OPTOMETRY AND BIOMEDICAL DATABASES
PubMed
Additional biomedical databases
BIOLOGY AND NEUROSCIENCE
PSYCHOLOGY AND COGNITIVE SCIENCE
ENGINEERING & TECHNOLOGY
GENERAL SCIENCE
In the database search results, click the 
button to check for an online copy of the article.
Or, search by article title in UC Library Search; if it is available online, there will be a link to access it.
Population / problem examples: astigmatism, myopia, cataracts, eye tracking, children, adults, aged
Intervention examples: corrective lens, surgery
Comparison interventions are optional
Outcome examples: improved vision
Embase database has a handy PICO search form.
Use "OR" when combining terms within the same PICO frame.
Use "AND" when combining terms from different PICO frames.
The "NOT" operator is a very blunt instrument; avoid it most of the time.