Cal. Ins. Code § 10145
No insurer issuing, providing, or administering any contract of individual or group insurance providing life, annuity, or disability benefits applied for and issued on or after January 1, 1986, shall refuse to insure, or refuse to continue to insure, or limit the amount, extent, or kind of coverage available to an individual, or charge a different rate for the same coverage solely because of blindness or partial blindness.
"Blindness or partial blindness" means central visual acuity of not more than 20/200 in the better eye, after correction, or visual acuity greater than 20/200 but with a limitation in the fields of vision so that the widest diameter of the visual field subtends an angle no greater than 20 degrees, certified by a licensed physician and surgeon who specializes in diseases of the eye or a licensed optometrist.
Ca. Ins. Code § 10145