Prevalence of corneal astigmatism in cataract surgery candidates at a public hospital in Brazil

Conclusion: Over 40% of the patients undergoing cataract surgery enrolled in this study had more than 1.0 D of corneal astigmatism and may benefit from the use of toric intraocular lenses. These data can be useful for planning to make this technology available fo r patients.RESUMO Objetivo: Avaliar a preval ência do astigmatismo corneano antes da cirurgia de catarata em pacientes brasileiros. Métodos: Este estudo transversal de base clínica foi realizado no Hospital Federal de Bonsucesso, Rio de Janeiro, Brasil. Os prontuários de pacientes submetidos à cirurgia de catarata durante um período de dois anos foram revisados retrospectivamente, e as medidas ceratométricas pré-operatórias foram coletadas e analisadas. Resultados: Um total de 1.707 olhos de 1045 pacientes foram incluídos. O astigmatismo corneano foi menor que 1,0 D em 971 olhos (56,9%), 1,0-1,99 D em 496 olhos (29,1%), 2,0-2 ,99 D em 157 olhos (9,2%) e mais de 3,0 D em 83 olhos (4,9%). A média do astigmatismo corneano foi de 0,92 ± (SD) 0,96 D (intervalo 0-10,25 D). Conclusão: Mais de 40% dos pacientes estudados submetidos à cirurgia de catarata incluídos neste estudo tinham mais de 1,0 D de astigmatismo corneano e podem se beneficiar do uso de lentes intraoculares tóricas. Esses dados podem ser úteis no planejar a disponibilização dessa tecnologia para os pacientes.
Source: Arquivos Brasileiros de Oftalmologia - Category: Opthalmology Source Type: research

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Abstract BACKGROUND: In 2019 the German Commission for the Prevention of Blindness (DKVB) held an eye camp in the Tanzanian town of Sumbawanga. For patients with mature cataracts and the ability to see light cateracts were treated by manual small incision cataract surgery (MSICS). For the first time in this camp the quality of the results of the cataract operations was measured. OBJECTIVE: The quality of the cataract operations is presented and the results were assessed in the context of the guidelines of the World Health Organization (WHO). METHODS: Those patients who had a cataract operation in th...
Source: Der Ophthalmologe - Category: Opthalmology Authors: Tags: Ophthalmologe Source Type: research
CONCLUSIONS Inconspicuous IOL malpositioning is one of the reasons responsible for decreased vision acuity after cataract surgery, which may not be easily identified by slit-lamp examination. High astigmatism and ocular higher-order aberrations derived from malpositioned IOL can be important clues.
Source: Optometry and Vision Science - Category: Opthalmology Tags: CASE REPORT Source Type: research
CONCLUSIONS: In this prospective study, WTW diameter had minimal effects on the SIA in uncomplicated small-incisional cataract surgery through a 2.2 mm temporal or superotemporal CCI with a single surgeon. Our findings suggest that corneal diameter does not play a clinically significant role in this population undergoing small-incisional cataract surgery. PMID: 31564344 [PubMed - in process]
Source: Canadian Journal of Ophthalmology - Category: Opthalmology Authors: Tags: Can J Ophthalmol Source Type: research
The prevalence of myopia is much higher than hyperopia. Hence, there are relatively few studies investigating phakic intraocular lens (pIOL) implantation for the correction of hyperopia. This review aimed to summarize the available relevant literature on the efficacy and safety of pIOL implantation for the correction of hyperopia and hyperopic astigmatism. At present, two types of pIOLs are used to correct hyperopia and hyperopic astigmatism: anterior chamber iris-fixated pIOLs and posterior chamber implantable collamer lenses.
Source: Journal of Cataract and Refractive Surgery - Category: Opthalmology Authors: Tags: Review/Update Source Type: research
We describe a simple modification to the preexisting protractor scale on the slitlamp to facilitate toricity measurement at each degree.
Source: Journal of Cataract and Refractive Surgery - Category: Opthalmology Authors: Tags: Correspondence Source Type: research
Abstract PURPOSE: To evaluate the potential benefit of a new version of an online toric intraocular lens calculator in eyes implanted with a bitoric intraocular lens. PATIENTS AND METHODS: Retrospective observational comparative study in patients that underwent cataract surgery with implantation of the bitoric intraocular lens AT TORBI 709M (Carl Zeiss Meditec AG, Jena, Germany). Visual and refractive outcomes were evaluated at 1 month after surgery. The selection of the toric intraocular lens power was performed with the software Z CALC 2.0 (Carl Zeiss Meditec AG). The absolute refractive prediction e...
Source: European Journal of Ophthalmology - Category: Opthalmology Authors: Tags: Eur J Ophthalmol Source Type: research
ConclusionsTo the best of our knowledge, this is the first report to describe corneal ectasia in a patient with keratoconus following phacoemulsification surgery. Cataract surgeons should provide extra caution to patients with keratoconus and take into consideration this rare but potentially sight-threatening complication.
Source: Journal of Medical Case Reports - Category: General Medicine Source Type: research
Conclusion Patients with stage 2 or higher ROP remain at significant risk for ophthalmological morbidity through 2 years of age. Infants with regression of subthreshold ROP who do not require treatment represent an underrecognized population at long-term ophthalmological risk. Identifier NCT01559571. [...] Thieme Medical Publishers 333 Seventh Avenue, New York, NY 10001, USA.Article in Thieme eJournals: Table of contents  |  Abstract  |  Full text
Source: American Journal of Perinatology - Category: Perinatology & Neonatology Authors: Tags: Original Article Source Type: research
Rationale: To report the visual status and results of phacoemulsification cataract surgery in a young patient with Alport syndrome associated with bilateral anterior lenticonus. The milestone of this report is the use of anterior segment optical coherence tomography (AS-OCT) to confirm the central protrusion of the anterior surface of the crystalline lens. Patient concerns: A 23-year-old young woman presented with severe progressive visual loss in both eyes, which started several years ago. Diagnoses: Refractive status was indicative of high myopia with astigmatism and vision was not improved with optimal correctio...
Source: Medicine - Category: Internal Medicine Tags: Research Article: Clinical Case Report Source Type: research
This 39-year-old patient has central keratoconus with more involvement in the left eye. Stability is relative in patients with keratoconus, and it is unclear whether her current complaints have been present since the initial ICL surgery 2 years prior or whether this represents progression of her corneal disease. Despite her current 20/30 UDVA, this patient is reporting blurry vision with diplopia. A rough estimate is that 1.0 D of ICL add power will correct about 0.7 D of refractive astigmatism at the corneal plane.
Source: Journal of Cataract and Refractive Surgery - Category: Opthalmology Authors: Tags: Consultation section: Refractive Source Type: research
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