acquired color deficiency in the tritan axis in parkinson’s disease has already been reported, manifesting itself as impaired performance in various visual tasks. however, its clinical significance has always been controversial. in this study we evaluated the performance of parkinson s disease patients in lanthony 15-desaturated clinical test and for the first time, compared it with the standar...

colors as a key element of emotional (sentimental) impacts and interaction with its surrounding, which is the most important visual factor, has had a great importance in the history of art and culture of iran for decades. this key element has shown its importance in several historical monuments and buildings. a large number of color theoreticians believe that colors affect the human beings’ spi...