Inclusion criteria:  Treatment Naïve patients:  - Any patient who is able to give consent for the study and did not receive an intravitreal injection in the past 6 months  Patients receiving injections:  - Patient currently undergoing treatment for which he/she receives a intravitreal injection in one eye.  Exclusion Criteria:  Treatment Naïve patients:  Intravitreal injections in the past 6 months Use of eye drops for treatment of glaucoma in the past 6 months Use of eye drops with antibiotics or steroids in the past 6 months  Patients receiving injections:  Patient receiving injections in both eyes Use of eye drops for treatment of glaucoma in the past 6 months Use of eye drops with antibiotics or steroids in the past 6 months Have any condition that, in the opinion of the investigator, would compromise the well-being of the patient or the study or prevent the patient from meeting or performing study requirements.  For both groups:  Adults unable to consent Individuals who are not yet adults (infants, children, teenagers) Pregnant women Prisoners