If distinguished according to the degree, below 300 degrees is low myopia, 300-600 degrees is moderate myopia, and more than 600 degrees is high myopia. 600 degrees of myopia is basically a high degree of myopia, which has a relatively large impact on life. Generally, only objects at a distance of about one meter can be seen. So, if you want to switch from frame glasses to contact lenses, should you buy 600 degrees?
At present, contact lenses are sold in physical stores, online stores, and beauty stores. It can be said that they are easy to buy, and because they are easier to wear than hard lenses, many people choose to buy them by themselves. But in fact, contact lenses are classified as medical devices, which are strictly regulated and should be equipped and used under the guidance of professionals. Especially in patients with high myopia, lesions may have occurred in the fundus, and it is necessary to determine whether it is suitable to wear contact lenses.
In the standard opticianship process, you need to undergo a more detailed inspection to determine whether you have contact lens contraindications. In the examination, in order to ensure that the optician can obtain the best correction effect, the corneal curvature and other eye data are also measured. In general, professional optometrists should provide optician suggestions according to actual power and eye requirements, which is more suitable for personalized needs.
So, if you already know the accuracy of your eyes, such as 600 degrees, how do you choose contact lenses? The conversion formula for the degree of power between frame glasses and contact lenses is: contact lens diopter = frame lens diopter ÷ (1-0.012 × frame lens diopter), where 1 diopter is equal to 100 degrees. Generally, when the degree is less than 400 degrees, the contact lens degree is the same as the frame lens degree, but when the myopia degree is relatively high, the gap between the two cannot be ignored. Therefore, when the frame glasses are 600 degrees, the contact lenses can choose 550 degrees.
Not suitable for contact lenses will not only deepen the degree, but also cause huge damage to the eyes, everyone must take it seriously.