New Year, new vision, who knew?

I give to you the Hoya Recharge Lens. The potential problems with blue light emitted from our digital devices range from blur to eye fatigue. Filtering that high energy light is technically beneficial and possible. Look into Hoya Recharge EX3 for your next lens if you want to optimize your vision while enjoying your time viewing your phone or tablet. I did and I like them quite well.

Contact Lenses blurry? Let me count the ways.

Credit to our colleagues at www.bausch.com for this photo of a soft contact lens that is coated with fungal organisms.

There are so many reasons that your contact lenses may be blurring your vision, here are some for your consideration:

1. Your prescription is incorrect. Sounds simple enough. I can tell you that the art and science of determining the baseline prescription of a person's visual system is not for the simple minded. It takes serious communication, instrumentation and technique to get this right.

2. The lens is ill-fitting. The best fitting lens requires that the following factors are analyzed and considered: and this is just to name a few...

• corneal diameter
• corneal topography
• eyelid position
• eyelid tension/laxity
• eyelid friction
• tear quantity
• tear quality
• lens diameter
• lens curvature
• lens lubricity
• lens modulus

3. The lens is, for lack of a better term, dirty. Lenses can be coated with oils, mucous, makeup, fingerprints, solution chemicals and probably air born contaminants.

I suppose the next time you experience blurry vision with your contact lenses in place you can start to consider some of the possibilities. Thanks for reading.

See well,
Dr. Greg

National Eye Institue

http://www.nei.nih.gov/

This is the link to the National Eye Institute. It is a very useful site for eye health information, clinical studies, educational programs, research, and all things eye related.

I hope you will bookmark this site in your favorites like I have.

Please come chat with us November 20 on Twitter, I will be there and I hope to learn and contribute to the Healthy Eyes chat. Do join us please.

NEI will be hosting a Twitter Chat on the topic of Healthy Eyes November 20, 2-3 p.m. ET. Join us using hashtag #NEIchat.

New is good...

And new is called for. Here is the before and after if the carpet makeover. Super New Zealand wool is so wonderful!

There's A New Lens In Town

To date prescription eye glasses can be made with glass, plastic, hi-index plastic, polycarbonate and trivex. Before I go into the new lens I will let you know what my take is on the current options.

Glass: AKA Crown Glass. Optical clearity is super, scratch resistance is great, although tempered it will shatter into shards if luck is not on your side, but the real doozy is the weight. This material is heavy. While european and asian opticians will produce ultra thin glass lenses to minimize the wight issue, we are bound by some safety laws that require thicker glass lenses. All in all this lens is filled rarely at best.

Plastic: AKA CR39. Optical clearity is good, scratch resistance is so-so, not shatter-proof but much less likely than glass, will get thick in moderate to high prescriptions. Decent work horse lens.

Hi-Index Plastic: Optical clearity is not the best and the higher the index the worse it gets. The higher the index the thinner it gets. All in all this lens is well tolerated and is recommended with higher prescriptions.

Polycarbonate: The poorest optical clearity, the most impact resistance, the easiest to scratch, fairly light and thin. All in all my least favorite lens other that glass.

Trivex: Best optics, lightest, equal impact resistance to polycarbonate, but not the thinnest. All in all I would choose this lens if thickness was not an issue.

Now from the scientists at PPG Industries, Tribrid.

Think Trivex hybrid Hi-Index: Best optics, lightest, thin but not the thinnest, most impact resistance, also very scratch resistant. All in all I think this will be my new favorite lens.

Here is a link to learn more:http://www.ppg.com/en/newsroom/news/Pages/20130316A.aspx