Nearly everyone who has cataract surgery will be given an artificial lens called an intraocular lens (IOL). These lenses improve your vision by focusing light on the back of your eye. You won't be able to see or feel the lens. It requires no care and becomes a permanent part of your eye.
Quora User, Driving since 1995. Gas is always on the right, brake is in the left in an automatic and the Middle in a manual. The brake is always the next peddle to the left of the gas.
Drum brakes are a very common braking option used on many vehicles today. While disc brakes have become the standard for use on the front and rear axles of many vehicles, drum brakes are still very commonly used. However, they are usually found on the rear axle of a vehicle, and usually also function as the parking brake for the vehicle. While both disc and drum brakes are commonly found across all types of vehicle platforms, and are both safe and reliable braking options, they do differ significantly in design and operation.