Methods and systems are described for determining eye position andor for determining eye movement based on glints. The system includes an imaging system and a table system having a tabletop in support of the subject from the floor. Since impurities are removed from a p type ion implantation region for a photodiode when an inner wall oxide layer is etched to form the air gap, the p type ion implantation region has a uniform doping profile, thereby suppressing the diffusion of electrons towards the surface and achieving an image having a high quality. The pin articulates the moving knuckle to the fixed knuckle. The compounds are useful for preventing or treating various disorders, including cardiovascular, and diabetes associated disorders.