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Comment Re:if it doesnt work (Score 1) 464

Do you mean you have a high cylinder? Do you know what brand contact you used? Lenses can rotate due to eye movement so sometimes getting a stable fit can be tricky. A back surface toric will usually stabalize fairly well since the cylinder on the lens is on the back surface and should lock into place with the cylinder on your cornea. There are also different prism ballast designs so it may be worth trying a few different brands. Also, if the cylinder is very high you will have to get a custom lens to get the best correction since most manufacturers won't keep an inventory of very high cylinder lenses.

I'm not sure undercorrecting the astigmatism in your eye would help much. It could be that you have more lenticular astigmatism and not as much corneal astigmatism. In that case, it's possible that lowering the cylinder on the lens to match more closely what's on the cornea might help with stability. Corneal astigmatism is more common however.

Another important thing to consider is the base curve of the lens. Tightening up the base curve may help reduce movement of the lens but if it's too tight, the lens may vault the cornea giving poor results. Best that the doctor consult with the manufacturer on what the best base curve to use for your eye is.

Comment Re:if it doesnt work (Score 1) 464

There are multifocal contacts that are available these days. A multifocal contact has different optical zones that focus a bit differently. For instance a distance center design would have distance in the center zone and then intermediate and near zones moving towards the outside of the lens. A near center design would be of course would have near in the center and then intermediate and distance zones moving outward. Some companies only make distance center designs while others center near but a few will also offer both distance and near center designs in which you would usually place the distance center design in the dominant eye and the near center lens in the non dominant eye. The idea is to get good distance, intermediate, and near vision. Binocularly the goal is to have at least 20/20 vision for distance and near.

Because different companies produce different multifocal designs with different fitting philosophies, it can be tricky finding a doctor who is knowledgeable about fitting a lens that will work for you. Getting multifocals to work right can take more chair time than plain spheres or torics. Since time is money for a lot of eye doctors, there are a number who will refuse to fit these and/or give you a bunch of excuses why they won't work. Multifocal torics are available which help with both presbyopia and astigmatism but those will of course be the trickiest of all to fit as well as being pricey. I know of one brand on the market that is a back surface toric with a front surface multifocal. This can often successfully give presbyopia patients with astigmatism the ability to have good distance, intermediate and near vision.

Another thing to keep in mind is there are stepped multifocal designs as well as aspheric "progressive" multifocal designs. Stepped designs will have set prescriptions for each optical zone of the eye where a progressive design will be a gradual change in prescription going out from the center zone. I personally feel progressive multifocal designs are superior and give better results. Also having the option to have both distance and near center designs can allow more patients with higher add powers to be successfully fit.

Comment Re:Yes, Great... (Score 1) 238

I think the point is that alcohol based sanitizers won't create antibiotic resistant germs. I think that's all we really care about. Antibiotics are what we use to treat infections, we don't care if bacteria become resistant to alcohol or other disinfectant methods.

Comment Re:antibiotic resistance has already been solved (Score 2) 144

Bacteriophages have no ability to infect humans. In fact, they can only infect a specific kind of bacteria; it won't kill other bacteria. Which is really good because if it was so easy for viruses to jump from one species to another, we'd all be dead already. Phage literally means "to eat". Once all the bacteria are dead, their food will be gone and the bacteriophages will die off.

Phages could be very useful as another line of defense against bacteria. I know if I was infected with antibiotic resistant bacteria and was going to die, having more options available would be more than welcome. Not only that but viruses in general are going to be very useful in the future from gene therapy (which might just cure HIV), to attacking cancer cells (talk about swallowing a spider what with chemo and radiation; viruses would be far more targeted and elegant).

Comment Sounds like old news (Score 1) 166

There was a company called Constellation 3D which was developing a product called a fluorescent multilayer disc several years ago. Sounds exactly like what is being described in the article. Basically there were pits with fluorescent dye that could be read with a laser. Seems that there was some sort of scandal related to a "demonstration" they did at COMDEX 2000 in which the demonstration actually played from a hard drive and not from the disc. They went out of business and their website disappeared and I hadn't heard about them for a long time. Now this article pops up seemingly touting the same technology.

"If I do not want others to quote me, I do not speak." -- Phil Wayne