Some recent developments in the area of multi-scale viewing have concerned the creation of such views from magnification factors as input. We present an algorithm in which magnification factors are used directly to control the creation of a multiscale view in a 3D based distortion viewing. Our algorithm relies on the basic geometry of a perspective view volume, the properties of which provide a...

In the past, patients with uniocular cataracts who underwent cataract extraction were not able to tolerate aphakic spectacles due to 30% magnification of visual images thus giving rise to diplopia. The other alternative was to use contact lens which needed motivation. Some could not tolerate contact lens and its magnification of 5% to 7%. These failures eventually led to the idea of intraocular...

We measured linear cortical magnification factors in V1 with fMRI, and we measured visual acuity (Vernier and grating) in the same observers. The cortical representation of both Vernier and grating acuity thresholds in V1 was found to be roughly constant across all eccentricities. We also found a within-observer correlation between cortical magnification and Vernier acuity, further supporting c...

Ergonomic practice increases the productivity, quality, and longevity of the dermatologic surgeon. When used properly, magnification devices can be ergonomic and beneficial additions to the dermatologic surgeon's practice. Herein, we review the available magnification options for the dermatologic surgeon and evaluate the options based on cost, design, and functional advantages and disadvantages...

Background: The use of magnification devices is widely recommended in surgical disciplines, but a validation of the respective optical aids, i.e., medical loupe systems, is lacking. The aim of this study was to objectively assess different medical loupe systems, including their declared magnification. Methods: Six Galilean binocular loupes (Zeiss 2.5×, SurgiTel 2.5×, Merident DCI 2.5×, Orascopt...

the performance of dual-layer multiple tuned mass dampers (dl-mtmd) with uniformly distributed natural frequencies is investigated. the dl-mtmd consists of one large tuned mass damper (l-tmd) and an arbitrary number of small tuned mass dampers (s-tmd). the primary structure is represented as a single degree-of-freedom system which corresponds to a specific vibration mode to be controlled in a r...

Weak gravitational lensing by large scale structure affects the number counts of faint galaxies through the “magnification bias” and thus affects the measurement of the angular two-point correlation function ω(θ). At faint magnitudes the clustering amplitude will decrease differently with limiting magnitude than expected from Limber’s equation. The amplitude will hit a minimum and then rise wit...