1. Any member in active service who has completed ten or more years of creditable service and who has become permanently unable to perform the full and unrestricted duties of a police officer as the result of an injury or illness not exclusively caused or induced by the actual performance of his or her official duties or by his or her own negligence shall be retired by the board of police commissioners upon certification by one or more physicians of the medical board of the retirement board that the member is mentally or physically unable to perform the full and unrestricted duties of a police officer, that the inability is permanent or likely to become permanent, and that the member should be retired. The inability to perform the full and unrestricted duties of a police officer means that the member is unable to perform all the essential job functions for the position of police officer as established by the board of police commissioners.

2. Upon such retirement on or after August 28, 2001, a member shall receive a base pension equal to two and one-half percent of final compensation multiplied by the number of years of creditable service. Such pension shall be paid for so long as the permanent disability shall continue, during which time such member shall for purposes of this section be referred to as a nonduty disability beneficiary.

3. Once each year during the first five years following such member’s retirement, and at least once in every three-year period thereafter, the retirement board may, and upon the member’s application shall, require any nonduty disability beneficiary who has not yet attained the age of sixty years to undergo a medical examination at a place designated by the medical board. If any nonduty disability beneficiary who has not attained the age of sixty years refuses to submit to a medical examination, his or her nonduty disability pension may be discontinued until his or her withdrawal of such refusal, and if his or her refusal continues for one year, all rights in and to such pension may be revoked by the retirement board.

4. If one or more members of the medical board certify to the retirement board that a nonduty disability beneficiary is able to perform the full and unrestricted duties of a police officer, and if the retirement board concurs in the report, then such beneficiary’s nonduty disability pension shall cease.