What glasses frames are suitable for high myopia?

There are many people with myopia in life. Most of them have mild or moderate myopia, and a small number of people will take it very seriously. Generally speaking, high myopia refers to a situation where the degree of myopia is greater than 600. Some people's myopia degree reaches 800 or 900 or even more than 1,000. This kind of myopia is very serious. Such people cannot live without myopia glasses. So how should people with high myopia choose frames?

What glasses frames are suitable for high myopia?

Choice of frame type

When choosing the type of glasses frames for high myopia, full-frame and half-frame frames are better than frameless frames, as the latter expose the edge thickness of the lens to outsiders. In addition, the frame is prone to deformation, which may cause changes in the center distance of the glasses and the axis of lens astigmatism, affecting the correction effect.

Shorten the lens-eye distance

The lens-eye distance refers to the distance between the back vertex of the lens and the front vertex of the cornea. Myopia correction lenses are concave lenses. If the lens-eye distance increases, its effective refractive power decreases (the higher the myopia, the greater the decrease), and the corrected vision also decreases. Therefore, the lens-eye distance of high myopia glasses should be minimized, and this should be taken into consideration when choosing frame styles and adjusting frames.

The geometric center distance of the frame is close to the pupil distance of the glasses

Since the geometric center distance of most frames is larger than the pupil distance of the human eye, in many cases the temporal edge of the lens is significantly thicker than the nasal edge, and the temporal edge of the lens is precisely the place that is most easily observed by outsiders.

The thickness of myopia lenses is mainly reflected in the horizontal direction of the frame glasses, so it is necessary to choose a frame whose geometric center distance is close to the pupil distance of the glasses. This can bring the nasal and temporal edges of the lens closer together, effectively reducing the thickness of the temporal edge of the lens and improving the appearance.

Choose a frame with a relatively small horizontal diameter

Myopia lenses are concave lenses that are thin in the center and thick at the periphery. The farther away from the center, the thicker the lens. For a horizontally oval frame, the smaller the horizontal diameter of the frame, the thinner the edge of the lens after cutting.

(1) Choose smaller frames: Large frames not only appear thick around the lenses, but are also heavier overall. If you want the periphery to appear less thick, try to choose frames made of non-metallic materials, such as wide-legged plate frames, which will be covered by the temples and less likely to appear thick.

(2) Choose lenses with a high refractive index: the higher the refractive index, the thinner the lens. The surface of high-refractive-index lenses reflects light more strongly, so it is best to use lenses with anti-reflective coating.

(3) Choose aspherical lenses: Aspherical lenses have small optical deformation and high image quality. For patients with high myopia, the higher the image quality, the better.

(4) Try not to wear frameless glasses: this is because they require unnecessary thickness and weight of the lenses, which makes them less aesthetically pleasing.

(5) Choose resin lenses: Resin lenses are light, coated resin lenses have better UV and radiation protection functions, and are not easy to break.

(6) Space lenses: This type of lens is of very good quality and is especially suitable for children and athletes.