Ophthalmic Ultrasound

In 1956, Mundt and Hughes used an A-scan on an intraocular tumor, demonstrating the possible use of ultrasound in ophthalmology. Soon a body of research developed on the sound velocities of various tissues and compartments of the eye, and in the 1960s, ultrasound began to be used to measure distances in the eye. B-scan instruments developed in the 1970s, were originally used through closed eyelids. Ossoinig in the 1960s developed the standardized A-scan, which is used to differentiate tissues, particularly tumors. In the 1990s, high frequency ultrasound developed, which greatly improved the resolution and examination of anterior segment structures. Recent developments include the digitization of ultrasound so that three-dimensional imaging is possible.