He specializes in the surgical and medical care of vitreoretinal diseases such as macular degeneration, diabetic retinopathy, retinal detachment, uveitis, and inherited retinal dystrophies. Mahajan collaborates with leading scientists and physicians in the areas of proteomics and genomics. He believes translating the advances in molecular biology is the key to curing many forms of blindness. He contends that doctors who are as comfortable in the laboratory as they are in the operating room and clinic can accelerate the discovery process. Mahajan has published peer-reviewed papers in prestigious scientific journals, made presentations at national meetings, won research awards, and earned a U.S. patent. Mahajan has also been recognized by his peers since 2009 for inclusion in the Best Doctors in America.