Focometer
... that the Focometer was created in order to provide rural or economically disadvantaged populations the ability to measure spherical refractive errors?
... that the <b id="mwGGU"><a href="./Focometer" id="mwGGY" rel="mw:WikiLink" title="Focometer">Focometer</a></b> was created in order to provide rural or <a href="./Disadvantaged#Economically_disadvantaged" id="mwGGc" rel="mw:WikiLink" title="Disadvantaged">economically disadvantaged</a> populations the ability to measure spherical <a class="mw-redirect" href="./Refractive_Error" id="mwGGg" rel="mw:WikiLink" title="Refractive Error">refractive errors</a>?