Sharon Olds wrote "The Glass" from a daughter/ son's point of view. Olds verbally paints a vivid picture of the glass that the father spits into in order to grab the attention of the reader. The daughter/ son is not fazed by this spit as he/she cleans the glass out for the father every so often without complaint. The spit has been formed due to a tumor in the father's throat. He has a seemingly inoperable cancer which prevents him from eating and living a normal life. This glass has obviously affected the lives of the people in the father's family.
This poem can easily be linked to the movie One True Thing. In this movie, the family's life revolves around the mother's cancer. Prior to the illness, the daughter of the family believes her father to be the greatest man in the world and has little regard for her mother. When her mother is diagnosed with cancer, everything changes. The daughter is forced to come home by her father in order to take care of the mother. This disease acts as a bright light on life for the daughter and in the end, reveals everyone's true nature. This type of effect of cancer is spoken of in "The Glass." Olds writes that while the father had been the center of the universe for the daughter in the past, the glass full of spit has now become the sun that the family revolves around. When the father is afflicted with cancer, his family is obviously affected in many ways. .
This poem leads the reader to believe that the daughter is responsible to care for her father and sees him in a new light. This epiphany is echoed in One True Thing. While caring for her terminally ill mother, the daughter sees her mother in a new light. This new reality reveals her mother to be a strong, well-regarded woman who is loved by her community. The cancer exposes the truth about her father who is an alcoholic. She now sees him to be self-absorbed and selfish, displacing her previous sense of awe.