Rear overhang in excess of 4 feet is required to. display a 18-inch-square red flag for daytime. travel and clearance lights during nighttime. travel. Loads shall not extend more than. 14 feet beyond the rear of the bed or body of. the vehicle.
Patricia Bath's patent (no. 4,744,360), a method for removing cataract lenses, transformed eye surgery, using a laser device making the procedure more accurate. Patricia Bath patentPatricia Bath s passionate dedication to the treatment and prevention of blindness led her to develop the Cataract Laserphaco Probe.
Steven Trokel. New York City ophthalmologist, Steven Trokel made the connection to the cornea and performed the first laser surgery on a patient's eyes in 1987. The next ten years were spent perfecting the equipment and the techniques used in laser eye surgery. In 1996, the first Excimer laser for ophthalmic refractive use was approved in the United States. Note: It took the observations of Dr. Fyodorov in a case of eye trauma in the 1970's to bring about the practical application of refractive surgery through radial keratotomy.