1 You can also take courses in math, biology, and other sciences in high school to get ahead of the game.  Another option to enrolling in a veterinary technician program is to enter a U.S. university that offers a four-year bachelor's degree in veterinary technology. There are fifteen of these programs in the country.
Help with your Glasses Prescription The Sphere The sphere (Sph) specifies the strength of lens required to correct your focus - a plus sphere to correct long-sightedness (hyperopic - difficulty focusing on close objects) and a minus to correct short sightedness (myopia - difficulty focusing on distant objects.)
All three are components of the contact lens prescription. Power refers to the actual refractive correction in the lens. BC stands for base curve and specifies the shape of the lens (or shape of a specific area of a lens in more complex lens designs). DIA is short for diameter and denotes the overall size of the lens.