Relieving Surgical Pain and Nausea With Light Therapy

The goal of this clinical trial is to investigate the effectiveness of colored (green and blue lens) glasses as a non-pharmacological method in relieving post-surgical pain and postoperative nausea in kidney donors. The main hypothesis it aims to test: H1: Postoperative use of green-lensed glasses by patients who are kidney donors is effective in relieving surgical pain and postoperative nausea. H2: Postoperative use of blue-lensed glasses by patients who are kidney donors is effective in relieving surgical pain and postoperative nausea. Researchers will compare the blue-lens glasses and green-lens glasses groups to the transparent (colorless) glasses group and the non-glasses group to see if the colored lenses have an effect on postoperative pain and nausea. Participants in the intervention groups will be asked * to wear the glasses (according to their randomly assigned group (blue/green/colorless/), immediately after they admitted to the ward postoperatively, at least 8 hours in a day, until their discharge * to respond the pain and nausea assessment (every 2 hours during postop day 1 and every 4 hours during postop day 2) until their discharge Participants in the control group will be asked - to respond the pain and nausea assessment (every 2 hours during postop day 1 and every 4 hours during postop day 2) until their discharge