Comparison of Senofilcon A Toric Lenses to Balafilcon A Toric Lenses Over Extended Wear Period
| Status: | Completed |
|---|---|
| Conditions: | Ocular |
| Therapuetic Areas: | Ophthalmology |
| Healthy: | No |
| Age Range: | 18 - 45 |
| Updated: | 6/21/2018 |
| Start Date: | June 2007 |
| End Date: | January 2008 |
To evaluate two toric contact lenses on the ocular physiology of existing contact lens
wearers when used in an extended wear modality of days/six nights.
wearers when used in an extended wear modality of days/six nights.
Inclusion Criteria:
- Able to wear study lenses in parameters available
- Non-presbyopes between the ages of 18-45
- Understand and sign informed consent
- Willing to follow the protocol
- Achieve at least 20/30 (6/9) visual acuity (VA) in right eye (OD) and left eye (OS)
with study lenses
- Myopia -0.75 to -6.25, cylinder -0.75 to -1.50 diopters (D) (axis 90 +/- 15, 180 +/-
15) or -1.75 D (axis 90 +/- 10, 180 +/- 10)
- Adapted soft contact lens wearer
- Swims no more than once a week
- Has a wearable pair of spectacles.
Exclusion Criteria:
- Any ocular or systemic disorder which may contraindicate contact lens wear
- Any topical ocular medication
- Aphakic
- Corneal refractive surgery
- Corneal distortion from hard CL wear or keratoconus
- Pregnant or lactating
- Grade 2 or worse slit lamp signs
- Infectious disease
- Previous clinical study within 2 weeks
- Don't agree to participate
- Polymethyl methacrylate (PMMA) or rigid gas-permeable (RGP) lens wear in last 8 weeks
- Previous adverse effects that contraindicate extended lens wear.
- Self-reported symptoms of itchiness or scratchiness with habitual lenses.
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