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...
Published in: | Eye & Contact Lens: Science & Clinical Practice |
---|---|
Main Authors: | , , , |
Format: | Article in Journal/Newspaper |
Language: | English |
Published: |
2004
|
Subjects: | |
Online Access: | https://research.manchester.ac.uk/en/publications/ff4d97c7-adee-4dcd-af7c-83a46825c2e1 https://doi.org/10.1097/01.ICL.00000118532.90284.09 |
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. |
---|