Prescription Lead Glasses | Making Process and the Types
Radiation’s effect on the eyes is a serious concern for professionals who works in radiological facilities. Because your eyes are one of the most sensitive body parts and highly vulnerable to the effects of radiation, it requires proper safety precautions. Leaded glasses are the best solution for protecting the eyes from x-ray radiation.
Previously, people who used prescription glasses were required to use bulky lead goggles or fit over lead glasses. However, nowadays, they can use prescription lead glasses during their working hours in the radiological workplace. In this guide, we will discuss the making process of prescription lead glasses and the major types of them.
How prescription lead glasses are made
When it comes to radiation safety glasses, prescription lead glasses provide a solution for people with eye prescriptions. But how they are made to fit the requirement as required in the prescriptions? Following are the steps-
Step1: First, all the information from your prescription is inputted into a computer to make sure that you get the right specifications. A machine is used to trace the frame to fit the lenses to the frame.
Step2: Since the front side of the lens is already polished, it’s taped to protect it from any scratch during further procedures.
Step3: In this phase, a skilled specialist will use a blocking machine to put the lens on an axis. A metal block will also be attached to the lens so that the lenses fit into each device. This process ensures the axis stays precise according to the prescription.
Step4: Now, the glass lenses are cut precisely, as the prescription required, using a curve generator.
Step5: The lenses are fine-tuned and polished. A scratch-resistant coating is added to the lens by a coating machine. To protect the glasses.
Step6: The coating quality of the lenses is rigorously inspected by trained professionals.
Step7: the lenses are put in a machine to make the edging of the glass. The machine will cool the lens, preventing it from breaking, as well as edge the glass with diamond wheels.
Step8: Now, the lenses are fitted into a frame and checked if it’s assembled properly or not.
Step9: Finally, a skilled professional will inspect and check the glasses, ensuring that the alignment and lenses are properly fitted.
Now, the lead glass is ready for packaging and shipping.
Major types of prescription lead glasses
Before you order a prescription lead glass, it’s important that you know the various types of them. There are 3 major types of them which are described following
In a single vision prescription lens, the same distance correction or magnification is used throughout the whole lens. This type of lens is generally prescribed for people with a condition like astigmatism, hyperopia, and myopia. This lens does not include bifocals or increased power for reading.
In lined bifocal lenses, as its name suggests, there are two distance corrections. One is for the distance correction, which is in the top portions. And the other is for the near or reading correction, which is provided on the bottom of the lens.
Patients who have trouble seeing both far and close need bifocal prescriptions.
Progressive prescriptions have both distance correction on the top of the lens and near correction on the bottom. The two sections are divided by a corridor that gradually raises the reading or near prescription power as you gaze down the lens, giving you an intermediate correction between distance and near correction. For that reason, seeing through a progressive bifocal lens feels more natural. As there is no line between the two-focus options, the bifocal nature is not visible.
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