Sea Buckthorn Oil has garnered scientific interest for its potential benefits to ocular health, especially in supporting the tear film and alleviating dry eye symptoms. The oil is rich in omega-7 fatty acids, particularly palmitoleic acid, along with other healthy fats, antioxidants, and vitamins. Several randomized controlled trials and observational studies have explored its effects on eye health, primarily focusing on dry eye disease.

For example, a notable double-blind, placebo-controlled study published in the journal Journal of Nutrition (2005) demonstrated that oral supplementation with Sea Buckthorn Oil reduced the increase in tear film osmolarity and improved symptoms in subjects exposed to dry, windy environments. Another review in Experimental Eye Research (2017) indicated that the oil's fatty acid profile may improve meibomian gland function and reduce inflammation associated with dry eye.

While these studies are promising, most have relatively small sample sizes, and there is a need for larger, more robust clinical trials to confirm efficacy and establish optimal dosing. Nevertheless, current scientific evidence does support the use of Sea Buckthorn Oil as a complementary approach for supporting eye comfort and tear production, earning it a moderate evidence rating.