The Pocket II serves ophthalmology clinics, optometry practices, and refractive surgery departments that record corneal thickness during an examination. Quantel Medical lists the instrument for glaucoma screening andpre-refractive surgery work, and its 200 × 100 × 45 mm body lets one unit travel between rooms.
Ophthalmologists, optometrists, orthoptists and ophthalmic technicians operate it by hand. The operator presses the 20 MHz transducer probe to the cornea, and the thickness appears on the numerical display. In automatic mode, the unit takes ten measurements and returns their average and standard deviation, so the operator records one result and sees the spread behind it. Central measurement and corneal mapping options let the examiner choose the routine that suits the case, and the reading appears as soon as it is taken.
The measuring range of 200 to 999 µm is accurate to ±5 µm. A calibration screen shows the ultrasound speed setting the unit uses to calculate thickness from the echo, and the instrument keeps its configuration data between sessions.
Practices that keep digital records use the internal storage and the Echo Data Manager software. Exam data is exported to a PC or server in DICOM or EMR format so the result is cached in the patient record. Four AA alkaline batteries power the unit for work away from a wall outlet, and an optional external 9 V DC supply allows operation from the mains. The batteries stay installed while that supply is connected, which preserves the configuration data.