A lensometer has different names like a focimeter or vertometer. This ophthalmic instrument is basically used by the optometrist and the ophthalmologists to see whether the prescription of power for the glasses is correct or not. It also can help the technicians to orient the glasses properly as well as mark the uncut lenses. You can have an idea of whether the lenses are mounted properly on the frames or not. This instrument is very useful in determining the power of the contact lenses with the help of a special lens support instrument. It needs the perfect value parameters that have been set by your ophthalmologist or optometrist. There are different kinds of parameters like the sphere, cylinder, axis of vision, add, and in some of the specific cases prism. These are the factors that define the insertion of light on the cornea and then only you can see an object properly. It defines one of the most critical things of a lens, the center of it which is very important for the proper vision of a person. The Marco Manual Lensometer has passed in all the tests made by the experts which are important for making a spectacle fittest to see.
There are different types of lensometers made by different companies. Among all these the Marco Manual Lensometer is a very popular one to the experts. These focimeters vary according to the target that is viewed by the experts through the instrument.
- A fixed ring target is an array of some dots who’s linear distortion varies as per the power of the lens that the expert is viewing.
- A rotating line target is viewed when you see that the line has been rotated in order to match with the cylindrical axis of the lens.
- The projection focimeter is an instrument that projects an electronically generated image on a screen of it.
- A lensometer is an automated device that is used to interpret the light spread so that it can arrive as a refractive power from the assessed lenses.
When it is a matter of quality, along with the Marco manual lenses, you can also opt for a Swan Pro Manual Lensmeter which is tested by the experts. This is a very popular product among eye experts and is sold throughout the world. In comparison to other such instruments, the Swan Pro Manual Lensmeter is very much accurate. If you are thinking of buying one such lensometer, then you need to search them through the online sites where they are widely available. The availability of the spare parts is also smooth and you don’t need to think of its performance if handled carefully.
The author of this article Wang is a very loyal admirer of the Swan Pro Manual Lensmeter and often talks about it. He himself has wide knowledge about these instruments. He prefers Marco Manual Lensometer too along with the Swan product and keeps all the necessary information regarding them.