Staphylococcus (S.) aureus is a common causative agent of bacterial endophthalmitis, a vision threatening complication of eye surgeries. The relative contribution of S. aureus virulence factors in the pathogenesis of endophthalmitis remains unclear. Here, we comprehensively analyzed the development of intraocular inflammation, vascular permeability, and the loss of retinal function in C57BL/6 m...

Purpose Visual impairments are frequent in Parkinson's disease (PD) and impact normal functioning in daily activities. Visual contrast sensitivity is a powerful nonmotor sign for discriminating PD patients from controls. However, it is usually assessed with static visual stimuli. Here we examined the interaction between perception and eye movements in static and dynamic contrast sensitivity tas...

The first physiological process influencing visual perception is the optics of the eye. The retinal image is affected by diffraction at the pupil and several kinds of optical imperfections. A model of the eye (Thibos & Bradley, 1999), which takes account of pupil aperture, chromatic aberration and wavefront aberrations, was used to determine wavelength-dependent point-spread functions, which ca...

Dynamic Brillouin gratings (DBGs), inscribed by comodulating two writing pump waves with a perfect Golomb code, are demonstrated and characterized experimentally. Compared with pseudo-random bit sequence (PRBS) modulation of the pump waves, the Golomb code provides lower off-peak reflectivity due to the unique properties of its cyclic autocorrelation function. Golomb-coded DBGs allow the long v...

The goal of this study is to detect the onset of alpha rhythm in the electroencephalography (EEG) signal after eye closure. We developed an algorithm that detects the alpha rhythm onset by analyzing the FFT of an EEG signal, obtained by means of a localized sensor in the occipital zone, developed with specific characteristics for alpha rhythm acquisition. The EEG signal of eight subjects was re...

Cell Surface O-Glycans Limit Staphylococcus aureus Adherence to Corneal 1 Epithelial Cells 2 Jessica Ricciuto, Susan R. Heimer, Michael S. Gilmore, Pablo Argüeso* 3 Schepens Eye Research Institute and the Department of Ophthalmology, Harvard Medical 4 School, Boston, MA, USA 5 Running Title: O-glycans limit S. aureus adherence 6 7 8 *Corresponding author. Mailing address: P. Argüeso, Ph.D., Sch...

This paper aims to develop a visual servo control of robotic manipulator for cherry tomato harvesting. In the manipulator, an RGB-depth camera was mounted end effector acquire poses target tomatoes in space. The eye-in-hand-based controller guides implement eye–hand coordination harvest tomatoes, which hybrid method (HVSC) with fuzzy dynamic parameters proposed by combining position-based (PBVS...

During Drosophila eye development, differentiation initiates in the posterior region of the eye disk and progresses anteriorly as a wave marked by the morphogenetic furrow (MF), which demarcates the boundary between anterior undifferentiated cells and posterior differentiated photoreceptors. However, the mechanism underlying the regulation of gene expression immediately before the onset of diff...

Using a micropolarographic system, we measured the responses of six human corneas to nine oxygen exposure conditions: to air (continuous open-eye) with no contact lens in place, and to eight interblink intervals (1, 2, 3, 4, 5, 6, 7, and 300 s durations) with an oxygen impermeable lens in place. The corneal oxygen uptake rates immediately following each of those conditions were direct indices o...