Letters.Crossed eyes crossed eyes n. See esotropia. "Faces of perception" (SN: 7/7/01, p. 10) states, "Early visual input to the right brain, which arrives via the left eye, proves vital...." Then, the story presents findings based on people born with left-eye cataracts that were later removed. Unfortunately, the signals from the eyes are mixed almost immediately behind the eyes in the optic chiasma optic chiasma n. A structure in the brain formed by the partial intersection or crossing of the optic nerve fibers on the underside of the hypothalamus. Also called optic chiasm. Noun 1. . Nasal fibers representing the temporal view of each eye cross to the other side and continue on. In other words Adv. 1. in other words - otherwise stated; "in other words, we are broke" put differently , the right side of the brain gets the left field of both eyes, the left side of the brain gets the right field of both eyes. (Central, or macular macular adjective Related to 1. A macule 2. The macula , vision is combined.) To miss such a basic point throws off any conclusions. Mark Hertzberg Lawrence, N.Y. For adults, this description of the eyes' visual fields is correct. However, Richard Le Grand of McMaster University McMaster University, at Hamilton, Ont., Canada; nondenominational; founded 1887. It has faculties of humanities, science, social sciences, business, engineering, and health sciences, as well as a school of graduate studies and a divinity college. in Hamilton, Ontario, says that babies see mainly in their temporal visual fields. Infants with right-eye cataracts thus receive visual input mostly from the left eye's temporal visual field, which is transmitted to the right hemisphere, and vice versa VICE VERSA. On the contrary; on opposite sides. for infants with left-eye cataracts. Le Grand adds that adults born with left-eye cataracts that deprived them of right-hemisphere visual input as infants experience difficulty in seeing faces as unified entities. Adults born with right-eye cataracts do fine at recognizing facial configurations. --B. Bower Quick cure I am grateful to SCIENCE NEWS for having achieved with your words what no doctor has managed in the past 20 years: cured my diabetes ("Thinking blurs when blood sugar strays," SN: 7/21/01, p. 47). I now find that my average blood sugar falls safely within the range 80 to 240 milligrams per deciliter deciliter /dec·i·li·ter/ (dL) (des´i-le?ter) one tenth (10minus;1) of a liter; 100 milliliters. Deciliter (dL) 100 cubic centimeters (cc). Mentioned in: Hypercholesterolemia cited in the article as normal. On the strength of this good news, I'm going out for a hot fudge Hot Fudge, a.k.a. The Hot Fudge Show, was an American children's television series that aired in syndication from 1976 to 1980. The series was produced in Detroit at WXYZ-TV. sundae. I'll be looking forward to a future article on blood cholesterol. Nicholas S. Thompson New Braintree, Mass. Our article's statement that normal blood sugar falls between 80 and 240 milligrams of glucose per deciliter of blood was not correct. That's the range in which the brain seems to function normally, according to the researchers whose work the article discussed. They used this range to design their study. Normal blood sugar readings are generally considered to fall between 70 and 140 mg/dl, although readings up to 180 mg/dl are considered safe by some physicians. --N. Seppa |
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