By 2020, 1.4 million Nigerians over age 40 will lose their sight, and the vast majority of the causes are either preventable or treatable, according to the Nigeria National Blindness and Visual Impairment Study Group.
In the September issue of Investigative Ophthalmology and Visual Science, the group shares the second half of the results of the study, which examined almost 15,000 Nigerians over 40 between 2005 and 2007. The goal of the study (Causes of Blindness and Visual Impairment in Nigeria: The Nigeria National Blindness and Visual Impairment Survey) was to help Nigeria create a plan for its participation in the World Health Organization's VISION 2020: The Right to Sight Initiative, which is working globally to eliminate preventable blindness. The first half of the study appeared in Investigative Ophthalmology earlier this year.
About 23 percent had some sort of visual impairment, and 4.2 percent were blind. Cataracts were the most common cause of blindness, with glaucoma second. Refractive errors (which cause nearsightedness, farsightedness and astigmatisms) were frequently the cause of less serious visual impairments. Other common treatable or preventable causes of visual impairment included complications from diabetes, trachoma (a bacterial infection of the eye) and the parasite onchocerciasis, which is transmitted to humans through the bite of a black fly and is prevalent in Africa.
"The high proportion of avoidable blindness … means that appropriate and accessible refraction and surgical services need to be provided," the report states. "If priority attention is not given, the number of blind and severely visually impaired adults in Nigeria will increase by greater than 40 percent over the next decade."
The study noted that groups that had less access to health care were particularly vulnerable to preventable visual impairment.
According to the study, "The difference in the prevalence of vision loss due to cataract between men and women, urban and rural areas, and levels of education in Nigeria almost certainly reflects access to services." The authors recommended vision care plans that target women, rural residents and the less educated.
ARVO is the largest eye and vision research organization in the world. Members include more than 12,500 eye and vision researchers from over 80 countries. The Association encourages and assists research, training, publication and dissemination of knowledge in vision and ophthalmology.
Jessie Williams | EurekAlert!
New study: How does Europe become a leading player for software and IT services?
03.04.2017 | Fraunhofer-Institut für System- und Innovationsforschung (ISI)
Reusable carbon nanotubes could be the water filter of the future, says RIT study
30.03.2017 | Rochester Institute of Technology
An international team of physicists has monitored the scattering behaviour of electrons in a non-conducting material in real-time. Their insights could be beneficial for radiotherapy.
We can refer to electrons in non-conducting materials as ‘sluggish’. Typically, they remain fixed in a location, deep inside an atomic composite. It is hence...
Two-dimensional magnetic structures are regarded as a promising material for new types of data storage, since the magnetic properties of individual molecular building blocks can be investigated and modified. For the first time, researchers have now produced a wafer-thin ferrimagnet, in which molecules with different magnetic centers arrange themselves on a gold surface to form a checkerboard pattern. Scientists at the Swiss Nanoscience Institute at the University of Basel and the Paul Scherrer Institute published their findings in the journal Nature Communications.
Ferrimagnets are composed of two centers which are magnetized at different strengths and point in opposing directions. Two-dimensional, quasi-flat ferrimagnets...
An Australian-Chinese research team has created the world's thinnest hologram, paving the way towards the integration of 3D holography into everyday...
In the race to produce a quantum computer, a number of projects are seeking a way to create quantum bits -- or qubits -- that are stable, meaning they are not much affected by changes in their environment. This normally needs highly nonlinear non-dissipative elements capable of functioning at very low temperatures.
In pursuit of this goal, researchers at EPFL's Laboratory of Photonics and Quantum Measurements LPQM (STI/SB), have investigated a nonlinear graphene-based...
Dental plaque and the viscous brown slime in drainpipes are two familiar examples of bacterial biofilms. Removing such bacterial depositions from surfaces is...
23.05.2017 | Event News
22.05.2017 | Event News
17.05.2017 | Event News
23.05.2017 | Physics and Astronomy
23.05.2017 | Life Sciences
23.05.2017 | Medical Engineering