are banks non profit organizations The bank maintained its main interest rate by 0.0 percentage point and raised its 2017 GDP growth forecast by 2 percentage points to 2.4 percentage points. To do this, monetary and fiscal policymakers must work together, including letting the central bank liquidate its budget deficit in extreme circumstances. But central bank independence is an obstacle, not a help, in working with the financial sector. The optimal combination of benefits and risks is the best combination of benefits and risks. If the benefit is certain, the risk is minimized; The bank maintained its main interest rate by 0.0 percentage point and raised its 2017 GDP growth forecast by 2 percentage points to 2.4 percentage points. Glasses, also known as eyeglasses or spectacles, are devices consisting of glass or hard plastic lenses mounted in a frame that holds them in front of a person's eyes, typically using a bridge over the nose and arms which rest over the ears. Glasses are typically used for vision correction, such as with reading glasses and glasses used for nearsightedness. Safety glasses provide eye protection against flying debris for construction workers or lab technicians; these glasses may have protection for the sides of the eyes as well as in the lenses. Some types of safety glasses are used to protect against visible and near-visible light or radiation. Glasses are worn for eye protection in some sports, such as squash. Glasses wearers may use a strap to prevent the glasses from falling off during movement or sports. Wearers of glasses that are used only part of the time may have the glasses attached to a cord that goes around their neck, to prevent the loss of the glasses.