The Sonomed 300AP+ is a compact and user-friendly A-scan ultrasound device for precise ophthalmic biometry. It accurately measures axial length, a crucial parameter for intraocular lens (IOL) power calculation in cataract surgery. Featuring a clear touchscreen interface, the 300AP+ offers both contact and immersion measurement modes for optimal accuracy and flexibility. Its integrated IOL formulas streamline the pre-operative process, allowing for efficient and reliable IOL power prediction. The device’s portability and robust design make it suitable for various clinical settings. With its focus on accuracy and ease of use, the Sonomed 300AP+ is a valuable tool for ophthalmologists seeking to optimize surgical outcomes and enhance patient satisfaction. It provides dependable measurements for precise IOL selection, contributing to improved refractive results after cataract surgery.