INTRODUCTION Aging has various effects on visual system. Vision deteriorate, contrast sensitivity decreases and ocular aberrations apparently make the optical quality worse across the years. PURPOSE To prospective evaluate ocular aberrations along the ages. METHODS Three hundred and fifteen patients were examined, 155 were male (39.36%) and 160 were female (60.63%). Ages ranged from 5 to 64...

The rising global demand for palm oil and its associated products has led to increased numbers of palm oil refineries with its attendant effluent discharge. Many researches have confirmed the ecological disruptive potentiality of Palm Oil Mill Effluent (POME), still further attention has to be directed at POME’s potential genotoxicity. The present study has made physico-chemical and genotoxicit...

Chromosomal instable colorectal cancer is marked by specific large chromosomal copy number aberrations. Recently, focal aberrations of 3 Mb or smaller have been identified as a common phenomenon in cancer. Inherent to their limited size, these aberrations harbour one or few genes. The aim of this study was to identify recurrent focal chromosomal aberrations and their candidate driver genes in a...

PURPOSE To evaluate the differences of wavefront aberrations under cycloplegic, scotopic and photopic conditions. METHODS A total of 174 eyes of 105 patients were measured using the wavefront sensor (WaveScan® 3.62) under different pupil conditions: cycloplegic 8.58 ± 0.54 mm (6.4 mm - 9.5 mm), scotopic 7.53 ± 0.69 mm (5.7 mm - 9.1 mm) and photopic 6.08 ± 1.14 mm (4.1 mm - 8.8 mm). The pupil ...

Book review Background Optical imaging systems, such as microscopes or telescopes, aim to provide as crisp and detailed a view as possible. Unfortunately, most devices do not achieve their full optical power due to aberrations that are introduced by the imaging system itself (e.g., the chromatic aberration introduced by a simple lens), in the object to be imaged (e.g., extensive scattering with...

background: cirrhinus mrigala, one of the important fish widely consumed in india, was used for karyological observations and to evaluate the toxic effect of butachlor, an extensively used herbicide in rice fields in terms of chromosomal aberration test. methods: fishes were collected from “national fish seed farm” jyotisar with mean body weight of 20-50g. the experimental fishes were kept in t...

purpose : to analyze the correlation of ocular higher-order aberrations (hoas) and mesopic pupil size (mps) with age and gender in myopic patients screened for refractive surgery methods : ocular hoas and mps were examined in 1,641 females eyes and 749 males eyes with myopia and also in two different age groups, under 30-year-old (1,675 eyes) and over 30-year-old (715 eyes), using the zywave ab...

and a high incidence of cells with chromosome aberrations. The generation times of the lines, estimated by pulse labeling with thymidine-3H, ranged from 19 to 25 hr. Most of the aberrations observed in culture continuously treated with VP-16 were of the chromatid type. On the basis of generation times, types of aberrations, and data obtained in a culture pulsed with thymidine-3H and continuousl...

Light microscopy of thick biological samples, such as tissues, is often limited by aberrations caused by refractive index variations within the sample itself. This problem is particularly severe for live imaging, a field of great current excitement due to the development of inherently fluorescent proteins. We describe a method of removing such aberrations computationally by mapping the refracti...