How Can Parents Detect Amblyopia Early?
1. Preschool physical examination: the vast majority of children will recognize the visual acuity chart by simply teaching them eyesight.Children every year to the child's vision for a census screening, parents can go to the local eye center for a standard visual acuity chart.
If the visual acuity is lower than 0.8 for several times, take the child for further examination.
2. Early detection of abnormal signs: amblyopic children are often in addition to low vision performance, such as strabismus, objects tilting head, squinting or see things stick very close, but found this phenomenon, as soon as possible examination, diagnosis, because there are 1/2 of the strabismus amblyopia.
For infants and children who cannot cooperate with visual examination
3. A covering test can be done to roughly understand the binocular vision: the covering method has the traditional covering method (covering the main eye and forcing the amblyopic eye to gaze) and the inverted covering method (focusing on the amblyopic eye by the center of the cover and turning it into the center gaze).Covering can also be complete or partial, the former being covering for the whole day (which can be removed during sleep but covered up immediately after getting up), the latter being covering for several hours each day.Treatment of developmental amblyopia, at the beginning must be covered all day, later to maintain the consolidation of the vision obtained, can be implemented partial cover law.At present, scholars have advocated covering the main eye, forcing the amblyopic eye gaze.The occlusion method can remove the inhibitory effect on amblyopia caused by the stimulation of fixation eye.
4.Pay attention to the prevention of infectious eye diseases and systemic diseases, many infectious eye diseases are transmitted through direct contact, no matter what eye diseases, should be timely to the hospital to treat, some systemic diseases on the eye also has a great impact, such as tuberculosis, kidney disease, etc., therefore, we should pay attention to prevention and control, to avoid delay of the disease.
What manifestation does amblyopia have and how to diagnose?
1.The vast majority of patients through the dark glass to see the visual acuity chart, the vision is accordingly reduced a few lines, but some amblyopic eyes is not, in front of amblyopic eyes do not put the dark glass can see the same line of visual acuity chart, sometimes vision can even be slightly improved, in dim and weak light, amblyopic eyes of vision change is not big,Von Noorden and Burian found that when a density filter was placed in front of normal eyes, the visual acuity was reduced by 3 to 4 lines. However, when the same density filter was placed in front of strabismic amblyopia (occlusion of the main eye), the visual acuity was not affected or decreased only slightly. When the same density filter was placed in front of organic amblyopia (central retinal disorder, glaucoma, etc.), the visual acuity was decreased by 3 to 4 lines.Therefore, they thought that neutral density filter could distinguish the reversible amblyopia from the visual loss caused by organic disease. Later, scholars found that some reversible amblyopia was not caused by organic disease.
2.Crowding： the eye is one of the signs of a single font recognition ability than the same size but the ability to identify the lines of the font much higher, this phenomenon is called crowding, Hilton found that children with amblyopia vision of a single word may be normal or near normal, only in font inspection line, amblyopia could be detected,Therefore, the examination results using a single font can not reflect the true situation of amblyopia.
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