SEOUL, South Korea — For two hours on Monday, a 92-year-old woman held her son’s hand and looked him in the eyes for the first time in more than 65 years, as family members from North and South Korea were permitted a rare chance to see one another after war divided their country and separated relatives.

The son, Ri Sang-chol, a 71-year-old North Korean, looked older than his mother, Lee Geum-seom, who has spent more than six decades in the South, since fighting in the Korean War ended in 1953.

Separated in the chaos of the war, the pair had not seen each other — or communicated in any way — until Monday, when Ms. Lee and 88 other elderly South Koreans were allowed to cross the heavily armed border between the Koreas for a three-day reunion with family members in the North.

“Mother, this is father,” Mr. Ri said, showing Ms. Lee a photograph of her deceased husband, who had also stayed in the North.