THE researches described in the following paper were under-taken for the purpose of
determining the exact nature of the image received by the human eye. It was believed that a …

… Dioptric power expressed in the familiar three-component form … Dioptric power expressed
as the four-component dioptric … , and mathematical representation of dioptric power in terms of …

The peripheral dioptrics of the eye displays a considerable error of refraction caused primarily
by oblique-ray astigmatism. It was hypothesised that this refractive error might contribute …

… A brief review of methods for analysing and representing dioptric power is included but the
… of dioptric power is often not considered. Similarly, transformations of samples (of dioptric …

… of dioptric … of dioptric power to construct ellipsoids in three-dimensional space. The
eMipsoids are surfaces of constant probability density and contain a specific percentage of dioptric …

The article discusses the method of dioptric power with reference to estimations made by
research scholar H. Solomons. He defines a scalar quantity E, corresponding to the error, …

In the Treatise on Ophthalmic Lenses an endeavor is made, by means of graphic and analytic
methods, to guide the novice upon a path by which he may easily acquire a knowledge of …

title RIASSUNTO /title Questo articolo tratta di un particolare tipo di strumenti ottici, gli orologi
a rifrazione costruiti nel secolo XVI, collocandoli nel contesto delle conoscenze ottiche …

… This paper deals with dioptrics, one of Christiaan Huygens’ main interests and a field
where the interwovenness of manipulation and contemplation is well visible. I offer a short …

Every dioptric power of the usual form sphere/cylinder x axis may be represented by means
of a point in three‐dimensional space. Graphical representation of data in this manner is …