Manual Keratometer – Ophthalmic Corneal Curvature Measuring Instrument

The Manual Keratometer is a precision ophthalmic diagnostic instrument designed to measure the curvature and refractive power of the anterior corneal surface. It helps eye care professionals assess corneal astigmatism, determine corneal curvature and obtain measurements for contact lens fitting and intraocular lens power calculations. Featuring an adjustable optical measurement system, illuminated mires and precision focusing controls, the instrument is suitable for eye hospitals, ophthalmology clinics, optometry centres and optical laboratories. Key Features & Specifications - Equipment Type: Manual Keratometer - Measurement Method: Manual optical keratometry - Instrument Type: Bausch & Lomb-type keratometer - Measuring System: External reading - Corneal Refractive Power Range: Typically 36.00D–52.00D - Corneal Curvature Radius Range: Approximately 6.4–9.5 mm - Measurement Increments: 0.25D - Radius Measurement Increments: Typically 0.05 mm - Astigmatism Axis Range: 0°–180° - Axis Graduation: Typically 5° - Eyepiece Magnification: 15× - Eyepiece Adjustment: Model-dependent - Optical System: Achromatic optical system - Focusing Mechanism: Coincidence focusing system - Measurement Meridians: Horizontal and vertical principal meridians - Illumination: LED or conventional bulb, depending on model - Patient Positioning: Adjustable chin rest and forehead support - Height Adjustment: Manual vertical adjustment - Power Supply: Typically AC 220–240V, 50Hz for mains-powered models - Calibration: Calibration sphere supplied on selected models - Mounting: Stable tabletop base or compatible examination stand - Accessories: Dust cover, spare bulb and calibration ball, depending on package - Clinical Applications: Corneal curvature measurement, corneal astigmatism assessment, contact lens fitting and preoperative eye measurements - Suitable Facilities: Eye hospitals, ophthalmology clinics, optometry centres and diagnostic facilities