To compare focometer and autorefractor in the measurement of refractive errors among students in an underserved community of sub-Saharan Africa. A total of 230 students were studied. Mean age of the ...
Astigmatism (uh-STIG-muh-tiz-um) is a type of refractive error where one or more of the eye’s surfaces are not smooth and/or ...
Please provide your email address to receive an email when new articles are posted on . Yu is a researcher in the department of biostatistics at Fudan University School of Public Health and the ...
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