The Digital Journal of Ophthalmology (DJO) is a peer reviewed journal based at Harvard University designed to serve as "a valuable resource for ophthalmologists, other health care providers, vision scientists, and patients throughout the world." On the site's homepage, visitor can look over Grand Rounds, Original Articles, and Case Reports. The Grand Rounds area brings together reports from the world of ophthalmology, which can be most useful to those in the field. The site also contains a range of editorials, and visitors are encouraged to register with the DJO to receive personalized updates. The Knowledge Review section provides a series of quizzes for ophthalmologists on relevant topics such as glaucoma or pathology. Finally, the Patient Information area contains materials for laypeople on topics such as laser vision correction.