Glasses are a combination of lenses and frames, which are used to improve vision, protect eyes, or for decorative purposes. Glasses can correct a variety of vision problems, including nearsightedness, farsightedness, astigmatism, presbyopia, strabismus, or amblyopia.
Types of Glasses
Glasses are divided into various categories depending on their purpose.
The categories include myopia glasses, hyperopia glasses, reading glasses, astigmatism glasses, plain glasses, computer goggles, swimming goggles, night vision goggles, e-sports game goggles, e-sports goggles, goggles, sunglasses, 15 types of toy glasses, and sunglasses.
Lens Making
The lens is the core part of the glasses, and its production requires various steps. First, the material of the lens needs to be selected, usually glass or resin material. Then, the parameters of the lens to be made, such as the power and curvature, are calculated based on the prescription issued by the doctor.
Next, the lens material is cut into discs of appropriate size, and a grinder is used to process the lens into the required shape and power. Finally, the processed lenses are installed on the glasses frame to complete the production of glasses.
In modern society, more and more people are becoming myopic. To protect our eyes, many people choose to wear glasses. However, wearing glasses also requires proper attention.
If the glasses are uncomfortable, they will not only fail to protect the eyesight but can also deteriorate it. So what are the essential things to know about glasses? How much do you know?
1. Do not frequently take off and wear glasses as it causes frequent movement from the retina to the lens, which can lead to an increase in degree.
2. If the existing glasses do not meet the vision requirements, go to a regular institution for a vision examination in time, replace the appropriate lenses, and review regularly.
3. Avoid keeping glasses on direct sunlight or on a heating bag to prevent the frame from deforming and fading. Also, do not place the convex surface of the lens on the table as it can wear the mirror surface.
Choosing Your Glasses
When choosing glasses that suit you, you need to pay attention to the following points:
1. Determine the purpose of the glasses: Choose the appropriate type of glasses according to the intended use (myopia, hyperopia, presbyopia, etc.).
2. Determine the degree of the lens: Under the guidance of an ophthalmologist, you need to undergo an optometry check and choose a lens as per the doctor's prescription.
3.Determine the lens material: Choose the lens material according to your needs and budget. Common lens materials include glass, resin, etc.
4. Determine the lens type: Choose the lens type according to your own needs and budget, such as single vision, progressive, multi-focal, etc.
5.Choose the glasses frame that suits you: Choose the right glasses frame according to your face shape, personality, comfort, and other factors.
6. Pay attention to the quality of lenses and spectacle frames when purchasing: Choose from regular channels to ensure that the quality of lenses and spectacle frames meet the standards.
In short, the correct use and maintenance of glasses can effectively protect the eyes and improve the quality of life. If you have problems using glasses, it is recommended to consult a professional doctor or optometrist.
