1 Frequently, too much LDL is the result of a diet rich in saturated fats (usually from animal foods such as beef, butter, lard, and whole-milk dairy products) and trans fats (found in processed and fast foods).
Although most bifocals and trifocals have visible lines at the border of lens segments, there is a blended round-seg bifocal that has a less noticeable near segment than its regular round-seg cousin. The near seg is blended into the distance portion of the lens so that it is virtually invisible.
monofocal intraocular lens. An intraocular lens inserted by the ophthalmologist during cataract surgery that allows the wearer to see clearly at a single distance (close to the eye, far from it, or in intermediate focal points). Monofocal lenses were the only lenses used in the first few decades of cataract surgery.