Smoking. It’s not just bad for your lungs, heart, and pretty much every organ in your body according to the Centers for Disease Control, but it’s detrimental for your eyes, too. In addition to increased risks of heart and lung cancer, stroke, and type 2 diabetes, smoking can dramatically increase your chances of vision loss as you age.

Eye diseases such as age-related macular degeneration (AMD) skyrocket by 25 percent for smokers. And it doesn’t end there: nonsmokers will double their risk of getting AMD just by living with a smoker and being exposed to second-hand smoke. AMD is an incurable vision disease that attacks the center part of the retina causing a dark spot in the center of your field of vision. Cataracts, a white, cloudy film that forms over the lens, are two times more likely to develop in a heavy smoker (15 or more cigarettes a day) than to a nonsmoker.

Smokers are twice as prone to uveitis (an inflammation of the iris area of the eye) and dry eye syndrome (where there aren’t enough tears to lubricate the eye).

And if all that wasn’t bad enough, the risk of developing diabetes is 30–40 percent higher for smokers, which can trigger eye diseases like glaucoma and diabetic retinopathy.

Traditional cigarettes are not the only cause for concern amongst smokers either. According to Vaping Daily, an online trade magazine covering the latest trends in e-cigarettes (smoking e-liquids via an electronic cigarette), the vapor clouds that are created in exhalation are being studied for their effects on vision as well.

To increase your chances of slowing down or halting the onset of these diseases the solution is simple: stop smoking and limit your exposure to people who do in your environment.