Eye exam (eyeglasses only) - $60. Contact Lens eye exam - $90 (includes eyeglass exam) Pupil dilation and visual fields costs extra. The eye exam costs are more likely to vary from store to store as the optometrist is not directly employed by Costco.
Colorado, as many other states, has determined the age of majority to be 18 years of age or older. Individuals are treated as adults at the age of 18, with some exceptions, such as drinking alcoholic beverages (12-47-901), renting cars, and purchasing a hotel room. When an individual reaches the age of majority his or her parents are no longer liable for their child's actions.
Depends on the state. Each state has laws on the books that declares when a child is no longer considered to be a minor, and is a legal adult. The typical age is 18 years old. The state may have laws that allow for a minor to petition the court to be declared a legal adult, and if allowed by the court, would also have the same effect of reaching the legal age.