The present study evaluated the color vision of 44 patients with Duchenne muscular dystrophy (DMD) (mean age 14.8 years; SD 4.9) who were submitted to a battery of four different color tests: Cambridge Colour Test (CCT), Neitz Anomaloscope, Ishihara, and American Optical Hardy-Rand-Rittler (AO H-R-R). Patients were divided into two groups according to the region of deletion in the dystrophin ge...

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...

INTRODUCTION The Ishihara Test (IT) is arguably the most sensitive and commonly used color vision test within aviation and other occupational environments, but when no errors are allowed -20% of normal trichromats fail the test. The number of allowed errors varies in different occupations and sometimes within the same environment (such as aviation) in order to reflect the difficulties of the co...

A coincidence of Muller cell sheen dystrophy (MCSD) and congenital color vision deficiency in a 36 years old man is presented in this case report. Best corrected visual acuity (BCVA) was 1.0 in both eyes. He failed to read Ishihara color plates (0/13 in both eyes). Dilated fundus examination showed bilateral wrinkled glistening inner retinal surface at the posterior pole. In the macular images ...

It might be expected that normal trichromatic females would perform as well as normal trichromatic males of the same age when tested with standard clinical color-vision tests that use pseudoisochromatic vanishing designs on neutral gray backgrounds such as the Hardy-Rand-Rittler (HRR) pseudoisochromatic plates and the Neitz Test of Color Vision (NTCV). Here 2966 children aged 6-13 years from fo...

background: color blindness is an inherited disorder in which a person cannot distinguish colors from each other.  color blind drivers are involved in car accident twice as much as others. according to the importance of identifying causes of a lot of car accidents in iran and shortage of similar studies in this regards, this research was done to study the prevalence of color blindness in driver...

Teaching color vision testing can be challenging when all (or nearly all) of the students in the class have normal color vision. Colored filters or computer simulation can be used to simulate color vision deficiencies, but both have some drawbacks. As an alternative, we used a blue compact fluorescent lamp to illuminate various clinical color vision tests. The results from 20 students showed th...

The importance of including an adequate test for the discovery of deficiencies in color vision in any thorough medical examination of students has long been recognized; it is obviously desirable to detect at an early age those individuals who will be excluded from pursuing careers in occupations which require good color perception. For several years the Ishihara color vision test was used as pa...