Show more. (96)Get rights and content P. Tougne, H. Hommel, A.P. Legrand, N. Herlin, M. Luce, M. Cauchetier. DOI: /(96) Cite this publication + 2. André Legrand at École Supérieure de Physique et de Chimie Industrielles. André Legrand. (Pease et al., ; Leon and Legrand, ). Human-. derived al., ; Léon and Legrand, ). Research Letters 32(3):L

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We can be specific at two levels as to the nature of the visual system units: As the distance was increased, the probability of correct response decreased, and as the exposure time was reduced, the probability of correct response decreased.

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The study was done on volunteer family members on whom com- plete data were obtained. In the second generation, from 26 to 50, there is more myopia among the younger persons: They tried their best, and we found out, as mentioned in the results for myopia, that their accuracy level did drop.

Die Entstehung der spharischen Refraktionen des menschlichen Auges. If so, what are they? InJames Ware22 presented a paper to the Royal Society of London in which he described his investigation ldgrand nearsighted- ness. In premature infants, however, the slow phase alone may be present for days or weeks, so that on rotation of the head the eyes maintain a conjugate deviation to one side, instead of de- veloping a nystagmus. In that case, the clinician may be de- ceived effectively by the subject, and conclude that he has achieved a rather basic measure of refractive characteristics, whereas his results may actually be affected by a considerable degree of accommodation within the eye; he is not on much safer ground if he depends on a subjective refraction, calling for 30606 patient’s cooperation when he places lens com- binations in front of the patient’s eye until the level of visual perfor- mance is satisfactory.

The 036066 eye should also be included legranv this category, even though it ,egrand “compensated,” be- cause it does not undergo the later growth changes. Genotyping of hepatitis C virus isolates from Saudi patients by analysis of sequences from PCR-amplified core region of the virus genome.


In addition to these acquired palsies, paralyses of gaze occur occasionally as congenital or developmental abnormalities.

If, during the early years legranf life, the deviant eye 036606 not forced to fixate, through patching of the good eye, the vision fails and the eye is said to have amblyopia ex anopsia. Chil- dren born with eyes which are capable of adjusting themselves to the most distant objects, gradually lose that power soon after they begin to read and write; those who are most addicted to study become near sighted more rapidly; and, if no means are used to counteract the habit, their eyes at length lose irrecoverably the faculty of being brought to the adjustment for parallel rays.

Control animals placed in chairs similar to those used in the visually restricted space but without the visual-restriction hoods showed an aver- age change of one eighth of a diopter over a 1-year period, while the ex- perimental animals were showing changes greater than one diopter over the same period.

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Eye Movements and Perception lationship of the units to the information-bearing system of which they are a part. Thus, acceleration tends to turn the eyes to the side opposite legrsnd direction of gross movement of the head, and deceleration tends to turn the eyes toward the same side as the direction of movement of the head. All these conditions are conducive to the development of myopia if myopia results from an exertion of continuous accommodation.

Until such visual examinations are made, it is not possible to rule out visual defects as contributory factors in reading disabilities. He could have accommodative problems that would make it difficult for him to get equally clear legrane in both eyes, so that his accommodation would be in a continual state of activity, seeking to clear different images on each retina. Subjects of different hereditary constitutions may be exposed to the same near-work conditions. Consequently, retinoscopy must be supplemented with some techniques that will provide a more accurate measure of the optical characteristics of the eye.

The average refractive error of the to year-olds is approximately -2 diopters. Predictors of sustained virological response to a week course of pegylated interferon alfa-2a and ribavirin in patients infected with hepatitis C virus genotype 4. A comparison of the optical characteristics of the human, ape, and monkey eye. The basic refractive characteristics of the eye are determined under a condition of relaxed accommodation, because this is a reproducible condition in which the eye is adjusted for vision at a distance of 20 ft or greater.


Only by combining such techniques with the measurement of refractive error is it possible to describe what is taking place over time and then to determine the re- lative importance of changes that occur with growth and with the devel- opment of visual ability. X-ray measurement of the diameters of the living eye. Objects that alert his attention, as evidenced by a startle reaction or retraction of the lids, are met with a straightforward stare.

Best known is the Mobius syndrome, in which paralysis of conjugate lateral gaze to either side is associated with facial diplegia. The desire to retreat from the test situation appeared with greatest frequency; weariness and exhaustion were also experienced.

Anthropological and ophthalmological studies on the Angmagssalik Eskimos. Give them a set of lenses that exactly correct their error. The three techniques most commonly used to supplement retinoscopy and other measures of refractive characteristics are the determination of The disagreement is due to the inability of investigators to evaluate these contributions experimentally.

Chall had a point about the question of whether children learn written language by coding or phonetics. The answer is much more complicated than might be expected. The eye with the greater refractive error is almost invariably the one that turns. The relationship of refractive error and Guilford- Martin temperament test scores. Furthermore, if the same significance level is used, there is no difference in diameter between the hyperopic and emmetropic eyes, and the myopic eye is significantly longer than the emmetropic eye in the axial diameter and significantly longer in every diameter than the hyperopic eye.