Evaluation of Astigmatic Contact Lenses

Inclusion criteria

• 1) Healthy adult males or females age ≥18-40 years of age with signed informed consent.

• The subject must appear able and willing to adhere to the instructions set forth in this clinical protocol.

• Subject must be a habitual soft toric contact lens wearer. Habitual wearer is defined as someone who wears contact lenses for at least 6 hours a day, 5 days a week for the past 30 days.

• Subject's vertex corrected spherical component of their distance refraction must be between -1.00 to -4.75 Diopter (D) (inclusive) in each eye.

• Subject's vertex corrected refractive cylinder must be between -0.75 and -1.50 DC (inclusive) in each eye.

• Subject's refractive cylinder axis must be 180±25 and 90±15 in each eye. 7) The subject must have visual acuity best correctable to 20/25 or better for each eye 8) The subject must read and sign the Informed Consent form.

Exclusion criteria

• 1) Women who are pregnant or breastfeeding, 2) Any ocular or systemic allergies or diseases that may contraindicate contact lens wear.

• Any ocular medications use within the last one month. 4) Any systemic disease, autoimmune disease, or use of medication, which may interfere with contact lens wear.

• Any infectious disease (e.g., hepatitis, tuberculosis) or a contagious immunosuppressive disease (e.g., HIV), by self-report.

• Habitual wearer of extended wear contact lenses. 7) Known sensitivity to Revitalens OcuTec® 8) Any previous history of ocular and/or refractive surgery (e.g., radial keratotomy, PRK, LASIK, etc.).

• A clinical finding or history of entropion, ectropion, extrusions, chalazia, recurrent styes, glaucoma, history of recurrent corneal erosions, aphakia, or moderate or above corneal distortion, by self-report.

• History of binocular vision abnormality or strabismus, by self-report. 11) Habitual wearer of rigid gas permeable (RGP) lenses, orthokeratology lenses, or hybrid lenses (e.g. SynergEyes, SoftPerm) within the past 6 months.

• Employee of investigational clinic (e.g., Investigator, Coordinator, Technician).

• Participation in any contact lens or lens care product clinical trial within 14 days prior to study enrollment.

• Clinically significant (grade 3 or higher) corneal edema, corneal vascularization, corneal staining, tarsal abnormalities, bulbar injection or any other abnormalities which would contraindicate contact lens wear.

• Any history of a contact lens-related corneal inflammatory event within the past year that may contraindicate contact lens wear.

• Any active ocular infection. 17) Any corneal distortion resulting from previous hard or rigid gas permeable contact lens wear.

• Any fluctuations in vision due to clinically significant dry eye or other ocular conditions.