This article is more than 5 years old. Information may no longer be current.
Patients report more comfort, tolerability with personalized PALs
Click Here to Manage Email Alerts
Eighty-two percent of subjects chose personalized progressive-addition lenses as their favorite over conventional PALs, in a double-blind study of 51 subjects.
The researchers customized the positions and sizes of viewing zones and the softness of gradients of mean power and astigmatism of personalized PALs to individual viewing preferences.
Researchers used subjective ratings and experimental measurements to study viewing zone widths, blur gradient smoothness, amount of distortion, the feeling of safety during motion and overall wearing comfort.
Personalized lenses had similar experimentally measured viewing zone widths, according to researchers.
The median ratings for both the personalized and conventional PALs showed agreement or full agreement with all statements and indicated that the subjects were generally satisfied with both spectacle types, they wrote.
Personalized lenses were reported to be significantly better suited for walking in a building and were rated as having better overall comfort and adaptation, the researchers reported. They were also rated significantly more comfortable than conventional lenses in both interviews.
“The observed perception of lens design variation should be regarded as a prerequisite for the customization of progressive-addition lenses to wearing preferences,” the researchers wrote.
Disclosure: Forkel received an expense allowance from Rodenstock. Please see the full study for all remaining authors’ financial disclosures.
Click Here to Manage Email Alerts