A prospective, self-control, double-blind design was conducted in Tianjin. Two hundred participants were assigned to wear two kinds of spectacle glasses. To examine the effect of free-toroidal design and aspherical lens on the subjective visual quality among the myopic population.
A prospective, self-control, double-blind design was conducted in Tianjin. Two hundred participants were assigned to wear two kinds of spectacle glasses. To examine the effect of free-toroidal design and aspherical lens on the subjective visual quality among the myopic population. The subjective visual quality of clarity and comfort were determined using a questionnaire when first wearing the glasses and after 1week.
Study Type
OBSERVATIONAL
Enrollment
200
Participants were asked to wear the new design lenses (the free-toroidal design lenses) for 1 week
Tianjin Eye Hospital
Tianjin, China
The clarity score
The clarity score by a questionnaire,scores on the questionnaire range from 1 to 6, with higher scores being better
Time frame: baseline visit time
The comfort score
The comfort score by a questionnaire,scores on the questionnaire range from 1 to 6, with higher scores being better
Time frame: baseline visit time
Accuracy of foveal and peripheral visual acuity
Accuracy of foveal and peripheral visual acuity was assessed by the eye movement tracking device
Time frame: baseline visit time
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