Considerations in Contact Lens Use Under Adverse Conditions Proceedings of a Symposium (1991) / Chapter Skim
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Ocular Occupational Health Concerns: Considerations for Pilots wearing Contact Lenses
Ocular Occupational Health Concerns: Considerations for Pilots wearing Contact Lenses
Pages 119-127
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From page 119... ...
THE BAILOUT AND WIND BLAST Gauvreau's (1976) study of free-falljumping parachutists fitted with soft lenses revealed that corneal epithelial punctate staining and temporarily reduced visual acuity resulted when lenses were blown off the eye.
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From page 120... ...
Also, although increased oxygen transmissibility of soft lenses is thought to minimize neovascularization, other factors may play a role, such as trauma or inflammatory response to retained metabolic toxic waste or static exfoliated cells (Josephson et al., 1987~. Increased lens motion may be helpful in preventing vascularization.
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From page 121... ...
The animals were exposed to very hot grit particles. Although both hard and soft contact lenses protected the eye, the authors believed that industrial environments, heavily contaminated with airborne particles, are unsuitable for contact lens wear unless protection is used and the eye is fully sealed from the environment.
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From page 122... ...
simulated chemical accidents to rigid contact lens wearers by instillation of 0.1 milliliters of 5 percent acetic acid, 0.5 percent butylamine, and 50 percent acetone into the eyes of rabbits. The left eye was fitted with a hard contact lens, and the right eye served as a
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From page 123... ...
Eye rubbing with hard lens wear grip could cause the lens to suction onto the ocular surface. With soft contact lenses, a change in tear tonicity can cause the lens to stick to the ocular surface, further complicating a difficult removal situation.
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From page 124... ...
has reported incidents of "toxic occlusion phenomena," and others have anecdotally related cases of contamination of hydrogel contact lenses without immediate obvious effects to the patient, which were thought to cause adverse ocular responses. Gravitational Effects .
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Under experimental conditions, low-humidity conditions (10 percent and 30 percent relative humidity) did not significantly affect visual acuity, refractive error, or corneal curvature in eyes wearing soft lenses and control eyes without contact lenses.
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E., and B.E. Caffery 1987 Case report: progressive corneal vascularization in a patient wearing a silicone elastomer contact lens on an extended wear basis.
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Mandell 1980 Tear pumping and edema with soft contact lenses. Investigative Ophthalmology and Visual Science 19~1 1~:1397-1400.
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