General

Synonym/Acronym:
Amplitude modulation scan, A-scan ultrasound biometry.

Rationale
To assess for ocular tissue abnormality and to determine the power of the intraocular lens required for replacement in cataract surgery.

Patient Preparation
There are no food, fluid, activity, or medication restrictions unless by medical direction.

Normal Findings

• Normal homogeneous ocular tissue.

Critical Findings and Potential Interventions
N/A