dusty or dirty lens with a cleaning cloth or towel could cause scratches, even on lenses with a scratch-resistant coating. Simply put, should you have high index lenses, they’ll be thinner. Conversely, if your prescription glasses are fitted with a lower lens index material, they will be thicker. If you have a solid prescription and…
They give you crisper and more detailed vision, while still protecting your eyes from UVA and UVB rays. The thinnest option available and created for those with the highest prescriptions, 1.74 high index lenses are the optimal choice assuming you have a high prescription. On the downside, polycarbonate isn’t the best choice in order to…
That’s why it’s been eagerly adopted by eyeglass makers around the world. If you’re looking at glasses for astigmatism, here are tips to remember and where you can turn for options. Shopping at your local optometrist’s office also permits you to put on frames before committing to see if they’re comfortable and suit your look….
The soft feature of plastic glasses makes them vunerable to scratching from the sharp object and why scratch-resistant coating is put on form an additional protective layer. Often, optometrists recommend polycarbonate lenses when safety can be an issue. Polycarbonate lenses are 10 times more impact-resistant than ordinary plastic lenses. Thus, the lenses tend to be…
An anti-reflective coating is put on eyeglass lenses to lessen the number of internal and external reflections on a lens. This coating increases the level of light transmitted through the lens, which improves the standard of vision. After hard impact, glass lenses may shatter which explains why polycarbonate lenses are used in safety and sports…
In this medical condition, the image is formed in front of the retina. This means the defect affects the vision and an individual suffering from myopia will see closer objects more clearly than distant ones. Because the eyeball is longer than normal, light cannot focus properly through the lens and cornea. Because of this ,…
He / she diagnoses and treats all eye diseases, performs eye surgery, and prescribes and fits glasses and contact lenses. Apart from a baccalaureate degree and 8 years of added medical training, ophthalmologists are certified and licensed to execute surgery and practice medicine. They can prescribe eyeglasses or contacts to handle a vision problem. They…
Progressive lenses (generally known as no-line bifocals, no-line trifocals or vari-focals) are ever more popular, and preferred over bifocals by most presbyopia patients. Progressives work on the same concept as bifocals, but without the concrete delineation between your prescriptions. Instead of looking and behaving such as a lens wedged within another lens, progressives supply the…
Most SLR camera and lens manufacturers have addressed the concerns of wide-angle lens users by designing lenses with shorter focal lengths, optimized for the DSLR formats. Normally, these lenses are designed to cast an inferior image circle that would not cover a 24×36 mm frame, but is large enough to cover small 16×24 mm sensor…
In these tests, you’re tasked with reading letters from the chart at a specific distance. Every individual has particular genetic, behavioral, and lifestyle factors that donate to how well they are able to see at any moment. Your own vision may also change during the day predicated on these same factors. As we all age,…