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Ophthalmic Instrument
Digital Auto Refractometer
Minimum Order Quantity: 1 Piece
Brand | Top Seiko |
Measurement Mode | Refractometry Mode, Keratometry Mode |
Additional Information:
- Delivery Time: 7 Days
- Packaging Details: Cartoon
Digital Auto Refractometer
Minimum Order Quantity: 1 Piece
Brand | Top Seiko |
Measurement Mode | Refractometry Mode, Keratometry Mode |
Additional Information:
- Delivery Time: 7 days
Digital Auto Refractometer
Minimum Order Quantity: 1 Piece
Brand | Top Seiko |
Measurement Mode | Refractometry Mode, Keratometry Mode |
Additional Information:
- Delivery Time: 7 Days
- Packaging Details: cartoon
Digital Auto Refractometer
Minimum Order Quantity: 1 Piece
Brand | Grand Sieko |
Measurement Mode | Refractometry Mode, Keratometry Mode |
Additional Information:
- Delivery Time: 7 Days
- Packaging Details: cartoon
Lensometer
Minimum Order Quantity: 1 Piece
Operation Mode | Automatic |
Axis Angle | 0 to 180 degree |
Sphere Power Range | -25 D to +25 D |
Material | Metal |
Printer | Thermal Printer |
Touchscreen Monitor Size | 5.7 |
A lensometer, also known as a lensmeter or focimeter, is a specialized instrument used in optometry and ophthalmology to measure the prescription of eyeglass lenses. Here's how it works and its significance:
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Measurement of Lens Power: The primary function of a lensometer is to measure the optical power of a lens. This includes determining the lens's spherical power (for nearsightedness or farsightedness), cylindrical power (for astigmatism), and axis (the orientation of the cylindrical power).
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Principle of Operation: A lensometer works based on the principle of focusing light passing through the lens onto a target. The instrument contains a light source, a target, and a set of lenses or prisms. By aligning the lens under test with the target and adjusting the instrument's focus, the operator can accurately measure the lens power.
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Reading Diopters: The measurement scale of a lensometer is typically in diopters, the unit of measurement for lens power. The lensometer allows the operator to read the power of the lens in both spherical and cylindrical values, as well as the axis of any astigmatism correction.
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Verification of Prescription: Lensometers are essential tools in optometric practices for verifying the prescription of eyeglass lenses. Opticians use them to confirm that the lenses have been ground to the correct prescription specified by the optometrist or ophthalmologist.
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Adjustment and Verification: In addition to measuring lens power, lensometers often include features for adjusting and verifying the position and alignment of the lenses within the eyeglass frame. This ensures that the lenses are correctly centered and aligned according to the patient's prescription.
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Use in Eyeglass Manufacturing: Lensometers are also used in the manufacturing process of eyeglass lenses to verify the accuracy of lens prescriptions before they are fitted into frames. This helps to ensure the quality and precision of the finished eyewear.
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Training and Education: Lensometers are commonly used in optometry and ophthalmic technician training programs to teach students how to measure and verify lens prescriptions accurately. Proficiency in using a lensometer is a fundamental skill for anyone working in the field of optometry or optical dispensing.
In summary, a lensometer is a critical tool in optometric practice for measuring, verifying, and adjusting the prescription of eyeglass lenses, ensuring accurate vision correction for patients.
Additional Information:
- Delivery Time: 7 Days
- Packaging Details: Cartoon
Oculus Ub4 Universal Trial Frame
Minimum Order Quantity: 1 Piece
Usage | Hospital, Clinic |
PD Range | 46-80 mm |
Nose Pads Adjustable | Yes |