Age-Related Macular Degeneration. Age-related macular degeneration (AMD) is gradual damage to the cells of the macula. This condition is most common in people over 60 years old. It causes blurry vision, especially in the center of the field of view. According to the Foundation Fighting Blindness, AMD is the leading cause of blindness among people over age 55 in the United States.
Dental Compomer Restoratives. Compomers are dental restorative materials containing glass ionomer cement. Some features of compomers include fluoride release, radiopaque, quick cure time and good handling characteristics i.e. no slumping, easy to shape/polish, no sticking. Compomers can be light-cure or self-cure.
1. 1  an optical device for measuring wavelengths, deviation of refracted rays, and angles between faces of a prism, especially an instrument (prism spectrometer) consisting of a slit through which light passes, a collimator, a prism that deviates the light, and a telescope through which the deviated light is viewed and examined. spectrometer.