Before prescription of spectacles, patients are usually required to undergo eye health examination, measurement of pupil distance and prescription, and checking of visual function of both eyes.
1. Eye health examination: Before the glasses are dispensed, the patient’s eyes should be examined to rule out other diseases causing vision loss such as keratitis, retinal detachment, etc. The patient’s eyes should also be examined to see if there are other diseases causing vision loss.
2. Measurement of pupil distance and prescription: the distance between the optical centers of both eyes is the pupil distance, and it is necessary to make sure that the optical centers of both eyes are consistent with the optical centers of the glasses to ensure that the glasses are comfortable to wear.
3. Check the visual function of both eyes: patients also need to assess the function of both eyes, which can ensure the coordination of the use of both eyes after wearing glasses.
It is recommended that patients with refractive errors visit a regular hospital to assess their condition and wear appropriate glasses to correct their vision.