2024年9月24日 · When an eyeglass prescription has cylindrical power (CYL value), the axis value directs where to place the power in the lenses. This allows people with astigmatism to see better. In eyeglass prescriptions, optometrists will note both the cylinder power and axis.

2023年4月18日 · An eye with astigmatism is oval- or egg-shaped, or more like a North American football—one curve is longer than the other. The CYL number corrects this different second curve. Axis. This number tells you where the astigmatism is on the cornea. The axis—written in degrees between 1 and 180—indicates which way the astigmatism lines up. Add

2024年10月9日 · Cylinder correction power always follows sphere power in an eyeglass prescription. Axis. The axis number on your corrective lens signifies the angle of the cylinder's placement, helping correct astigmatism. Including the axis when a prescription includes cylinder power (CYL) is crucial.

2022年9月8日 · An axis value of 90 refers to the eye’s vertical meridian (from top to bottom). Meanwhile, a value of 180 corresponds to its horizontal meridian (from side to side). The axis number doesn’t tell you how much astigmatism your eyes have — …

2023年8月21日 · The axis measurement in your eye prescription holds great importance in determining the accuracy and effectiveness of your vision correction. It plays a vital role in addressing astigmatism and ensuring that your lenses are custom-designed to align with the irregularities of your eye.

2024年10月30日 · A typical eye prescription usually includes spherical value that indicates near sightedness or far sightedness, cylindrical value that measures astigmatism and axis that tells about the orientation of astigmatism.

2019年2月26日 · If an eyeglass prescription includes cylinder power, it also needs to include an axis value, which follows the cylinder power. Meridians of the eye are determined by superimposing a protractor scale on the eye's front surface.

2023年5月24日 · In a prescription for eyeglasses, the axis is a degree measurement from 1 to 180 that denotes the orientation of the astigmatism correction in the lens. The axis is only relevant if the prescription contains a cylinder value, as the cylinder value represents the quantity of astigmatism correction required.

2022年11月11日 · The axis number on your eye prescription will tell your optician in which direction they must position any cylindrical power in your lenses – which is typically required for people who have astigmatism. The axis number shows the orientation or angle of the eye in degrees ranging from 1 to 180.

2023年12月29日 · Axis: Precision in Lens Positioning. Axis is crucial for astigmatism correction. It's a measurement in degrees, indicating the orientation of the cylinder power. The axis ensures the cylindrical correction aligns precisely with the astigmatic curve of your cornea, providing clear vision. Add Power: Enhanced Reading Vision