Assertion: snellen eye chart | /r/HasProperty | held at distance
Facets:
value: by the doctor
type: OTHER
Source sentences:
text: The Snellen Eye Chart was designed by Dutch ophthalmologist Herman Snellen in 1862 as a means to improve the subjective nature of vision testing, which was usually accomplished by having patients read a passage of text held their hands, or held at a distance by the doctor.