On this page: LASEK vs. LASIK â¢ LASEK vs. PRK â¢ What to expect during and after LASEK surgery â¢ Risks and complications. LASEK eye surgery is a variation of PRK to correct myopia (nearsightedness), hyperopia (farsightedness) and astigmatism. LASEK combines certain methods from both LASIK and PRK. LASIK remains the most popular laser eye surgery, but for people who are not suitable LASIK candidates, PRK or LASEK may be better options and produce comparable outcomes to LASIK.
Sound is actually produced by the pressure changes created when small jets of air pass through moving vocal cords. This is why it can be helpful to think of breath control as the steam engine that makes the machinery of singing function.) A vocal fold. The picture above is a microscopic illustration of the vocal cords.
There's a Message in Your Voice. While speech is how you use words, voice is how you create sound. To your listeners, your voice is a part of who you are and what you believe. Follow these tips on using your voice effectively when you're giving a presentation. Your voice is a bigger and more important part of your presentation than you may think. With your voice, you can mutter, whisper, or shout. You can roar, suggest, demand. You can state, announce, assert, declare, affirm. Use your voice for maximum impact.