Okla. Stat. tit. 85a § 114
When a compensable injury results in the loss of one or more eyes, teeth, or members of the body, or the replacement of a joint, the employer shall furnish such prosthetic devices as may be necessary as determined by the Workers' Compensation Commission in the treatment and rehabilitation of the injured worker for the lifetime of the worker. When a worker sustains a compensable injury, arising out of and in the course of his or her employment, which results in damage to a prosthetic device with which such worker is equipped, the employer shall repair or replace such device. Provided, that a subsequent injury to the part of the body for which a prosthetic device is provided shall terminate the obligation of the employer to provide such prosthetic device.
Okla. Stat. tit. 85a, § 114