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Updated: Jul 26, 2026
08:28
Development of an In Vitro Ocular Platform to Test Contact Lenses
Published on: April 6, 2016
Parameter consistency in disposable lenses
R E Gundel1, J S Rosen, E N Kaplan
1Contact Lens Research Group, State College of Optometry, State University of New York, New York.
Summary
Johnson & Johnson Acuvue lenses exhibited greater diameter variation and more edge defects than Wesley-Jessen FreshLook lenses, potentially increasing fracture risk. This study highlights manufacturing inconsistencies in disposable contact lenses.
Area of Science:
- Ophthalmology
- Materials Science
- Biomedical Engineering
Background:
- Disposable contact lenses are widely used for vision correction.
- Manufacturing inconsistencies can affect lens performance and patient safety.
- Premature lens fracture is a potential complication of contact lens wear.
Purpose of the Study:
- To evaluate parameter consistency and identify edge defects in two types of disposable contact lenses.
- To assess the potential relationship between these factors and premature lens fracture.
- To compare Johnson & Johnson Acuvue lenses with Wesley-Jessen FreshLook lenses.
Main Methods:
- Measurement of lens diameter and back surface sagittal depth for 50 Acuvue and 50 FreshLook lenses.
- Assessment of center thickness across a range of powers (-0.50 to -4.00 D).
- Visual inspection for edge defects that could compromise lens integrity.
Main Results:
- Acuvue lenses showed greater diameter variation (13.97-14.48 mm) compared to FreshLook (14.30-14.63 mm).
- Acuvue lenses exhibited more significant center thickness variations at low minus powers.
- Edge defects were found in 44% of Acuvue lenses versus 12% of FreshLook lenses.
Conclusions:
- Significant manufacturing variations and a higher prevalence of edge defects in Acuvue lenses suggest a greater risk of premature fracture.
- FreshLook lenses demonstrated better parameter consistency and fewer defects.
- Quality control in disposable contact lens manufacturing is crucial for ensuring lens integrity and patient safety.
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