Timothy Coronis ABOC-NCLE

**Timothy Coronis** · 06-26-2009, 01:50 PM

Timothy Coronis ABOC-NCLE is a Certified Technical Speaker for ABO courses and continuing education credits. He is an eyecare professional and educator with 10 years experience in finishing and dispensing of prescription lenses and eyewear, dealing with diverse cross sections of the public, and audiences.

He was employed by Dexton Corporation DBA Dr. Dexter’s Vision Center and Pro Optical for 9 of these years. At Dr. Dexter’s, Timothy trained and mentored high school students as part of an internship program, served as Lab Manager, and created and maintained a spreadsheet for credits on lens returns.

Timothy has spoken at meetings of The New Hampshire Opticians Society, and The New Hampshire Para-Optometric Association, The Opticians Association of Vermont, as well as independent office events.

Timothy can create continuing education lessons tailored to the individual needs and interests of your group or office, upon request.

As an independent technical speaker and author, all education material is presented without brand bias.

Timothy is the author of articles featured in 20/20 Magazine’s Lenses and Technology section:

Contact Lenses and Eyeglasses: Finding Common Ground, March 2008

http://www.2020mag.com/ViewContent/t...1/Default.aspx

Matching Presbyopes with Progressives, July 2007

www.2020mag.com/ViewContent/tabid/136/content_id/1125/Default.aspx

High Index Lenses, and Dispensing Tips, to be published in 20/20 Magazine’s L&T section, 2009

The Power of Suggestion, published in The American Optometric Association’s website in the Para-Optometric section, April 2009

http://www.aoa.org/x4952.xml

ABO Approved courses for continuing education credit include:

- Prism as Foundation of Ophthalmic Lens
- Plus, Minus, and Why
- High Index Lenses: Advantages and Characteristics
- Anti-Reflective Lenses
- Matching Lenses and Frames

Timothy can be reached at TimothyCoronis@hotmail.com or (603) 852 0319

**margrate** · 04-10-2010, 01:05 PM

hello,
thanks for sharing this information i have some more information about Timothy Coronis High-index plastic lenses can greatly improve the eyeglasses you build. Using a high-index lens material—one with an index of refraction ranging from 1.60 to 1.74—can reduce lens thickness and weight, making eyeglasses comfortable and cosmetically appealing. High-index lenses can also be used to improve the fit of lenses in the frame.

Because of the ever-expanding range of high-index lenses on the market, many dispensers are unsure of how choose an appropriate lens for a patient. With so many lens materials and lens treatment combinations available, knowing when to recommend one high-index lens versus another can seem like a numbers game. To win that numbers game, you’ve got to master a few key optical concepts and facts.

Understanding Index of Refraction
Index of Refraction is the speed of light in a vacuum divided by the speed of light in a given material. The resulting number (1.5, 1.6, 1.67, 1.74) is referred to as the “index.” The higher the number, the more light is slowed down or bent. This means high-index lenses bend light at steeper angles than standard-index, hard resin lenses. Therefore, high-index lenses need less curvature to achieve the same focal power. That’s why a lens made from a 1.67-index material can be significantly thinner than a standard-index (1.50) plastic material with the same prescription.
thanks!!
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