The purpose of this study is to evaluate the clinical performance, defined as successful fit, of two toric contact lenses (one daily disposable and the other daily wear reusable contact lens to correct astigmatism) in current spherical soft contact lens wearers, contact lens drop-outs, and non-users of toric contact lenses (neophytes).
Study Type
INTERVENTIONAL
Allocation
RANDOMIZED
Purpose
TREATMENT
Masking
NONE
Enrollment
200
Soft toric contact lenses for astigmatism
Soft toric contact lenses for astigmatism
Unnamed facility
Reading, Berkshire, United Kingdom
Unnamed facility
Marlow, Bucks, United Kingdom
Unnamed facility
Broadstone, Dorset, United Kingdom
Overall Success in Fitting With a Toric Contact Lens
Percent of subjects with success with toric lens fitting defined as meeting all of the following pre-determined criteria: 1) acceptable fit, 2) orientation stability less than or equal to 20 degree rotation, 3) binocular visual acuity (VA) within one line of spectacle VA, 4) Good, very good, or excellent overall quality of Vision, and 5) good, very, good, or excellent overall lens comfort. There was not an inferential statistical analysis conducted on this outcome. Comparison was made through the use of 95% CI's for the proportions. Therefore no statistical analysis section is included for this primary outcome.
Time frame: 4 weeks
Distance Visual Acuity
Measured monocularly (each eye separately) in Snellen converted to logMAR units. The logMAR scale has a range of -0.30 to 1.00. A value of 0 or less would not require distance vision correction and a value of 0 or greater may require distance vision correction.
Time frame: after 1 week of toric contact lens wear
Distance Visual Acuity (VA)
Visual Acuity is measured monocularly (each eye separately) in Snellen, the converted to logMAR units. The logMAR scale has a range of -0.30 to 1.00. A value of 0 or less would not require distance vision correction and a value of 0 or greater may require distance vision correction.
Time frame: after 4 weeks of toric contact lens wear
This platform is for informational purposes only and does not constitute medical advice. Always consult a qualified healthcare professional.
Unnamed facility
Portchester, Hampshire, United Kingdom
Unnamed facility
Southsea, Hampshire, United Kingdom
Unnamed facility
St Albans, Herts, United Kingdom
Unnamed facility
Shanklin, Isle Of Wight, United Kingdom
Unnamed facility
Rawtenstall, Lancashire, United Kingdom
Unnamed facility
Hendon, London, United Kingdom
Unnamed facility
Pinner, Middlesex, United Kingdom
...and 8 more locations