The Tangent Streak rigid gas permeable bifocal contact lens.
Copyright policy )The Tangent Streak rigid gas permeable bifocal contact lens.
An in-office clinical investigation to determine the fitting success rate and frequency and reasons for lens performance failure was conducted, using the Tangent Streak, a new rigid gas permeable bifocal contact lens. The patient population consisted of 34 highly screened presbyopic patients qualifying for a translating bifocal lens. The results revealed nearly 60% of all eyes were fitted successfully with the first lens ordered and an additional 22.4% met success criteria after a second lens order, for a total of 82.1% success. The average number of lenses needed to attain success was calculated to be 1.8 lenses per eye. Analysis of reasons for lens reorder, and frequency and types of lens modification is also summarized, and provides added information regarding the "customized" nature of this specialty lens.
Adult, Male, Contact Lenses, Equipment Design, Presbyopia, Middle Aged, Hydrogel, Polyethylene Glycol Dimethacrylate, Permeability, Polyethylene Glycols, Humans, Female, Gases, Aged
Adult, Male, Contact Lenses, Equipment Design, Presbyopia, Middle Aged, Hydrogel, Polyethylene Glycol Dimethacrylate, Permeability, Polyethylene Glycols, Humans, Female, Gases, Aged
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