What Does a Low Vision Therapist Do?

Amblyopia training is amblyopia treatment. Amblyopia training refers to the visual acuity condition with the best corrected visual acuity lower than 0.8. It can be divided into amblyopia with obvious organic lesions and amblyopia with no obvious organic lesions.

Amblyopia training

Amblyopia training is amblyopia treatment. Amblyopia training refers to the visual acuity condition with the best corrected visual acuity lower than 0.8. It can be divided into amblyopia with obvious organic lesions and amblyopia with no obvious organic lesions.

Amblyopia can be classified as form-deprived amblyopia,

1. Ineffective: Includes vision loss, unchanged or improved;

2. Progress: Improved vision by two or more lines;

3. Basic recovery: visual acuity returned to 0.9, with binocular monocular function.

4. Healed: After three years of follow-up, vision remained normal.

1. For the newly diagnosed children, a comprehensive and detailed routine ophthalmological examination should be performed, including vision, anterior segment and fundus examination, to exclude organic lesions to prevent misdiagnosis and missed diagnosis.

2. Routinely give 1% atropine ophthalmic dilated optometry and wear appropriate corrective glasses. For monocular amblyopia, strictly cover the healthy eyes. The key to amblyopia treatment is to wear appropriate corrective glasses, strictly cover, and cover healthy eyes. Children are generally difficult to accept, especially in children who have just started treatment. Covering healthy eyes affects their normal study and life. Smaller children cry and refuse to cover. Large children will not be covered because of their appearance. Under the supervision of a person, the blindfold is secretly removed and the treatment effect is affected. Patients and parents should be patient to explain the importance of covering for the treatment of amblyopia. It should be explained according to the child's preferences and understanding. Tell them that if their vision cannot be restored, they will not be able to be drivers, artists, designers, etc. in the future, and let them know about amblyopia. The importance of being able to actively cooperate with treatment.

3. Make amblyopia interested in treatment. The hospital should create a comfortable and excellent training environment for the children, and at the same time give the children a space to play, play, and read books to enrich the lives of the children without feeling Dull and boring, and tired of treatment, play children's favorite fairy tales and nursery rhymes in the training room to increase children's fun. For the newly diagnosed children who are afraid of treatment, they can take them to the training room to eliminate their fear and feel happy here to receive treatment.

4. Let parents understand the cause of amblyopia, treatment methods, how to prevent recurrence and the harm of amblyopia to children, allow parents to enter the child's training environment and leisure activity environment, understand the children's training status and life, and let newly diagnosed children The family members talked with the family members of the children who had been trained to exchange views. Patient-to-patient communication is more credible than doctor-to-patient communication, increasing their confidence in treatment.

5. Regularly perform vision and eye examinations for children with amblyopia to understand the vision growth of the children, and adjust the covering and treatment in time to improve the efficacy.

6. For children who cannot receive collective comprehensive training, family-type training, regular follow-up visits, correct guidance can be given, and children and parents must be supervised by telephone on the one hand, on the one hand, to increase communication between doctors and patients, and to increase trust And more importantly, help your child return to normal vision early.

Amblyopia can be seen as a kind of "atrophy" of vision or "sleeping" of vision cells. The function of amblyopia is to use the color scale to wake up "sleeping" vision cells and indirectly increase vision or use icons to exercise "atrophy" vision and directly Vision. It can be seen that the principle of amblyopia instruments can be summarized into three categories:

1. Icon function exercises "atrophic" vision

Such as drawing operations, needle insertion, beading, jacks, level fine vision training, contrast sensitivity training and other functions. Among them, the level of fine vision training has the greatest effect of increasing vision, because it can adjust the threshold visual target of 0.1 to 1.5 according to visual acuity (the threshold visual target is the "E visual target" that children can just see, but has a certain degree of difficulty. Exercise has the greatest effect), so the effect of increasing vision is the best. Other icon-based vision enhancement functions, because they cannot be classified and quantified according to visual acuity, the effect is limited when treating severe amblyopia.

2. The color light function wake up visual cells such as light brushes, red flashes, posterior black spot light, visual physiological grid light, etc. can selectively excite cone cells or central cells to increase indirectly. Among them, light brushes have the best enhancement effect, because light brushes have three types of enhancement effects:

(1) Excited cone cells can be selected to turn eccentric fixation into center fixation (so the light brush is called eccentric fixation device abroad);

(2) The clear light brush when watching can exercise central vision;

(3) Rotating light brush can excite the central cells of the vision and eliminate the inhibition of the brain. The red flash can increase the sensitivity of cone cells, visual physiology (grid map), can stimulate the central cells of the optics, and eliminate brain inhibition; the effect of the two is relatively single, not as strong as light brush. Later images can protect the macula, inhibit peripheral rod cells (including eccentric fixation points), and have a strong effect of correcting eccentric fixation. It is the best eccentric fixation function.

3. Establish and restore stereo vision

Through amblyopia training, we can train three levels of binocular and single vision (simultaneous vision, fusion vision, and stereo vision) to establish and restore stereo vision. ^[2]

1. Healing: Visual acuity remains normal 1.0, and there is no decline after three years of follow-up;

2 Basic cure: vision 0.9;

3. Progress: Improved vision by two lines or more;

4. Invalid: Vision fades, does not change, or improves by only one line.