B-Scan is one of the most popular eye examinations available to the eye experts today. In simpler terms, it is an ultrasound exam for the eye and surrounding area. The machine uses the same principles that are used by ultrasound machines used for general body examination.
The test is an invaluable aid in developing a clear picture of the eye and the surrounding area. The high frequency sound waves used in test are echoed back by the structure of the eye. These echoes are used to create a picture of the soft and hard tissues of the eye.
B-Scan is often used where other imaging techniques are not feasible or suitable. A very common example is the presence of cataracts where the condition of the eye usually precludes the use of traditional examination methods. Similarly, the test is used to diagnose the extent of damage where the eye is clouded and the traditional examination techniques could not be used effectively.
The Procedure Of B-Scan
One of the important things to remember about this exam is that it is a noninvasive procedure. Thus, no part of the machine used in the examination touches the eye. To start the procedure, the technician usually places drops in the eye that numbs the structure of the eye.
Once the eye has been numbed, the wand of the machine is placed close to the eye. The sound waves generate a picture of the structure of the eye. The patient is asked to look in several directions in order to generate a clear and detail picture of the eye.