Effect of visual spectrum on the dynamic pupillary in subjects with diabetes mellitus on poisoning on lead Pb

Abstract

The objective of this methodology is to characterize and differentiate the pupillary responses chromatic (PRC) generated by the pupillocromatographer (PPC), divided in three study groups, taking into account gender and age, from age 13 to 86 years. Control Group or Witness (CG): Subjects with normal vision to colours (NVC). This group was established to compare the "normal" parameters of the PRC. Lead-Exposed Group (LEG): Subjects exposed to lead Pb. This group were characterized the PRC of subjects with toxic ambliopy caused by prolonged exposure to lead Pb, with different times of exposure and various workplaces (offices, courtyards, etc.). Diabetic Group (DG): Subject with DM. This group was used to characterize some visually impaired due to the different levels of systemic degradation and the age of having the DM. Presenting varying degrees of progress in DMT2, from 6 months to more than 30 years. The pupillary responses with 26 different colors stimulus (400 nm to 650 nm).. When comparing with respect to the CG, it was noted that the LEG presents a PD (Pupillary diameter) higher across the spectrum, while the DG presents a minor dilation (in dark colors) and a similar contraction in the colors clear. Taking into consideration that the pupil is in a state of controlled expansion, respond with a PC (Percentages Contraction) according to the chromatic stimulus present, which is more or less depending on whether it is a light color or dark. The pupil got a bigger boost with the dark colors (minor contraction) that when stimulated with light colors. Compared with the CG, DG was characterized by having a smaller pupil across the spectrum of stimulation (greater contraction), while the LEG introduced a lower level of contraction. © 2009 Springer-Verlag.