No continuation allowance shall be paid under this plan to a surviving spouse unless such surviving spouse was married to the member prior to the date of the injury, or onset of the illness, which illness or injury results in death before retirement, or if death occurs after retirement, unless such surviving spouse was married to the member at least one year prior to the date the member retired. This section shall not apply to any optional allowance under Section 2.124.1380 of this chapter. (Prior code § 34.06.633)