a method based on machine vision system (mvs) is hereby employed to evaluate grape drying through an assessment of the fruit’s shrinkage and quality during the dehydration. experimental data as well as captured images are obtained at an air velocity of 1.4 m s-1 and different drying temperatures (50, 60, 70ºc). the results indicated the effect of temperature on the moisture content, shrinkage a...

purpose: the association between deafness and ocular abnormalities is well established however the nature and prevalence of these problems are diverse across the globe. methods: a team of optometrists and social worker visited one hundred fifty eight deaf boy students at their schools and those who needed more detailed evaluation were referred to the farabi eye hospital's strabismus clinic...

Background and aims: Color blindness is a disease that remains undiagnosed in some cases. Thediagnosis of the disease during schooling is necessary to take the required measures for the future lifeof adolescents. Therefore, the aim of this study was to determine the prevalence of color blindnessamong the students of secondary schools in Shahrekord.Methods: In this descri...

Purpose. To compare contrast sensitivity, acquired color vision deficiency, and reading ability in patients with glaucoma at different stages of the disease and to establish correlations between visual field parameters and visual function scores. Methods. This prospective cross-sectional study included 121 glaucoma patients. Subjects with a diagnosis of chronic open angle glaucoma were recruite...

PURPOSE To develop and assess new color vision tests to be used in evaluating faulty color recognition. METHODS We developed new color vision tests to evaluate faulty color recognition. The two types of color vision tests, designed to assess faulty color recognition in color vision deficiencies, are based on principles that are different from those of the conventional color vision tests. In t...

Day vision and night vision are two separate modes of visual perception and the visual system shifts from one mode to the other based on ambient light levels. Each mode is primarily mediated by one of two photoreceptor classes in the retina, i.e., cones and rods. In day vision, visual perception is primarily cone-mediated and perceptions are chromatic. In other words, color vision is present in...