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).
AVERAGE WEIGHTS. OF PET BIRDS. Meet âBig Jake.â Heâs a Blue and Gold macaw that lives near Moundsville, WV. In 30 years of avian practice, Jake holds the record for being the heaviest pet. bird Iâve ever seen. The normal weight range for a Blue and Gold macaw is 900â. 1100g. Jakeâs last weighâin was 2415g!