Inclusion Criteria:  Diagnosed with cystic fibrosis or chronic obstructive pulmonary disease (COPD) Adult age 18 or older Admitted to the pulmonary step-down and transplant unit Score greater than zero on pre-intervention BDI-II  Exclusion Criteria:  Pre-existing ophthalmological conditions or photosensitivity Migraines Receiving high dose steroids for transplant rejection (due to mood altering qualities), Antibiotics that increase light sensitivity Diagnosed with bipolar disorder (light therapy may trigger mania) Admissions anticipated to span less than 48 hours Children are being excluded due to the fact that only adult CF and COPD subjects are admitted to UPMC Presbyterian hospital