The correct spark plug and gap is crucial to proper ignition. Spark discharge is a breakdown in the air insulator between the electrode and ground. Yes - air is an insulator, a pretty good one at that. As voltage builds at the electrode, atoms in the air within the air gap gain electrons. This process is called ionization.
It's one of the reasons why our standard lenses are polycarbonate (thinner than standard lenses typically sold by other eyeglasses retailers). At Warby Parker, you can upgrade to high index lenses for an additional $30 whereas it typically costs $60 to $100 more.
It charges about $32 per bottle for generic cromolyn sodium prescription antihistamine eye drops. It charges about $130 per bottle for Patanol prescription brand-name antihistamine eye drops. Or, allergy shots cost about $1,500-$3,900 for the first year, then $720 to $1,800 per year in subsequent years.