Hydrogel contact lens dehydration in controlled environmental conditions

Purpose: To ascertain the impact of environmental conditions on hydrogel contact lens dehydration. Methods: Six young adult subjects wore an ACUVUE lens in one eye and a Proclear lens in the other eye for 200 minute sessions in arid, temperate, and arctic conditions, maintained in a purpose-built en...

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Bibliographic Details
Published in:Eye & Contact Lens: Science & Clinical Practice
Main Authors: Morgan, Philip B., Efron, Nathan, Morgan, Sarah L., Little, Simon A.
Format: Article in Journal/Newspaper
Language:English
Published: 2004
Subjects:
Comfort
Dehydration
Environment
Humidity
Hydrogel contact lens
Soft contact lens
Temperature
Water content
Arctic
Online Access:https://research.manchester.ac.uk/en/publications/ff4d97c7-adee-4dcd-af7c-83a46825c2e1
https://doi.org/10.1097/01.ICL.00000118532.90284.09
Description
Summary:Purpose: To ascertain the impact of environmental conditions on hydrogel contact lens dehydration. Methods: Six young adult subjects wore an ACUVUE lens in one eye and a Proclear lens in the other eye for 200 minute sessions in arid, temperate, and arctic conditions, maintained in a purpose-built environmental chamber in an aerospace medical facility. Dehydration was determined by measuring lens water content before and after each session using a soft contact lens refractometer. Comfort of the lenses was assessed at the conclusion of each session. Results: Lens dehydration was similar for the three environmental conditions (F2 = 0.3, P = 0.75). There was less dehydration with the Proclear lens compared with ACUVUE lens (F1 = 43.0, P = 0.001). No differences were detected with respect to lens comfort between the three environmental conditions (F2 = 2.0, P = 0.18) or the two lens types (F1 = 1.4, P = 0.29). Conclusion: Soft contact lens dehydration is unaffected by environmental extremes. © 2004 Contact Lens Association of Ophthalmologists, Inc.

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