A-scan Ultrasound biometry, also referred to as just A-scan, utilizes an ultrasound device for diagnostic testing in Opthalmology practices. This device can determine the length of the eye and can be useful in diagnosing common sight disorders. A-scans are also extremely beneficial in cataract surgeries, as they enable the Opthalmologist to determine the power of the intraocular lens (IOL) needed for the artificial implant. Another use for A-scans is diagnosing and measuring masses in the eyes. Determing which A-scan product would be useful for your practice can be daunting and many boast extra features, or combined uses such as A-scan/Pachymeters or A-scan/B-scan. Choose your vendor wisely and be sure they offer some form of customer service for training and implementation.