Continuous zoom contact lenses

Abstract

The invention relates to a continuous zooming contact lens, which comprises a central optical zone and a peripheral zone, wherein the central optic zone comprises a first optic zone and a second opticzone, the first optical zone is a circular zone enclosed by using one central optical axis of the continuous zooming contact lens as the circle center and has a radius of 1.5+ / -1.0 mm, the second optic zone extends radially and outwardly from the peripheral edge of the first optic zone to the peripheral zone, the diopter of the continuous zooming contact lens is radially and continuously changed,and the average change rate of the diopter is less than 0.25 D / mm in the first optical zone and is more than 0.25 D / mm in the second optical zone. According to the present invention, by radially andcontinuously changing the diopter, the continuous zooming contact lens can correct the refractive error of eyeball and simultaneously correct the imaging focal point around retina, such that the smooth and image-jump-free myopia defocus around retina can be generated.

Description

technical field [0001] The invention relates to glasses, in particular to a contact lens. Background technique [0002] refer to figure 1 , the eyes 9 of the myopia patient image the distant scene in front of the retina 91, so a clear image cannot be formed on the retina 91. However, see figure 2 When the myopic patient's eye 9 wears a myopic contact lens 8 with a concave lens, the distant scene is imaged on the retina 91 through the correction and adjustment of the myopic contact lens 8 . [0003] When the above-mentioned myopia patients confirm the degree of myopia and make glasses, they take long-distance measurement to find out the myopia contact lens 8 that can correct the eyesight of the myopia patient. The final visual acuity is 1.0 sharpness, and you can see clearly the scenery five meters away. [0004] However, myopia patients mostly wear the above-mentioned myopic contact lenses 8 configured for long-distance measurement, watch the screens of electronic produ...

AI Technical Summary

Problems solved by technology

However, the biggest problem with the multifocal contact lens 7 is that when the wearer looks at the different focus areas 71 and 72 of the multifocal contact lens 7 when looking at the far and near, in order to achieve the instant conversion of seeing near and far, the different focal points The dioptric power between the regions 71 and 72 fluctuates rapidly. Some wearers' eyes 9 cannot adapt to the above-mentioned sudden diopter power change, which will cause image skipping and blurring. After long-term wear, the wearer is prone to adverse reactions such as dizziness or maladaptation

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