Nowadays, various types of glasses on the market almost meet the needs of all friends. And now many people, whether it is nearsighted or not, whether it is decoration, eye protection or corrective vision, like to wear a pair of glasses.
Step / method
Before optometry, you must first check whether the eye is positive, whether there is eye tremor or congenital cataract and other eye diseases or other eye diseases. The wearer first tells the doctor or optometrist whether he has a history of wearing glasses, age, nature of work, and eye habits. Because the entire optometry process is the process of the photographer and the physician or optometrist. The eye is the most sensitive organ in the human body, and vision is the most complex system of the diopter. When the lens regulates tension or paralysis, the eye is used to regulate tension. Therefore, the optometry requires the accurate judgment of the physician or optometrist and the cooperation of the wearer.
To measure the distance
The pupil distance is the most important part of the glasses. Everyone knows that the most important thing when wearing glasses is to measure the pupil distance. Because wearing a pair of qualified glasses is closely related to the interpupillary distance, and selecting the frame is determined according to the interpupillary distance. According to years of clinical practice, the pupil distance should be measured first between the optometry, and then the frame is selected, which will make the eye match the pupil distance. If the frame shape does not adapt to the interpupillary distance, the wearer can appropriately move the interpupillary distance or move outward during the machining process and wear glasses that match the interpupillary distance. If the interpupillary distance is inaccurate, the optical center deviation will occur, causing dizziness, and even double vision or prisms, which will cause serious damage to the eyes.
The intrinsic quality of the lens is critical and must meet the standards of the national spectacle lens. When choosing a lens, it is best to choose high definition and transparency. If it exceeds +4.0D, you should consider wearing ultra-thin. Because it grows outdoor with the temperature of the sun, the color is deepened, which affects indoor reading and work. At present, the most popular one is the resin sheet, because the resin sheet is light and not easily broken, which is very suitable for teenagers who like sports. Of course, when choosing a film, you must choose high hardness, transparency, and no defects such as large, air bubbles, spiral, stripes, and ghosting. These are the key to wearing qualified glasses.
Choose glasses frame
The choice of the frame first looks at the appearance, the surface should be clear, there must be gloss, no rickets, such as scratches, bumps, corrosion and so on. Secondly, see if the weld is consistent, lightweight, strong, and not deformed. The selection should be based on the shape, color, age, and size of the wearer. In this way, the glasses that are worn are not only beautiful but also play a decorative role.
Pay attention to the phenomenon after wearing
The wearer who wears glasses for the first time is not used to it. It will be very normal after three or five days. It is common for adolescents to wear spectacles when wearing glasses. Especially when the anisometropia exceeds +3.0D, the two eyes are more difficult to fuse. When wearing corrective glasses, double vision appears, which is completely different from when not wearing glasses. Separation occurs between the eyeball and the optical complex. Ophthalmologists call it “visual disturbance” symptoms, so they will gradually disappear due to habits during the wearing process.