| 摘要 |
<p>PROBLEM TO BE SOLVED: To make it possible to exert a pinhole effect and block irregular incidence of light caused by keratoconus cornea or irregular astigmatism by a sunglass effect.SOLUTION: A contact lens has: two light shielding part bodies 18a,18b having different light-shielding rates which consist of a light shielding material including a translucent member; and a pinhole 12 which is provided at the position of the light shielding part body 18a including an optical axis connecting the center of a cornea and the center of a retina and allows incident light to pass therethrough. The light shielding part body 18b is arranged on the outer periphery of the light shielding part body 18a, a light-shielding rate of the light shielding part body 18a is set within a range of a light-shielding rate where a pinhole effect that light passing through the pinhole 12 advances straight without curving and passes on the original focal point on the retina is obtained, and a light-shielding rate of the light shielding part body 18b is set within a range of a light-shielding rate where a sunglass effect that the light shielding part body 18b weakens light energy of at least one of blue-based light and yellow-based light to block the incidence of light having a specific wavelength is obtained.</p> |
