A comparative evaluation of a newly marketed multifocal contact lens with a single vision contact lens when used with near vision spectacles. The evaluation was to quantify the difference between the two test corrections.
Study Type
INTERVENTIONAL
Allocation
RANDOMIZED
Purpose
TREATMENT
Masking
NONE
Enrollment
41
contact lens was to be worn a daily wear.
contact lens was to be worn a daily wear with spectacles
Unnamed facility
London, United Kingdom
Distance LogMAR Visual Acuity
Distance time controlled LogMAR (Logarithm of the Minimum Angle of Resolution) Visual Acuity was carried out binocularly, at 4m (meter) under 250 cd/m\^2 and 2.5 cd/m\^2 (candela per square meter) luminance. The test was presented under the two conditions; High luminance (250 cd/m\^2) High Contrast (90%) \& Low Contrast (10%) and Low Luminance (2.5 cd/m\^2) High Contrast (90%)
Time frame: 7 days post wear
Near LogMAR Visual Acuity
Near time controlled LogMAR Visual Acuity was carried out binocularly, at 4cm under 250 cd/m\^2 and 50 cd/m\^2 luminance. The test was presented on under the two conditions; High Luminance (250cd/m\^2) High Contrast (90%) \& Low Contrast (10%) and Low Luminance (50cd/m\^2) High Contrast (90%)
Time frame: 7 days post wear
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