Prab: CSV import

2025-02-18T01:16:30Z

CSV import

← Older revision		Revision as of 01:16, 18 February 2025
Line 35:		Line 35:

	{{stub}}		{{stub}}
			== Lensmeter ==
			<gallery>
			File:Vertometry-InstrumentSetUp-Calibration.ogv\|Vertometry Instrument Set Up Calibration
			File:Lensmeter.jpg\|Lensmeter
			File:Lensmeter-2.png\|Lensmeter
			</gallery>

Prab: CSV import

2024-02-22T03:41:02Z

CSV import

New page

'''Lensmeter''' is a device used by [[optometrists]] and [[opticians]] to verify the correct prescription in a pair of [[eyeglasses]]. It is also known as a '''lensometer''', '''focimeter''', or '''vertometer'''.

== Function ==

The lensmeter works on the principle of [[back vertex power]], which measures the optical power of the lens. This is done by focusing light through the lens and measuring the focal point at which the light converges.

== Components ==

The lensmeter consists of several components:

* '''Target Eyepiece''': This is where the user looks through to see the target.
* '''Lens Table''': This is where the eyeglasses are placed.
* '''Prism Compensator''': This is used to measure the prism power of the lens.
* '''Power Drum''': This is used to adjust the focus of the target.

== Usage ==

To use a lensmeter, the eyeglasses are placed on the lens table and the target is viewed through the eyepiece. The power drum is then adjusted until the target comes into focus. The power of the lens can then be read off the power drum.

== Types of Lensmeters ==

There are two main types of lensmeters:

* '''Manual Lensmeters''': These require the user to manually adjust the focus of the target.
* '''Automatic Lensmeters''': These automatically adjust the focus of the target.

== See Also ==

* [[Optometry]]
* [[Optician]]
* [[Eyeglasses]]

[[Category:Optometry]]
[[Category:Medical equipment]]

{{stub}}

Lensmeter - Revision history

Prab: CSV import

Prab: CSV import