for Teachers for Schools for Companies. Sulfur is a major mineral of the body that is part of certain amino acids and helps with many bodily processes. Learn what happens if you do not get enough of the mineral through your diet and what happens, if anything, when too much is ingested in this lesson.
Special-effect contacts (also called theatrical contact lenses, costume contacts and gothic contact lenses) are popular for Halloween and costume parties. These lenses typically are sold separately in individual glass vials and can range in price from $50 to more than $200 per lens.
Cost of Contact Lenses Compared With Eyeglasses. Some experts suggest the average cost of prescription eyeglasses is less than $300. If this is true, contact lenses cost more. Also, many people who wear eyeglasses do not purchase new glasses every year. But the cost of eyeglasses can increase significantly if you choose premium features, such as high index lenses, progressive lenses, anti-reflective coating and designer frames.