At a younger age, muscular-motor sensations develop, visual and tactile control over the performance of movements improves. Improved coordination between visual sensations and the performance of movements. The child needs to be taught to trace movement in space. A peculiarity of perception of younger schoolchildren - depending on the degree of damage to visual functions - the integrity of perception is violated, a selectivity of perception is noted, which is limited to a narrow range of interests.
Development of physical qualities of young children is uneven, spasmodic. Knowledge of these features makes it possible to purposefully influence their development by means of physical education. At the age of 7-10 years, the child's heightened growth. At 11-13 years - a slowdown in growth and its stabilization, at 14-17 years - a decline in the level achieved.
For the treatment of myopia, the ophthalmologist William Bates offers the following exercises, which he developed after acquaintance with the technique of improving the vigilance of the Indians. He determined that the phenomenal vigilance of Indians is not a genetic feature, but is developed in early childhood through exercise. Here are some of them.
The head is fixed so that only the eyes can move. In his outstretched hand is a pencil. On a wide amplitude, it repeatedly moves to the right, to the left, downwards. We must closely follow his eyes.
According to the theory of William Bates, one of the causes of astigmatism is the uneven tension of the eye-eyes. With astigmatism, straight lines look crooked. Astigmatism is often accompanied by hyperopia or nearsightedness. Since the perception of the form of letters on the check table is violated, the patient quite often calls them incorrectly. With astigmatism, people often suffer from headaches and have difficulty reading.
With astigmatism, the following exercise will be helpful.
Diagnosis of myopia is not difficult and it is possible to judge it first of all from a reduced visual acuity into the distance. At the same time, there are no visible morphological changes (opacifications) in the cornea, in the anterior chamber, or in the pupil (lens, vitreous). For diagnostics, it is important that along with a decrease in vision in the distance there is a good visual acuity on small objects 4-20 inches from the eye.
The receptor role of rods and cones.
The retina of some nocturnal animals contains only sticks, and in the retina of animals active in the daytime, cones are mainly contained. Hence the conclusion that the rods are adapted to activity at dusk or in total darkness, and cones to activity in bright light. Thanks to the cones, color vision is realized. For example, in cats, the retina contains only sticks, and although they can see well at dusk, they see everything in black and white. Birds have cones and color vision.
These exercises can be performed both at home and in the open air. Prepare a place for employment: lay a rug, put a colored object (preferably green or blue), which you will look at, performing separate exercises. This can be a ball, a vase, a cup and other items that are clearly visible without glasses. Calculate the pulse, turn on the music, take the volleyball and start.
For the most part of its structural elements, with the exception of the round shape, the eye is similar to an analog camera, and the eyelid corresponds to a bolt in it. The eye has an adjustable iris. It's opens and closes automatically, depending on the amount of incident light: this property is possessed by many modern cameras. In the eye there is also the lens: it consists of modified transparent epithelial cells, and therefore it is more elastic than the glass lens of the camera.