| 1)There are many types of lenses and coating. Single vision, Bi-focal, Tri-focal, Progressive, and PC lenses. We will explain best lenses for you to fit your current RX. Hoya Sensity (Photochromic) lenses are trend in CA. It will be darken under the sun and turn to be clear indoors. And also Sensity Dark which darken behind car windshields are very popular. Hoya Sensity eliminates 34% blue light which comes from pc monitor. It will protect your eyes indoor and outdoor.  2) The Index Number represents the lenses' thickness. If the index number is higher, then the lens is thinner. The maximum index number is 1.74. This is nearly 50% thinner than regular plastic lenses. Lately, Aspheric lenses are more popular in higher index ratings. In addition to advantage of having thinner lenses, the main advantage of Aspheric lenses is less distortion.  RX S-6.00 Left 1.67 index, Right 1.50 index 3) Nowadays, 65% of Americans report experiencing symptoms of digital eye strain. 27% of Americans do not know computer eyewear can protect against digital eye strain. New Media Optics "HOYA SYNC" is popular lenses for today's digitally demanding world. HOYA Sync with Recharge AR also eliminate harmful blue light. Please consult our associates for today's technology.  4) We are proud to offer high quality HOYA progressive lenses. When you decide to choose progressive lenses in first time, please be advised by well-known our associates. We will offer free trials of progressive lenses with your RX. You will see the difference easily between single vision lenses and progressive lenses. You can understand how to use it before you purchase. And, we have Intermediate PC lenses with Blue light proteciton. These lenses are the best for PC users.  5) Lens coating continues to be refined and improved upon. Hydrophobic anti-reflective coating is very popular. Most customers select this type of lens because the coating enhances the lens clarity and visibility. Now, HOYA EX4 MEIRYO coating are available in any lens materials. It comes with 2.5 times harder scratch resistant, anti-refrective, repels dust, repels water, no smudges, and 100% UV protection  Recently Blue Light protection is most important for your eyes. Blue light is a part of the visible light spectrum and produce a higher amount energy, which could cause eye damage and the development of age-related macular degeneration. "Blue stop" lens selectively blocks the harmful type of blue light and helps reduce these effects. This lens protects eye against UV exposure indoors and outdoors. Now available in 1.56, 1.59, and 1.67 Hi-index single vision lenses. Photochlomic Blue Stop lenses are available in 1.59 & 1.67 Hi-index. Drive photochromic lenses which is good for night drive and night sports are available in 1.56 index lenses. This lens will turn yellow to dark green under the sun.  Drive photochromic lens  6) Lens Price Single Vision lenses are starting from $50 per pair, Bifocal lenses are starting from $120, and Progressive lenses are starting from $180. The price will vary from Lens thickness, frame's curvature, frame's size, and other options. If you bring your current RX, we will explain about your lenses. Please don't hesitate to ask any questions. We will meet your expectations as close as possible. Now, we are promoting a special package from $98 (including frame & single vision lenses). Blue stop lenses with frame are starting from $188. 7) Frame & Lens Curvature Every single frame & RX lens has a different base curve.  As you see, we will measure Lens base curve precisely by Lens Clock. Left pic has 9.5 base curve. This is mostly used for wrap-around Sunglasses. Most brand frames (center pic) have about 5.5 base curve. Most Asian-fit frames and some brand frames has 4 base curve. This 4 base curve is most suitable lens curve in most RX lenses. 0 base curve is flat surface. Next, lens curve.  We can measure RX lens base curve by Lens Clock. (This pictures shows stock lenses only. Order-made lenses can be made in most base curve. ) Left pic is low miopia power. Lens clock is 5.5 base curve. If you choose higher Index lenses, this curve will be small number. Center pic is Hi-Index 1.60 Spherical lens in -4.00D, Right pic is Hi-Index 1.67 Aspheric lens in same power. You will see there is a big difference between two pics. If you want to choose your favorite frame and lenses, please start to think about frame & lens base curve from now. |