ABSTRACT
Propósito Existe una constante controversia entre la realización de la cirugía de la catarata de un ojo o de ambos ojos en la misma sesión quirúrgica. El objetivo de este estudio es revisar la evidencia científica sobre eficacia y seguridad, valorar la reducción de costes de la cirugía de catarata bilateral simultánea en el mismo día en comparación con la cirugía de la catarata secuencial en 2tiempos, así como comparar la tasa de complicaciones asociadas. Métodos Se ha hecho una búsqueda exhaustiva en las bases de datos PubMed y Web of Science para identificar artículos relevantes sobre cirugía de catarata bilateral secuencial desde el año 2000 hasta el 31 de diciembre de 2020. Resultados La literatura revisada muestra evidencias sólidas que demuestran la eficacia y seguridad de la cirugía de la catarata bilateral simultánea cuando se han seguido protocolos muy estrictos de esterilidad entre la cirugía de cada ojo. Bajo estas condiciones, en los estudios no se ha encontrado una mayor tasa de complicaciones postoperatorias que en la cirugía de catarata secuencial en 2tiempos. Conclusiones Existe evidencia sustancial de que la cirugía de catarata bilateral simultánea es una adecuada opción quirúrgica para la resolución de la catarata, que provoca una rápida rehabilitación visual y sin mayor número de complicaciones que la cirugía secuencial en 2tiempos cuando se extreman los protocolos de esterilidad entre los procedimientos de ambos ojos. Además, proporciona una reducción en el gasto sanitario. Existe un miedo psicológico a la realización de la cirugía bilateral por el potencial riesgo de complicaciones que afectaría a los 2ojos operados. Dentro del presente artículo discutimos la eficacia, seguridad, tasa de complicaciones y costes asociados en la cirugía de catarata bilateral simultánea en el mismo acto quirúrgico (AU)
Purpose There is a constant controversy between performing cataract surgery for one eye or for both eyes in the same surgical session. The objective of this study is to review the scientific evidence on the efficacy and safety, determine the reduction of costs of sequential bilateral cataract surgery on the same day compared to unilateral cataract surgery, as well as to compare the rate of associated complications. Methods A comprehensive search of the PubMed and Web of Science databases has been conducted to identify relevant articles on sequential bilateral cataract surgery from 2000 to 31 of December of 2020. Results Literature shows that there is strong evidence demonstrating the efficacy and safety of same-day sequential bilateral cataract surgery. Studies have not found a higher rate of postoperative complications compared to unilateral cataract surgery. Conclusions Same-day sequential bilateral cataract surgery is a good surgical option for the resolution of the cataract, provides rapid visual rehabilitation and without greater risks than unilateral surgery. It also provides a reduction in sanitary costs. There is a psychological fear of performing bilateral surgery due to the potential risk of complications that would affect both operated eyes. In this article we discuss the efficacy, safety, complications rate and associated costs in sequential bilateral cataract surgery in the same surgical act (AU)
Subject(s)
Humans , Cataract Extraction/methods , Cataract Extraction/adverse effects , Postoperative Complications , PhacoemulsificationABSTRACT
PURPOSE: There is a constant controversy between performing cataract surgery for one eye or for both eyes in the same surgical session. The objective of this study is to review the scientific evidence on the efficacy and safety, determine the reduction of costs of sequential bilateral cataract surgery on the same day compared to unilateral cataract surgery, as well as to compare the rate of associated complications. METHODS: A comprehensive search of the PubMed and Web of Science databases has been conducted to identify relevant articles on sequential bilateral cataract surgery from 2000 to 31 of December of 2020. RESULTS: Literature shows that there is strong evidence demonstrating the efficacy and safety of same-day sequential bilateral cataract surgery. Studies have not found a higher rate of postoperative complications compared to unilateral cataract surgery. CONCLUSIONS: Same-day sequential bilateral cataract surgery is a good surgical option for the resolution of the cataract, provides rapid visual rehabilitation and without greater risks than unilateral surgery. It also provides a reduction in sanitary costs. There is a psychological fear of performing bilateral surgery due to the potential risk of complications that would affect both operated eyes. In this article we discuss the efficacy, safety, complications rate and associated costs in sequential bilateral cataract surgery in the same surgical act.
