Fundamental studies of color vision from 1860 to 1960.

Evaluation of color blindness prevalence in male medical students of Mashhad medical school

Background: Color vision has an important role in daily activities and also learning special talents in different jobs, especially in the field of medicine. However, they are many people all over the world that has no insight into their color blindness and choose the study fields that are completely dependent on vision. Due to the importance of color vision in the field of medicine, we conducte...

The Young-(Helmholtz)-Maxwell Theory of Color Vision

In the second volume of the Handbuch der physiologischen Optik, published in 1860, Helmholtz sets out a three-receptor theory of color vision using coterminal response curves, and shows that this theory can unify most phenomena of color mixing known at the time. Maxwell had publicized the same theory five years earlier, but Helmholtz barely acknowledges this fact in the Handbuch. Some historian...

Photostimulation of Single Cones

As far as we know, no experimental study exists concerning the functional activity of single cones of the vertebrate retina. It has not been directly proved that the cones are photosensitive, although such an assumption has been generally accepted mainly because of morphological reasons. On the basis of psychophysical studies on vision, of light absorption measurements of the retina or extracts...

St. Peter's Hospital for Stone 1860-1960

بررسی کوررنگی اکتسابی درمیان شاغلین مواجهه با حلال های BTEX (مطالعه موردی پمپ بنزین های شهر تهران)

Background and aims: Color vision is one of the most important capabilities of the visual system. color vision impairment in many jobs, lead to reduced productivity, increased reaction time and workers' decision-making in confronting with of hazardous situations and as a result, it can lead to occupational accidents. This study was carried out to investigate occupational exposure to BTEX solven...