How to read the base curve on a prescription for eyeglasses
Oct 26, 2023
Source: Cainiu Health
Dr. Wang Shuai
Introduction
In general, a prescription for eyeglasses cannot be used to determine the base curve. The base curve refers to the radius of curvature of a contact lens and is an important parameter for contact lenses. The base curve affects how well the lens fits on the surface of the eye, which is crucial for ensuring comfortable wear and clear vision. In contrast, an eyeglass prescription typically indicates the eye's refractive status, showing conditions such as myopia, hyperopia, and astigmatism.
Generally speaking, an eyeglass prescription cannot be used to determine base curve. The detailed explanation is as follows:
The base curve refers to the radius of curvature of a contact lens and is an important parameter of contact lenses. The base curve affects how well the lens fits the surface of the eye, which is crucial for ensuring comfortable wear and clear vision. In contrast, an eyeglass prescription typically indicates the eye's refractive status, including conditions such as myopia, hyperopia, and astigmatism. An eyeglass prescription includes parameters such as spherical power, cylindrical power, axis of astigmatism, pupillary distance, and interpupillary distance. Since an eyeglass prescription measures characteristics of the eye itself rather than contact lenses, it does not provide information about the base curve.
To measure the corneal base curve, the corneal radius of curvature must be assessed. If you wish to determine your corneal curvature, it is recommended to visit a正规 hospital to undergo the necessary examinations.
