Our eyes are, both literally and figuratively, windows to the world, and ophthalmic approaches offer a tremendous space for conducting research to learn more. Male/female differences in ocular health and disease are prevalent but we know far too little about root causes to design and implement diagnostic, preventive, and treatment strategies to address sex- and gender-based disparities in eye health. Herein, we discuss several ophthalmic diseases and other conditions with ocular manifestations, with a focus upon those that disproportionately affect women. Because the vast majority of biomedical research in this area comes from studies of mixed-gender populations, or of male-predominant populations, there is a pressing need for sex- and/or gender-based research at various points along the basic to clinical biomedical research continuum. Moreover, the multitude of factors that affect eye health call for a balanced look at the influence of biology, culture, and societal contributors. As clinicians, we owe our patients the best care for their needs, and that care must be derived from research that shows what is effective, for whom, and under what conditions.