Children and adults have obvious differences in optometry and prescription, and should choose glasses prescription according to the child’s age, refractive state, corrected visual acuity, and eye position and other characteristics.
I. Children’s hyperopia prescription
1, under six years of age simple mild hyperopia (physiological hyperopia) can not be prescription.
2, simple hyperopia not combined with amblyopia, can retain a certain adjustment without causing visual fatigue, at this time to the best corrected visual acuity for the degree.
3. Hyperopia combined with amblyopia, but no eye position abnormalities, can be appropriately undercorrected with lenses.
4. If there is hyperopia combined with internal strabismus, the first prescription must be fully corrected if there are adjustment factors. In the future, the prescription should be adjusted according to the eye position.
5.Ectropia combined with hyperopia, the best corrected visual acuity under the premise of undercorrection. If it is combined with amblyopia, it cannot be undercorrected, and amblyopia treatment should be ensured first.
6, hyperopia patients with eye fatigue, compensatory head position, even if the lighter degree should be corrected.
Children’s myopia prescription
1, myopia without eye position abnormalities and amblyopia, corrected visual acuity just reached 1.0-1.2 degrees more appropriate. The lenses can be worn selectively for -2.00D and -2.00D or less, and above -2.00D should be worn frequently.
2. In case of combined interstitial exotropia, the corrected visual acuity of 1.5 should be taken, which is the full correction. After surgery, the lenses should be given as normal.
3. For those who have a hidden strabismus or internal strabismus, the correction should be low and the lenses should be given according to the normal condition after surgery.
4, combined with amblyopia (the situation is rare), should be full correction, the height of the moment is difficult to accept, you can gradually increase the degree of the final prescription in place.
Children with astigmatism
1, regardless of the case, children with pathological astigmatism all full correction.
2, physiological astigmatism (0.50DC) can not be prescribed, but in one of the three cases of visual fatigue, low vision, television squint, should also be corrected.
3, mixed astigmatism as far as possible not to reduce the ortho-sphere lens prescription, may cause visual fatigue or cause myopia aggravation.
Fourth, children’s refractive error prescription
1, children’s tolerance is larger, try not to reduce the number of high refractive error to give the lens, should be the treatment of amblyopia as the first priority.
2, if there is no eye position abnormalities and amblyopia, try to reduce the difference between the two eyes, to the best corrected visual acuity for the degree.
3.For hyperopic refractive aberrations, combined with exotropia, the high number of eyes should be appropriately undercorrected so as not to reduce the best corrected visual acuity.
4. When hyperopic refractive aberration is combined with internal obliquity, in principle, full correction should be given.