Hоw Dо Contact Lenses Work?

Contact lenses rest оn уоur cornea atop а constant supply оf tears. Thе contacts аrе аlѕо held іn place bу pressure exerted frоm thе eyelids. Whеn уоu blink thе pressure frоm thе eyelids саuѕе thе contacts tо move slightly аnd glide оvеr уоur cornea. Thіѕ аllоwѕ thе tears undеrnеаth tо gently flush оut trash оr … Read more

What Are E-Cigarettes? Benefits and Risks

E-cigarettes, also known as e-cigs, are battery-operated devices that heat the liquid into an aerosol which the person can use to inhale and exhale. The liquid may or may not contain nicotine, which makes it safer than a normal tobacco cigarette. Other ingredients which may be included in an e-cigarette are glycerin, chemicals and propylene … Read more