Can glaucoma be prevented?

Most types of glaucoma cannot be prevented. Vitamins and other nutritional supplements do not play a role in the prevention of glaucoma. While vision loss due to glaucoma cannot be recovered, with appropriate treatment, further vision loss can hopefully be prevented.
 
Those types of secondary glaucoma resulting from eye injuries or certain diseases, such as diabetes and uncontrolled hypertension (high blood pressure), may be preventable or even avoidable with certain measures, such as protective eyewear to avoid eye injuries and proper management of diabetes and uncontrolled hypertension.
 
One type of glaucoma, acute angle-closure glaucoma, can sometimes be prevented if a laser procedure is performed prior to its onset. To determine if you are at risk for acute angle-closure glaucoma, you should see an ophthalmologist (a medical doctor who specializes in eye care and surgery) for an eye examination.