A Hand-Operated, Ultrasound Scan System for Ophthalmic Evaluation

B-scan ultrasonography of the anterior segment of the eye.

“…Coleman and colleagues (Coleman et al, 1969;Coleman, 1972;Coleman et al, 1973a, b) have improved ultrasonic apparatus and techniques and have illustrated a normal anterior segment in early papers. Coleman et al (1969) andVanysek et al (1969) reported a series of 25 normal and aphakic eyes in which imaging of the anterior segment was attempted.…”

“…Many of these problems are overcome if the waterbath technique is used (Coleman et al, 1969) and the eye is kept open during the examination. In practice the distance of the probe from the cornea is usually 10 to 20 mm, and the problem of the focal length being posterior to the eye does not appear to be of great importance.…”

“…Ultrasonic examination is with the Sonometrics 100 Ophthalmoscan (Coleman et al, 1969), a purpose-built scanner assembled for high resolution ophthalmic application. It is possible to image the anterior segment with this equipment.…”

“…It is possible to image the anterior segment with this equipment. The acoustic coupling is by the waterbath technique previously described by Coleman et al (1969). The contact Bscanner (Bronson and Turner, 1973) does not image the anterior segment unless a waterbath is used.…”

A New B-Scan System for Ophthalmic Diagnosis

“…He stated that the arc scan is the most convenient scan method for the display of the eye. Coleman et al [1969] showed excellent pictures of the eye obtained with a hand-operated B-scan system by using a linear-sector compound scan method. In order to be able to scan both eyes simultaneously the linear scan is the best choice.…”