A study was conducted to test the hypothesis that a more favorable corneal-edema response for hard-to-fit patients might be expected from ultra-thin Bausch & Lomb Soflens® (polymacon) contact lenses than from standard-thickness lenses because of the additional oxygen reportedly available to the cornea. Corneal edema was monitored by measuring changes in corneal thickness over 6 hr of lens wear with an electronic pachometry assembly. Statistical analysis showed significantly less edema for a group of hard-to-fit patients wearing ultra-thin lenses than for a group of successful patients fitted with standard-thickness lenses.
Presented before the Contact Lens Section at the Annual Meeting of the American Academy of Optometry, Portland, Oregon, December 14, 1976. Received December 14, 1977; revised May 1, 1978.
*Optometrist, Manager of Optometric Research.
George W. Mertz
Bausch & Lomb Softens Division
1400 N. Goodman St.
Rochester, New York 14602
© 1978 American Academy of Optometry