Clinical Evaluation of Two Toric Contact Lenses

CooperVision

Status

Completed

Conditions

Astigmatism

Treatments

Device: Lens B

Device: Lens A

Study type

Interventional

Funder types

Industry

Identifiers

NCT05688657

EX-MKTG-137

Details and patient eligibility

About

The study objective was to compare short-term clinical performance data of two toric contact lenses.

Full description

The aim of this non-dispensing fitting study was to evaluate the short-term clinical performance of a monthly toric contact lens when compared to a daily disposable toric contact lens after 15 minutes of daily wear each.

Enrollment

42 patients

Sex

All

Ages

18 to 40 years old

Volunteers

Accepts Healthy Volunteers

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 +4.00 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 -2.25 D 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 information 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 -2.50 D of cylinder in either eye.
Has a history of not achieving comfortable CL wear (5 days per week; > 8 hours/day)
Has contact lens best corrected distance vision worse than 20/25 (0.10 logMAR) in either eye.
Presence of clinically significant (grade 2-4) anterior segment abnormalities
Presence of ocular or systemic disease or need of medications which might interfere with contact lens wear.
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 from of the limbus
Giant papillary conjunctivitis (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.