Related Experiment Video
Updated: Aug 8, 2026
07:56
Sequential Application of Glass Coverslips to Assess the Compressive Stiffness of the Mouse Lens: Strain and Morphometric Analyses
Published on: May 3, 2016
Analysis of a progressive addition lens population
1Department of Vision Sciences, Aston University, Birmingham, UK.
Summary
This study analyzed 98 progressive addition lens (PAL) wearers, finding high success rates in an undergraduate optometric clinic. High questionnaire return rates ensured representative data for PAL patient analysis.
Area of Science:
- Optometry
- Ophthalmology
- Vision Science
Background:
- Progressive addition lenses (PALs) are multifocal lenses designed to correct presbyopia.
- Understanding wearer satisfaction and success rates is crucial for optimizing PAL prescription and patient outcomes.
Purpose of the Study:
- To analyze the characteristics and success rates of patients wearing progressive addition lenses (PALs).
- To evaluate the effectiveness of PALs prescribed at an undergraduate optometric clinic.
Main Methods:
- A cohort of 98 progressive addition lens (PAL) wearers was studied.
- Data collection involved mailed questionnaires and patient record analysis.
- Social survey techniques ensured a high questionnaire return rate (89.9%).
Main Results:
- The study achieved a highly representative sample due to the high return rate.
- Success rates for PAL wear at the undergraduate clinic were determined to be 85.7% or 80.6%, depending on the success criteria used.
Conclusions:
- Progressive addition lenses (PALs) demonstrate significant success rates in clinical settings.
- The findings support the efficacy of PALs for presbyopia correction within an academic optometric clinic environment.
More Related Videos
Related Concept Videos
01:16Focusing of Light in the Eye
Light rays enter the eye through the cornea, a transparent dome-shaped tissue that is the eye's outermost layer. The cornea bends or refracts, light rays traveling to the pupil. The shape of the cornea determines how much of the light is bent and whether the image will be focused correctly on the retina at the back of the eye. Once the light has passed through both refraction layers, it converges into a single focal point onto a small area. This is where photoreceptors start transforming...
01:12Analysis of Population Pharmacokinetic Data
Analysis of population pharmacokinetic data involves studying the behavior of drugs within diverse populations to understand their pharmacokinetic parameters. Traditional pharmacokinetic methods typically involve collecting samples from a few individuals and estimating these parameters. While these methods are commonly used, they have limitations in capturing the variability in drug response among individuals or heterogeneous populations. Population pharmacokinetics is employed to address these...