Inclusion Criteria:  Patients must be 17 years or younger, OR patients from 18-21 years of age must have been diagnosed with their condition prior to their 18th birthday Cognitively normal (no developmental delay or syndrome) Be able to tolerate wearing the virtual reality goggles for at least 10 minutes Be able to provide informed consent of a parent/guardian (and assent if 12 years or older) Do not have any ocular diseases that could interfere with the visual field testing  Exclusion Criteria:  Developmental delay Inability to obtain consent Inability to understand English