1. Brennan NA, Morgan PB. Reader's Forum: Another view of oxygen transmission. Cont Lens Spectrum. Published December 1, 2005.
2. Brennan N, Morgan P. Clinical highs and lows of Dk/t Pr 1.Optical 2009.
3. Optom Vis Sci. 2004 Dec; 81(12):911-21. Short-term physiologic responce in neophyte subjects fitted with hydrogel and silicone hydrogel contact lenses. Maldonado-Codina C, Morgan PB, Schnider CM, Efron N.
4. Warning: UV-absorbing contact lenses are not substitutes for protective UV-absorbing eyewear, and should be worn in combination with UV-absorbing sunglasses or googles as directed.