purpose : contrast sensitivity (cs) evaluation by sv–1000e chart in all spatial frequencies after micro incision cataract surgery (mics) and its comparison between two thin lenses after optical correction in natural and glare conditions methods : in this cross sectional study, 100 eyes having mics with dodick arc phacolaser system were evaluated. 50 thinoptx lenses and 50 acrismart lenses were ...

Introduction Effective strategies for sparse sampling of kt-space are important for fast dynamic imaging. Following observations in early landmark papers [1-3] the temporal sampling rate of each k-space view is often linked to the signal energy represented by that view in k-space for a certain class of images, in general considering only the spatial or spatiotemporal spectrum of the entire imag...

To determine which spatial frequencies are most effective for letter identification, and whether this is because letters are objectively more discriminable in these frequency bands or because can utilize the information more efficiently, we studied the 26 upper-case letters of English. Six two-octave wide filters were used to produce spatially filtered letters with 2D-mean frequencies ranging f...