Subject(s)
Cataract Extraction , Cataract , Ophthalmology , Phacoemulsification , Cataract/complications , Humans , Postoperative Complications/epidemiology , Postoperative Complications/etiologySubject(s)
Aniridia , Ophthalmology , Aniridia/diagnosis , Aniridia/therapy , Humans , Visual AcuityABSTRACT
Congenital aniridia is a rare genetic disease associated with mutations in the PAX6 gene. Changes in the lens in aniridia can be alterations of size and shape, of position - which generally reveal zonular weakness and determines subluxation of the lens - and mainly changes in transparency, cataracts, with variable morphology of polar, cortical, subcapsular, lamellar, and more rarely, nuclear cataract. Visual acuity and quality of vision in patients with congenital aniridia complicated by cataracts can be improved by carefully planned surgery, when lack of media transparency justifies surgical indication. Most patients have some improvement in visual acuity and quality of retinal image. Cataract surgery with aniridia is complicated by pathological changes due to the underlying cause of the aniridia. Challenges include corneal opacification, friable capsule and, above all, iris and pupil reconstruction. It can also determine late complications, such as secondary glaucoma or deterioration of pre-existent glaucoma, and corneal endothelial decompensation. After crystalline lens surgery in these patients, either by cataract or dislocation, for visual rehabilitation there are various techniques such as keratopigmentation, prosthetic iris devices or Morcher intraocular lenses with a black diaphragm. An appropriate individualised surgical plan should be selected depending on patient and surgical experience, in order to minimise complications and give the best chance of postoperative success.
Subject(s)
Aniridia , Lens, Crystalline , Lenses, Intraocular , Aniridia/genetics , Humans , Lens Implantation, Intraocular , Retrospective StudiesABSTRACT
This review updates the knowledge about the morphological assessment of the foveal hypoplasia in congenital aniridia and resumes the reported genotype-phenotype correlations known to date. Congenital aniridia is a pan ocular disease. Although iris absence is considered the hallmark of this entity, foveal hypoplasia is present in 94.7%-84% of patients. A foveal morphology assessed by optical coherence tomography in which external retina structures can be identified, with presence of the lengthening of photoreceptors outer segment and a greater external retinal thickness, is associated with a better visual outcome, regardless a foveal pit is identified or not. This analysis can be performed once the external retina has completed its differentiation, by 6 years old. PAX6 mutations that introduce premature termination codon, C terminal extension or PAX6 involving deletions have been related to lesser foveal differentiation. Better foveal differentiation has been associated to non-coding PAX6 mutations.
Subject(s)
Aniridia , Aniridia/diagnosis , Child , Fovea Centralis , Humans , Iris , PAX6 Transcription Factor/genetics , Tomography, Optical CoherenceABSTRACT
This review updates the knowledge about the morphological assessment of the foveal hypoplasia in Congenital Aniridia and resumes the reported genotype-phenotype correlations known to date. Congenital Aniridia is a pan ocular disease. Although iris absence is considered the hallmark of this entity, foveal hypoplasia is present in 94.7-84% of patients. A foveal morphology assessed by optical coherence tomography in which external retina structures can be identified, with presence of the lengthening of photoreceptors outer segment and a greater external retinal thickness, is associated with a better visual outcome, regardless a foveal pit is identified or not. This analysis can be performed once the external retina has completed its differentiation, by 6 years old. PAX6 mutations that introduce premature termination codon, C terminal extension or PAX6 involving deletions have been related to lesser foveal differentiation. Better foveal differentiation has been associated to non-coding PAX6 mutations.
