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An instrument to measure the power and cylindric axis of a spectacle lens.
[lens + G. metron, measure]
Farlex Partner Medical Dictionary © Farlex 2012
lensometer(len-zom′ĕt-ĕr) [ lens + -meter]
A device that measures the refractive power of a lens.
Medical Dictionary, © 2009 Farlex and Partners
An optical instrument for determining the vertex power, axis direction and optical centre of an ophthalmic lens (Fig. F8). The instrument can be either manual or automated. Syn. Lensometer (a tradename); vertexometer; Vertometer (a tradename). See lens measure; neutralization; back vertex power.
Millodot: Dictionary of Optometry and Visual Science, 7th edition. © 2009 Butterworth-Heinemann