacterial adhesion with respect to the type of material, structure and design of intraocular lenses.

The properties of the biomaterials used to constitute lenses are important factors choosing a lens for human implantation because these can influence in posterior clinical evolutions of patients. In this study, different characteristics of intraocular lenses such as chemical composition, surface roughness and lens design have been investigated in terms of their influence into a pathological environment. Eight commercial lenses were tested by optical profiling, Infrared spectra with Fourier transformation (FTIR), water-material contact angle and scanning electron microscope (SEM) to know their chemical composition and structural characteristics. These lenses were then exposed to infectious conditions in order to evaluate their responses to the bacterial environment.

[Melanocytoma of the ciliary body]. / Melanocitoma de cuerpo ciliar.

CLINICAL CASE: We report the case of a 25 year old woman who attended our Hospital with a pigmented lesion in anterior chamber angle of her right eye. She complained of reduced visual acuity on the same eye. On examination, and once complementary tests were performed, a pigmented lesion located on the iris root and ciliary body of her right eye was confirmed. A decision to perform a local resection was made and there were no surgical complication. Histology results confirmed the diagnosis of ciliary body melanocytoma. DISCUSSION: Ciliary body melanocytoma is a benign rare lesion with only 40 cases described in the literature. A local resection of this benign lesion should be considered as alternative to enucleation, even though differential diagnosis with malignant melanoma must also be considered.

Melanocitoma de cuerpo ciliar / Melanocytoma of the ciliary body

Caso clínico: Se presenta el caso de una mujer de 25 años que acudió a nuestro servicio con una lesión melánica en ángulo camerular de ojo derecho (OD). Refirió disminución de la agudeza visual (AV) en ese ojo y tras la exploración y la práctica de pruebas complementarias se confirmó la existencia de una lesión melánica localizada en raíz de iris y cuerpo ciliar. Se decidió practicar una resección local de la lesión que transcurrió sin complicaciones. Su estudio anatomopatológico reveló que se trataba de un melanocitoma de cuerpo ciliar.Discusión: El melanocitoma de cuerpo ciliar es un tumor pigmentado benigno muy poco frecuente habiendo tan solo 40 casos descritos en la literatura. Al tratarse de una lesión benigna, y aunque se plantea el diagnóstico diferencial con el melanoma maligno, la resección local de este tipo de tumores debe ser considerada frente a la enucleación

Clinical case: We report the case of a 25 year old woman who attended our Hospital with a pigmented lesion in anterior chamber angle of her right eye. She complained of reduced visual acuity on the same eye. On examination, and once complementary tests were performed, a pigmented lesion located on the iris root and ciliary body of her right eye was confirmed. A decission to perform a local resection was made and there were no surgical complication. Histology results confirmed the diagnosis of ciliary body melanocitoma.Discussion: Ciliary body melanocytoma is a benign rare lesion with only 40 cases described in the literature. A local resection of this benign lesion should be considered as alternative to enucleation, even though differential diagnosis with malignant melanoma must also be considered

Lentes intraoculares amarillas: filtrando la luz azul / Yellow-tinted intraocular lenses: blocking blue light

No disponible

[Surgical arteriovenous decompression (sheathotomy) in branch retinal vein occlusion: retrospective study]. / Descompresión venosa quirúrgica en las oclusiones de rama venosa retinianas: estudio retrospectivo.

PURPOSE: To evaluate best-corrected visual acuity (BCVA), incidence of neovascularization and angiographic changes in patients with branch retinal vein occlusion (BRVO) treated with surgical decompression by sheathotomy. METHODS: Retrospective study including 17 cases of temporal BRVO with macular edema treated with surgical decompression. Results of BCVA, incidence of neovascularization and vitreous hemorrhage 6 months following surgery are included. Angiographic changes in the first 8 cases a month after decompression are also evaluated. RESULTS: The mean postoperatory BCVA was 0.40 with a mean improvement of 0.26. Seventy one percent of patients (12/17) improved 2 or more visual acuity lines and 53% of patients (9/17) improved 4 or more lines. Only in one case the vision worsened. There was no evidence of retinal neovascularization or rubeosis iridis six months after surgery. CONCLUSIONS: Surgical decompression is a therapeutical option for those patients suffering BRVO with macular edema. Our initial results are encouraging, not only regarding visual acuity improvement, but also because of a decreased risk of neovascularization. No patient included in our study developed neovascularization.

[Study of two immunosuppresive strategies after limbal allograft transplantation]. / Estudio de dos pautas de inmunosupresión tras alotrasplante límbico.

PURPOSE: Comparison of two immunosuppressive strategies after limbal allograft transplantation in an experimental model of ocular surface chemical burn. METHODS: Twenty albino rabbits underwent corneal and limbal chemical burn with NaOH. One week later limbal transplantation was performed. Clinical assessments included measurements of epithelial defect, stromal opacity and neovascularization areas, using a computerized planimetry system 0, 7, 15, 30, 60 and 90 days after the chemical burn. Histologic examination was performed at 3 months, after sacrifice of the animals. Two immunosuppressive strategies were evaluated: topical cyclosporin A on constant dosage (group 1), and a combination of topical cyclosporin A and dexamethasone followed by a tapered dosage of topical cyclosporin A (group 2). RESULTS: No statistical differences were observed between both groups regarding all of the variables 3 months after the chemical burn. Differences in the stromal opacity area were detected on day 7 (43.33 D.E. 4.84 vs 36.67 D.E. 3.88; p<0.01), day 15 (41.68 3 D.E.95 vs 33.6 D.E. 1.99; p<0.01), and day 30 (40.1 D.E. 5.45 vs 32.52 D.E. 7.33; p<0.05). As for the neovascularization area, differences were detected on day 7 (1.92 D.E. 0.48 vs 3.73 D.E. 1.18; p<0.01), day 15 (7.08 D.E. 1.54 vs 4.42 D.E. 1.68; p<0.01), and day 60 (4.9 D.E. 2.58 vs 9.65 D.E. 5.55; p<0.05). CONCLUSIONS: There are no long-term differences between both immunosuppressive strategies regarding all the studied variables (Arch Soc Esp Oftalmol 2003; 78: 29-34).