Section 193T. No insurance company offering for sale policies of life, accident, health, disability, or sickness insurance, or any other policy of insurance, shall make any distinction or discrimination as to the issuance of such policy or the rates or premiums charged therefor solely on the basis of the insured’s blindness or partial blindness, mental retardation or physical impairment, except where such distinction or discrimination is based on sound actuarial principles or is related to actual experience.