In optometry and optical dispensing, there is a very useful device known as the lensmeter, also known as a focimeter. It is mainly used to measure the optical properties of lenses and give information about the sphere, cylinder, axis, and prism, all of which are of certain importance when it comes to ensuring that the prescription recommends the most suitable pair of glasses or contact lenses to a patient. Devine Meditech has been reigning in the business of manufacturing the best lens meters in India for years and years now, equipping its products with high-tech features like Hartmann sensor (more than 100 measurement points), 535 nm wavelength (Green measurement light) Low transmittance rate (≥5%) of measured lens, tinted /polarized lens, virtual PD measurement, UV measurement function, and data transfer facility available to Sight Tester/ Phoropter.
Refraction of light is important for the working of a lens meter. It helps to measure the extent to which the lens bends or refracts light. This measurement helps in determining the optical power of the lens, which is very important in correcting refractive errors of astigmatism, hyperopia, and myopia.
1. Eyepiece: The eyepiece allows adjusting the focus while viewing the measurement reticle.
2. Lens Holder: This serves as a holder for the lens while it is being measured.
3. Measurement Dial: It provides adjustment for the focusing of the light beam that measures the power of the lens.
4. Prism Compensator: This attachment is fitted for correcting imbalances in the eye and computing prism power in lenses.
5. Axis Scale: This aids in determining the direction of cylindrical lenses quite essential for astigmatism correction.
The two main types of lens meters available today are-
1. Manual Lens Meter:
Offering a simple and inexpensive solution, this type of lens metres use a simple optical system which must be calibrated manually. They are generally considered ideal for teaching applications and simple lens measurements.
2. Digital Lens Measurement
Offering automatic readings and additional functionality, like UV measurement, this type of lens metres are considered easier to use and demonstrate higher accuracy. They are generally employed for advanced optical diagnostics and high-volume practices.
1. Prescription verification: Matches the prescription values with the lenses provided.
2. Lens inspection: This involves checking the lenses for flaws or any anomalies.
3. Prism measurement: This is the measurement of the power of a lens regarding the prism, which is considered very essential to many people who have misaligned eye problems.
4. Contact Lens Fitting: Contact lens fittings aid in finding the proper prescription for contact lenses.
In summary, the lens meter is an essential tool in the optical industry and ensures that a correct prescription is availed to the patients, as needed. Whether a person is an optometrist with many years of experience or a newcomer in the trade, knowing how to use and interpret data from the lens meter is very important. Considered the best manufacturer of lens meters in India, Devine Meditech believes that with advancements in technology, digital lens meters shall be further enriched with various features and become very user-friendly, increasing process accuracy and efficiency.