In order to move light forward in the eye so that it focuses properly on the retina, lenses for farsightedness are convex. This means the lens curves outward, and the prescription is expressed in positive numbers. For example, a lens for minor hyperopia might be written as +0.50, whereas more extreme hyperopia might be +6.00. You may also consider high-index aspheric lenses, which are thinner and lighter than traditional lenses for farsightedness, and reduce the “bug-eyed” look that can sometimes be caused by higher prescriptions.