How did Mao Xiaochun become blind in the drama "Good Times"?

While traveling in Mongolia, Yuan Hao took photos of Xiaochun riding horses on the grassland. Unexpectedly, while the two were joking, Xiaochun's horse suddenly got frightened and rushed out. Xiaochun could not control the reins and fell off the horse. He fell and suffered temporary blindness due to external trauma.

Extended information:

"Good Times" is an urban emotional drama jointly produced by Shanghai Guanyi Culture, SMG Shangshi Pictures, Anhui Radio and Television, and Tangren Film and Television. It is directed by Xia Xiaoyun , starring Hu Ge, Wang Xiaochen, Xu Yajun, Zhou Chuchu, Xu Baihui, Han Dongjun, and Lu Yisha.

The play tells the ironic love story between Yuan Hao, a travel agency representative, and Mao Xiaochun, a hospital doctor. The drama premiered on Dragon TV and Anhui TV on October 16, 2015.

Reference: Baidu Encyclopedia-Great Times