The extraocular muscles must turn each eye inward; the sphincter muscles must work to make the pupil smaller; and the ciliary muscles must contract to allow the lens to change to a shape that will produce a clearer image. Solution: Focus on a distant object to immediately feel your eyes relax.
Its upper body is blue, the belly is silver, and the fins are yellowish-gray. The common amberjack can reach five to six feet (1.5 to 1.8 m) in length and more than 100 pounds (45 kg) in weight. The average weight, however, is 10 to 15 pounds (4.5 to 6.8 kg).
For example, the 27-inch-long, three-quarter-inch head-light Volkl Quantum 10 Tour tips the scales at 11.5 ounces but has significantly lower swing weight, 313, than the 10-ounce Wilson Hyper Hammer 5.9 oversize, which is a half inch longer, and almost an inch head heavy, and has a swing weight of 338.