I am 500 degrees myopic and 200 degrees astigmatism. What frame lenses should I choose? Thank you

1.The punching frame can not be selected, which is easy to loosen and cause shaft position changes, which is not good for eyesight.

2.The thickness of the lens depends on the refractive index of the lens, the thinner the lens, and the above lenses are generally non-spherical, and the aspheric surface can be thinner.

3.If your astigmatism axis is around 90, the thickness of the lens is equivalent to 700 degrees, and the axis is about 180 or 10, which is equivalent to 500 degrees.

After doing this, the thickness depends on the size of your interpupillary distance and the size of the frame, the smaller the interpupillary distance, the thicker the lenses. The larger the frame, the thicker the lenses.

Aspherical lenses can be selected for the astigmatism axis of about 90, and aspherical lenses can be used for about 180 or 10, according to your own conditions, the higher the refractive index of the lens, the more expensive.

You're a very expert person, and you don't usually ask so clearly, let's see if mine will satisfy you.

1.The frames are chosen according to each person's different face shape or their favorite style, and as for which one is easier for the doctor to dispense, I don't think the average blender will be stumped on this, or I won't be able to eat it at dinner.

2.The thickness of the lens is related to the refractive index, the higher the refractive index, the thinner the thickness of the lens.

3.Astigmatism does not affect the thickness of the lens, and 500 for myopia and 200 for astigmatism is equivalent to 500 for myopia.

1 According to the current diopter, the advantage of perforated glasses is that the field of vision is wider and the weight is lighter, the limitation is that the thickness of the lens directly affects the beauty of the perforated glasses, the fixing methods of perforation are diverse, and the holes on the resin lens directly bear the stress of the core fixing screw of the pile head, so it is easy for ordinary resin lenses to collapse due to improper use! Therefore, PC lenses are preferred for perforated frames.

The view of the whole frame is significantly limited, but the protection of the lenses is the most comprehensive, and the surrounding lenses can block some of the thickness of the lenses.

Brushed frames are the most common on the market, with the most abundant types, a bit between the full frame of the perforated core, it is recommended to choose!

2 The direct thickness of the lens is determined by the refractive index, but the thickness attached to the frame is determined by a combination of factors, mainly: the size of the frame, the shape of the lens, and your interpupillary distance. For aesthetic reasons, it is recommended to choose a smaller frame with a higher diopter, as the sleek lens shape is thinner and more aesthetically pleasing than angular lenses.

3 The aspherical lens is designed with an optimized prism unit, the outer surface is closer to the plane, and the thickness of the spherical lens is 10% smaller than that of the spherical lens at the same refractive index and diopter, and the difference is smaller, and the vision is closer to the size of the real object.

4 The thickness of the lens is not derived from the astigmatism of myopia 1+1, and the astigmatism is affected by the axial position, which is manifested in the appearance of a thicker lens on one side of the lens.

5 High refractive index aspherical lenses are more beautiful and thinner, so it is recommended!

An ophthalmologist's job is to see eye diseases! I am an optometrist, and our optometry is more professional! Don't be superstitious about doctors, many ophthalmologists don't know about optometry at all.

Imported ones are not necessarily suitable, depending on the quality and reputation, as well as durability, it is recommended to compare carefully, I recommend domestic onesAlcon

The choice of lenses is promoted

As the core part of glasses, spectacle lenses determine the quality of a pair of glasses. When choosing lenses, you can choose from the refractive index, wear coefficient, spherical surface, and Abbe number.

Anti-fouling ability and other aspects to choose:

1.Refractive index: The refractive index of a lens is determined by the material used in the lens. Lens refractive index.

Yes74, With the same thickness at the center, the higher the refractive index, the thinner the thickness of the lens. For lenses of the same power of the same material, the higher the refractive index, the higher the **. It is also a 400-degree lens, and the thickness is nearly half thinner.

2.Abrasion coefficient: At present, the glass sheet has been withdrawn from the market. Early resin lenses.

The hardness of 2-3h, after hardening treatment reaches 4-5h, the hardness of the resin lens has exceeded 6-7h, which solves the problem of non-wear-resistant resin lens.

By the way, Duan Chi will talk about PC chips, light weight, high toughness, and not easy to break are the significant advantages of PC chips. However, the maturity of domestic PC film brands has yet to be confirmed, and it is recommended to choose the products of big brand lens manufacturers.

Aspherical lenses.

Usually refers to single-sided aspherical lenses): Its biggest advantage is that the edge of the field of vision is not distorted, and the edge of the lens is about 1 3 thinner than ordinary spherical lenses. Therefore, ** will be relatively higher, in addition to the market has also appeared double-sided aspherical lenses, the wearing field of vision appears clearer, the imaging effect is better, of course, ** is also more expensive.

Myopia lenses: 550 degrees of astigmatism in the left eye, 250 degrees; 650 degree astigmatism 200 in the right eye, how much resolution is needed for the left and right eyes with lenses, how to match glasses is very reasonable, hello, I am happy to serve you! If the astigmatism is reduced by half and added to the myopia degree, for example, one astigmatism and five myopia, then the astigmatism is reduced by half and added to the myopia degree, and the final prescription is 550 degrees, in fact, the problem of astigmatism has not been solved, but it has only deepened the myopia. The degree of astigmatism is like the degree of myopia, which is a calculation method that indicates the degree of astigmatism, but the degree of astigmatism is not the same thing as the degree of myopia, and astigmatism of 75 degrees and above needs to be corrected with astigmatism lenses. Thank you

Summary. Generally, it is best to use aspherical lenses, thinner ones are better, mainly because of high light transmittance, but the cost is still a little high.

Which lenses do I fit? It's that one of my eyes is 400 degrees plus 100 degrees of astigmatism, and the other eye is 200 degrees plus 100 degrees of astigmatism. Is renting such as let's suit me.

Generally, it is best to use aspherical lenses, thinner ones are better, mainly because of high light transmittance, but the cost is still a little high.

Aspherical or cylindrical lenses"Aspherical lenses are a type of aspheric or cylindrical lens. When taking pictures, lenses that include aspherical optics. The curvature of the surface is different from that of ordinary spherical lenses, and in order to achieve the thinness of the lens, it is necessary to change the curved edge of the lens.

The aspheric surface of myopia lenses is to change the curved surface of the lens to make the lens thinner, lighter and better imaging than ordinary spherical lenses. Sleepy Shenchang is very blind to solve the phenomenon of unclear images, so that it is more comfortable and clear to wear. Wang Pao.

Daily attention should be paid to developing good eye habits, less electronic products, sedan tomatoes and eye exercises on time to relieve eye fatigue, do not stay up late, can effectively alleviate the phenomenon of myopia closed code detection growth.

And which is better.

The choice of lenses for children's myopia, how to be myopic in their 40s**.

The refractive index of 1,6 is OK, and if you want to be thinner, you can do it.