Anat Rubin

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This paper demonstrates a multivariate approach to understanding the complicated relations of visual acuity to refractive state or ametropia. Other approaches, as previously used, included graphical representations of lines or profiles of iso-oxyopia (Peters, 1961). But one limitation of Peters' method is that cylinder axis was ignored. However, here the(More)
The refractive variation of a sample of 106 university students (63 females and 43 males) studying optometry was examined by means of autorefraction. Stereo-pair scatter plots in Euclidean three-dimensional h-space are used to illustrate the nature of the spread or distribution of data measurements found in particular subjects. A wide variety of different(More)
— A wideband 8.5 Gbps transmitter implemented using a 65 nm CMOS technology in V-band (50GHz – 75 GHz) is presented. A BPSK modulation scheme is used, realized by a double balanced Gilbert cell, followed by an output buffer and a matching network. Output power of 5.5 dBm – 7.2 dBm was achieved at carrier frequencies of 56GHz – 68 GHz. Limited by measurement(More)
An investigation was performed on seven subjects of varying ages in order to determine the influence of two different target types on autorefractor results. A single autorefractor capable of presenting two different targets was used. Multivariate statistical methods which only recently have become available in optometry are used to illustrate graphically(More)
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