Equipment Maintenance and Repair

Slit lamp biomicroscope — the anterior-segment workhorse. Know the illumination arms, magnification changer, and how to focus and center for the physician.

Lensometer — reads sphere, cylinder, axis, prism, and add from spectacles. Verify calibration reads plano with no lens in place.

Keratometer — measures anterior corneal curvature (K readings) for contact lens fitting and IOL calculations; check against calibration balls.

Daily care — dust covers on, chin rests wiped between patients, bulbs and batteries stocked, calibration checks logged. A mis-calibrated instrument quietly corrupts every measurement taken with it.