The way we take to correct the vision is often not as right as we think, so we should have a good knowledge of the situations of our eyes and the methods to correct the vision. Here I will show some notes from the professional experts to attract your attention for the optometry.
Myopia: the right method requires people to minimize the refraction, and wear the appropriate glasses. In the cases where patients do not use regulation, use-5.000D to correct visual acuity 5.0, but when using the audition adjustment, use -4.500D to correct visual acuity 5.0, the general use of optical-4500D is better, so as to avoid over-correction and fatigue symptoms, especially for patients who have to keep working for a long time. Not all patients can bear the whole correction diopter when they try the high myopia glasses for the first time. Maybe it is appropriate to reduce the refractive error or adapt it for some time and then the degree increases.
Hyperopia: Generally speaking, the best method should be according to the highest degree and the best visual acuity in order to minimize over-regulation, and lift asthenopia symptoms. If children have hyperopia associated with esotropia symptoms, they must wear all corrective glasses.
Astigmatism eye: People with mild asymptomatic symptoms can choose to not wear the glasses. If visual acuity decreased and the material fatigue often happens, no matter the symptoms are bad or not, people should prepare for suitable glasses. If the patients have a high degree of astigmatism and axial deflection, they are not easy to accept all the diopter. It is appropriate to reduce the diopter. The general principles of astigmatism are wearing all corrective glasses. People with astigmatism eye must pay attention to axial adjustment. Often the differences of axis potentiometer 50 will affect the correction of visual acuity, which cannot relief the fatigue symptoms.
Anisometropia: Generally speaking, if the diopter difference of the two eyes does not exceed-4.00D, the above principles can be optical. But if it is more than-4.00D, that is the diplopia phenomenon, it may be appropriate to reduce the higher diopter of the eye according to the lower diopter of the other eye. Children should have all possible correction of anisometropia so as not to affect the normal development of visual function.
In addition, the older people do not pay attention to their glasses they are wearing. They should go to the regular optical shops to find a qualified optometrist. According to the optometry prescription, select the suitable glasses. If the old people directly buy the glasses in the stores, they should be assisted by the professionals to ensure the endoscopic optical horizontal distance matches their PD.
If people do not feel well about their eyes, or cannot see very clearly, they should pay enough attention to the eyes and take right measures to protect their eyes.