Therapeutic Areas Therapeutic Areas Surgical Cataract › Vitreoretinal › Visualization › Refractive › Glaucoma › Ocular Health Dry Eye › Contact Lens Contact Lenses › Contact Lens Solutions › Recent Publications Refractive and Diffractive Principles in Presbyopia-Correcting IOLs - An Optical Lesson Intraocular Lenses Multifocality in IOLs is achieved through refractive or diffractive optical approaches Learn More Evolution of Systane® Artificial Tears Dry Eye Artificial tears aim to replicate the natural tears’ composition and physical properties. Learn More Phacoemulsification at High IOP and Physiologic IOP; Impact on Anterior and Posterior Segment Physiology Cataract Diagnostics and Equipment Matthew Rauen, MD Clinical Study video: Phacoemulsification at High IOP and Physiologic IOP; Impact on Anterior and Posterior Segment Physiology Learn More View More © 2025 Alcon Inc. p-MED-GAS-NP-250005