PURPOSE: The purpose of this study is to evaluate the use of and beliefs toward social media (SM) among Saudi ophthalmologists. METHODS: This was a cross-sectional descriptive study. A web-based, self-administered questionnaire was e-mailed to ophthalmologists within Saudi Arabia. RESULTS: Out of 392 recipients, 293 completed the survey (74.7% response rate). The vast majority (90.1%) used at least one platform for personal and professional purposes or either. The three most commonly used applications were Twitter (72.3%), Snapchat (65.9%), and Instagram (51.9%). The opinions of respondents with regard to the different aspects of SM varied widely. Around half (56.7%) believed that it was permissible for ophthalmologists to promote themselves on SM and 70.6% agreed that SM usage by health-care professionals should be regulated. Participants believe that SM had both a positive and a negative impact on their daily life and clinical practice. For example, 94 (32.1%) respondents stated that it improved their ability to educate patients, on the other hand, 80 (27.3%) reported that SM wastes quality time that can be spent on something more productive. CONCLUSION: Our results demonstrate an increased utilization of SM among Saudi ophthalmologists. The ethical aspects of SM usage were a matter of controversy among our respondents. This necessitates the establishment of guidelines by regulatory bodies and/or individual health-care organizations.