ABSTRACT
Congenital aniridia is a rare genetic disease associated with mutations in the PAX6 gene. Changes in the lens in aniridia can be alterations of size and shape, of position - which generally reveal zonular weakness and determines subluxation of the lens - and mainly changes in transparency, cataracts, with variable morphology of polar, cortical, subcapsular, lamellar, and more rarely, nuclear cataract. Visual acuity and quality of vision in patients with congenital aniridia complicated by cataracts can be improved by carefully planned surgery, when lack of media transparency justifies surgical indication. Most patients have some improvement in visual acuity and quality of retinal image. Cataract surgery with aniridia is complicated by pathological changes due to the underlying cause of the aniridia. Challenges include corneal opacification, friable capsule and, above all, iris and pupil reconstruction. It can also determine late complications, such as secondary glaucoma or deterioration of pre-existent glaucoma, and corneal endothelial decompensation. After crystalline lens surgery in these patients, either by cataract or dislocation, for visual rehabilitation there are various techniques such as keratopigmentation, prosthetic iris devices or Morcher intraocular lenses with a black diaphragm. An appropriate individualised surgical plan should be selected depending on patient and surgical experience, in order to minimise complications and give the best chance of postoperative success.
ABSTRACT
INTRODUCTION: Femtosecond laser-assisted cataract surgery (FLACS) has been considered a technological advance in modern cataract surgery. After years of experience, it has been observed that clinical outcomes had more complications than expected at the beginning. The aim of this study is to compare the benefits and disadvantages of the FLACS technique with conventional cataract surgery. METHOD: The PubMed and Web of Science platforms were used to search for scientific literature. RESULTS: The FLACS has currently improved the surgical technique in terms of the shorter ultrasound time used and the lower loss of endothelial cells. Likewise, the centration of capsulotomy and the correction of astigmatism with arcuate incisions have also been improved. As disadvantages, are the high cost of the laser, the intraoperative capsular complications, the induction of intraoperative myosis, and the learning curve of the technique. CONCLUSIONS: The FLACS technique is considered beneficial for specific cases, such as patients with scheduled premium surgery, or with low endothelial cell count. However, it is believed that given the technological cost it is not a cost effective technique for most standard cases in our daily clinical practice.
ABSTRACT
Phakic intraocular lenses (pIOL) are recommended when counselling refractive surgery candidates presenting with high ametropia or ocular surface and/or corneal conditions that contraindicate corneal refractive surgery. This review aims to present the state-of-the-art regarding pIOL models currently available in Europe, addressing their newer indications and recent design innovations. These include, in the case of posterior chamber pIOLs, the addition of a central hole to improve aqueous humour circulation, the availability of larger optical zones, and multifocal optics for the compensation of presbyopia. The review also highlights their good safety and efficacy results, as well as the role of patient education to ensure adequate outcomes in the medium-long term. The indications of pIOLs in special situations, as well as bi-lensectomy, a procedure that most pIOL patients may eventually require as they age and develop cataracts, are also addressed.
Subject(s)
Phakic Intraocular Lenses/trends , Prosthesis Design , Refractive Errors/rehabilitation , Europe , Humans , Lens Implantation, Intraocular/methods , Multifocal Intraocular Lenses , Patient Education as Topic , Phakic Intraocular Lenses/supply & distribution , Presbyopia/rehabilitation , SafetyABSTRACT
PURPOSE: To review the application of the PACK-CXL and to identify different treatment protocols according to the pathogens associated with keratitis. METHODS: A systematic review of 21 articles. The primary outcome was the healing of a corneal ulcer, defined as epithelization, blocking corneal melting. The secondary end-point was the recovery of visual acuity. RESULTS: We studied a total of 145 eyes. Infectious keratitis was associated with bacteria in 80 eyes (55.55%), fungus in 24 eyes (16.67%), and protozoa in 13 (8.97%). In 26 (18%), the microbiological culture was negative or not performed. The mean time of re-epithelization was 25.70±29.83days (1-180). A total of 27 patients needed corneal transplantation. The overall probability of blocking corneal melting was 84.13%. Three different protocols for each group of pathogens have been proposed. CONCLUSION: PACK-CXL still has a limit in its spread. In the future, we hope that each pathogen will be treated with the most efficient and least invasive protocols available.
