Clinical Evaluation of Two Toric Soft Contact Lenses

The aim of this study is to evaluate the short-term clinical performance of two toric contact lenses when compared to each other after 15 minutes of daily wear each.

Inclusion criteria

• Is between 18 and 40 years of age (inclusive)
• Has had a self-reported visual exam in the last two years.
• Is an adapted soft contact lens wearer.
• Is not a habitual wearer of either study lens.
• Has a contact lens spherical prescription between +5.00 to -9.00 (inclusive) best corrected visual acuity of 20/30 or better in either eye.
• Have contact lens prescription of no less than -0.75D of astigmatism and no more than -2.25D in both eyes.
• Can achieve best corrected spectacle distance visual acuity of 20/25 (0.10 logMAR) or better in each eye.
• Can achieve a distance visual acuity of 20/30 (0.18 logMAR) or better in each eye with the study contact lenses.
• Has clear corneas and no active ocular disease.
• Has read, understood and signed the informed consent letter.
• Patient contact lens refraction should fit within the available parameters of the study lenses.
• Is willing to comply with the wear schedule (at least 5 days per week, >8 hours/day assuming there are no contraindications for doing so).
• Is willing to comply with the visit schedule.

Exclusion criteria

• Has a CL prescription outside the range of the available parameters of the study lenses.
• Has a spectacle cylinder less than -0.75D or more than -2.50D of cylinder in either eye.
• Slit lamp findings that would contraindicate contact lens wear such as:

• Pathological dry eye or associated findings
• Pterygium, pinguecula, or corneal scars within the visual axis
• Neovascularization > 0.75 mm in form of the limbus
• Giant papillary conjuctivitis (GCP) worse than grade 1
• Anterior uveitis or iritis (past or present)
• Seborrheic eczema, seborrheic conjunctivitis
• History of corneal ulcers or fungal infections
• Poor personal hygiene
• Has a known history of corneal hypoesthesia (reduced corneal sensitivity)
• Has aphakia, keratoconus or a highly irregular cornea.
• Has Presbyopia or has dependence on spectacles for near work over the contact lenses.
• Has undergone corneal refractive surgery.
• Is participating in any other type of eye related clinical or research study.