RESUMEN
PURPOSE: Post-operative corneal astigmatism following cataract surgery can leave the patient with visual impairment. Correcting it at the time of surgery with a toric intraocular lens (TIOL) can give patients a better final visual outcome. The purpose was to determine the prevalence of corneal astigmatism in a cataract population and assess the demand for TIOL. METHODS: Keratometric data was collected and analyzed for all patients who attended for routine cataract surgery under the care of a single surgeon based in Altnagelvin Area Hospital, Northern Ireland (NI). All patients were included between January 2008 and December 2014. Data was collected retrospectively for this observational study. RESULTS: There were 2080 consecutive eyes of 1788 patients. The mean corneal astigmatism was 1.09 ± 0.83. Corneal astigmatism was 1.50D or less in 1621 eyes (78%). It was more than 2.00 D in 242 eyes (11.6%), more than 2.50 D in 127 eyes (6.1%), more than 3.00D in 68 eyes (3.27%) and more than 3.50 D in 45 eyes (2.16%). CONCLUSION: For routine cataract surgery, 41.3% of eyes had more than 1.00 D of corneal astigmatism and 11.6% had more and 2.00D. Females had more astigmatism than males. This shows the potential demand for the TIOL in this population.
Asunto(s)
Astigmatismo/epidemiología , Catarata/epidemiología , Adolescente , Adulto , Anciano , Anciano de 80 o más Años , Astigmatismo/cirugía , Extracción de Catarata , Comorbilidad , Femenino , Humanos , Lentes Intraoculares/provisión & distribución , Masculino , Persona de Mediana Edad , Irlanda del Norte/epidemiología , Estudios Retrospectivos , Medicina Estatal/estadística & datos numéricos , Agudeza Visual , Adulto JovenRESUMEN
No disponible
Asunto(s)
Femenino , Humanos , Masculino , Extracción de Catarata/historia , Extracción de Catarata/métodos , Lentes Intraoculares/efectos adversos , Lentes Intraoculares/historia , Historia Medieval , Extracción de Catarata/clasificación , Extracción de Catarata/instrumentación , Lentes Intraoculares/economía , Lentes Intraoculares/provisión & distribuciónRESUMEN
We present an overview of currently available toric intraocular lenses (IOLs) and multifocal toric IOLs. Relevant patient selection criteria, IOL calculation issues, and surgical techniques for IOL implantation are discussed. Clinical outcomes including uncorrected visual acuity, residual refractive astigmatism, and spectacle independency, which have been reported for both toric IOLs and multifocal toric IOLs, are reviewed. The incidence of misalignment, the most important complication of toric IOLs, is determined. Finally, future developments in the field of toric IOLs are discussed.
Asunto(s)
Astigmatismo/cirugía , Implantación de Lentes Intraoculares/métodos , Lentes Intraoculares/provisión & distribución , Óptica y Fotónica/métodos , Selección de Paciente , Facoemulsificación/métodos , Astigmatismo/fisiopatología , Humanos , Complicaciones Intraoperatorias , Lentes Intraoculares/tendencias , Complicaciones Posoperatorias , Refracción Ocular/fisiología , Resultado del Tratamiento , Agudeza Visual/fisiologíaRESUMEN
PURPOSE: To analyze and quantify the pattern of corneal astigmatism in patients awaiting cataract surgery and to establish the demand for toric intraocular lenses (IOLs) in a hospital unit. SETTING: Singleton Hospital Abertawe Bro Morgannwg University NHS Trust, Swansea, United Kingdom. DESIGN: Cross-sectional study. METHODS: Keratometric measurements of all patients attending the preassessment clinic over a 4-month period were prospectively collected and analyzed. RESULTS: The study comprised 1230 eyes of 746 patients with a mean age of 75.54 years ± 0.71 (SD). The corneal astigmatism was 0.50 diopter (D) or less in 301 eyes (24.47%), 1.50 D or less in 978 eyes (79.50%), more than 2.50 D in 57 eyes (4.61%), and 3.00 D or more in 24 eyes (1.93%). CONCLUSIONS: Of patients attending for routine cataract surgery at a single center, 497 (40.41%) had more than 1.00 D of astigmatism. The results can help hospitals analyze the demand for and cost of using toric IOLs in patients with corneal astigmatism. FINANCIAL DISCLOSURE: Neither author has a financial or proprietary interest in any material or method mentioned.
Asunto(s)
Astigmatismo/epidemiología , Extracción de Catarata , Catarata/epidemiología , Hospitales de Enseñanza/estadística & datos numéricos , Adulto , Distribución por Edad , Anciano , Anciano de 80 o más Años , Biometría , Estudios Transversales , Femenino , Humanos , Lentes Intraoculares/economía , Lentes Intraoculares/provisión & distribución , Masculino , Persona de Mediana Edad , Prevalencia , Estudios Prospectivos , Refracción Ocular/fisiología , Reino Unido/epidemiología , Agudeza Visual/fisiologíaRESUMEN
Cataract prevalence increases with age. As the world's population ages, cataract-induced visual dysfunction and blindness is on the increase. This is a significant global problem. The challenges are to prevent or delay cataract formation, and treat that which does occur. Genetic and environmental factors contribute to cataract formation. However, reducing ocular exposure to UV-B radiation and stopping smoking are the only interventions that can reduce factors that affect the risk of cataract. The cure for cataract is surgery, but this is not equally available to all, and the surgery which is available does not produce equal outcomes. Readily available surgical services capable of delivering good vision rehabilitation must be acceptable and accessible to all in need, no matter what their circumstances. To establish and sustain these services requires comprehensive strategies that go beyond a narrow focus on surgical technique. There must be changes in government priorities, population education, and an integrated approach to surgical and management training. This approach must include supply of start-up capital equipment, establishment of surgical audit, resupply of consumables, and cost-recovery mechanisms. Considerable innovation is required. Nowhere is this more evident than in the pursuit of secure funding for ongoing services.