Table 1.

Habitual lenses of test subjects

Material	Brand name	Manufacturer	n
No lens			3*
Lotrafilcon B	Air Optix Night and Day	Alcon laboratories, Inc (Ft Worth, TX, USA)	2
Balafilcon A	PureVision2	Bausch and Lomb	2
	PureVision Multifocal/HA	Incorporated	2
	PureVision Multifocal/LA	(Rochester, NY, USA)	2
Hilafilcon B	SofLens Daily Disposable		2
Nesofilcon A	Biotrue ONEday		7*

Notes:

^*One subject was a former lens wearer who had reverted to eyeglasses, while another subject wore no lens in one eye and a Biotrue ONEday lens in the contralateral eye. All other subjects wore the same lens in each eye. n = number of eyes.