Outcomes of manual small-incision cataract surgery using standard 22 dioptre intraocular lenses at Nkhoma Eye Hospital, Malawi.

International Ophthalmology
J C SherwinN H Metcalfe

Abstract

The aim of this study was to investigate the outcomes of sutureless, manual small-incision cataract surgery (SICS) in rural sub-Saharan Africa using standard intraocular lenses (IOLs). In order to assess the quality of surgery, we prospectively evaluated the visual outcomes of 1455 consecutive cataract operations performed in 2006 in patients ≥40 years at Nkhoma Eye Hospital, Malawi. All operations used standard 22-dioptre IOLs without pre-operative biometry. Outcomes were categorised according to the World Health Organization criteria, and causes of a poor outcome were recorded. Mean age of patients was 71.5 ± 9.5 years, and 53 % were female. Pre-operatively, 64 % of eyes had a visual acuity (VA) <6/60, and 41.3 % of eyes were blind (VA < 3/60). Without correction (uncorrected VA), nearly eighty percent (78.7 %) achieved a 'good' outcome (VA 6/6-6/18), 19.8 % were 'borderline' (VA < 6/18-6/60), and 1.5 % had a poor (VA < 6/60) outcome. With pinhole-correction, the proportion of good outcomes increased to 89.4 %, and poor outcomes decreased to 0.9 %. Poor outcomes were most commonly due to ocular co-morbidities (54.5 %) and refractive error (36.4 %). Older age and pre-operative blindness were strongly associated with borderline...Continue Reading

References

Oct 23, 1997·Ophthalmic Epidemiology·B ConnellM J Bond
Jan 23, 1998·American Journal of Ophthalmology·B Thylefors
Jul 24, 2001·The British Journal of Ophthalmology·S Lewallen, P Courtright
Apr 26, 2002·The British Journal of Ophthalmology·D YorstonA Foster
Aug 6, 2003·Journal of Cataract and Refractive Surgery·Claire DanielCatey Bunce
Mar 26, 2004·Canadian Journal of Ophthalmology. Journal Canadien D'ophtalmologie·Paul CourtrightUNKNOWN Chikwawa Survey Team
Dec 24, 2004·The British Journal of Ophthalmology·H LimburgM Myatt
Sep 20, 2005·The British Journal of Ophthalmology·T Y Wong
Dec 5, 2006·Ophthalmology·Wanjiku MathengeAllen Foster
Feb 3, 2007·The British Journal of Ophthalmology·Sarah PolackAllen Foster
Nov 7, 2008·European Journal of Ophthalmology·J C SherwinN H Metcalfe
Feb 13, 2009·The British Journal of Ophthalmology·R LindfieldA Foster
Oct 20, 2009·Der Ophthalmologe : Zeitschrift der Deutschen Ophthalmologischen Gesellschaft·S BriesenM Kollmann
Jul 21, 2010·Ophthalmic Epidemiology·Sebastian BriesenSusan Lewallen
Nov 9, 2010·Ophthalmology·Abdullahi U ImamUNKNOWN Nigeria National Blindness and Visual Impairment Study Group
Jul 26, 2011·Ophthalmic Epidemiology·William H DeanNick H Metcalfe
Sep 22, 2012·International Journal of Health Services : Planning, Administration, Evaluation·Tanya L ZakrisonCaries Muntaner

❮ Previous
Next ❯

Citations

Jul 25, 2018·The American Journal of Tropical Medicine and Hygiene·Anthony W Solomon For The Global Trachoma Mapping Project
Oct 20, 2019·Der Ophthalmologe : Zeitschrift der Deutschen Ophthalmologischen Gesellschaft·S IrleK Paust
Feb 20, 2021·The Lancet Global Health·Matthew J BurtonHannah B Faal

❮ Previous
Next ❯

Related Concepts

Trending Feeds

COVID-19

Coronaviruses encompass a large family of viruses that cause the common cold as well as more serious diseases, such as the ongoing outbreak of coronavirus disease 2019 (COVID-19; formally known as 2019-nCoV). Coronaviruses can spread from animals to humans; symptoms include fever, cough, shortness of breath, and breathing difficulties; in more severe cases, infection can lead to death. This feed covers recent research on COVID-19.

Blastomycosis

Blastomycosis fungal infections spread through inhaling Blastomyces dermatitidis spores. Discover the latest research on blastomycosis fungal infections here.

Nuclear Pore Complex in ALS/FTD

Alterations in nucleocytoplasmic transport, controlled by the nuclear pore complex, may be involved in the pathomechanism underlying multiple neurodegenerative diseases including Amyotrophic Lateral Sclerosis and Frontotemporal Dementia. Here is the latest research on the nuclear pore complex in ALS and FTD.

Applications of Molecular Barcoding

The concept of molecular barcoding is that each original DNA or RNA molecule is attached to a unique sequence barcode. Sequence reads having different barcodes represent different original molecules, while sequence reads having the same barcode are results of PCR duplication from one original molecule. Discover the latest research on molecular barcoding here.

Chronic Fatigue Syndrome

Chronic fatigue syndrome is a disease characterized by unexplained disabling fatigue; the pathology of which is incompletely understood. Discover the latest research on chronic fatigue syndrome here.

Evolution of Pluripotency

Pluripotency refers to the ability of a cell to develop into three primary germ cell layers of the embryo. This feed focuses on the mechanisms that underlie the evolution of pluripotency. Here is the latest research.

Position Effect Variegation

Position Effect Variagation occurs when a gene is inactivated due to its positioning near heterochromatic regions within a chromosome. Discover the latest research on Position Effect Variagation here.

STING Receptor Agonists

Stimulator of IFN genes (STING) are a group of transmembrane proteins that are involved in the induction of type I interferon that is important in the innate immune response. The stimulation of STING has been an active area of research in the treatment of cancer and infectious diseases. Here is the latest research on STING receptor agonists.

Microbicide

Microbicides are products that can be applied to vaginal or rectal mucosal surfaces with the goal of preventing, or at least significantly reducing, the transmission of sexually transmitted infections. Here is the latest research on microbicides.

Related Papers

Clinical & Experimental Optometry : Journal of the Australian Optometrical Association
Sebastian BriesenHelen Roberts
International Ophthalmology
Ifeoma Regina Ezegwui, Joseph Ajewole
Journal of Cataract and Refractive Surgery
J Luck
© 2021 Meta ULC. All rights reserved