From the Editor — The following sources were used in the preparation of Jan Tennant’s article PRP, Eyes and Impaired Vision.

MedlinePlus, U.S. National Library of Medicine

• https://medlineplus.gov/ency/article/001017.htm

National Institutes of Health

• https://nei.nih.gov/health/cornealdisease/
• https://nei.nih.gov/health/dryeye/dryeye
• https://nei.nih.gov/health/blepharitis
• https://nei.nih.gov/kids/glossary
• https://nei.nih.gov/kids/about_the_eye
• https://nei.nih.gov/kids/your_eyes_natural_defenses

AllAboutVision.com

• https://www.allaboutvision.com/conditions/eye-discharge.htm
• https://www.allaboutvision.com/eye-exam/expect.htm