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Title: Progressive addition lenses
Alternative title / Subtitle: comparison of designs according to the visual fields they provide without astigmatic aberrations for far near and intermediate vision
Authors: Πατέρας, Ευάγγελος (1966-)
Item type: Conference publication
Keywords: Progressive addition lenses;Designs;Power;Optical properties;Πολυεστιακά γυαλιά;Σχέδια;Ισχύς;Οπτικές ιδιότητες
Subjects: Medicine
Issue Date: 14-Feb-2015
Date of availability: 14-Feb-2015
Publisher: Νερατζής, Ηλίας
Σιανούδης, Ιωάννης
Abstract: Objective: In this study the optical behavior of various deigns of progressive addition lenses were measured and analyzed. The goal was to provide information on the various designs of progressive addition lenses in order to enable professional opticians - optometrists to choose from different designs based on individual requirements for each user. Method and materials: The optical properties of 12 different designs of progressive addition lenses having the same power but different design were measured by means of an auto-focimeter. (TOMEY TL-100) specially modified for such specialized measurements. The lenses were fabricated having plano power (0.00 Ds) for distance vision and Addition +2.00 Ds diopters. The magnitude of unwanted astigmatism and the width of clear vision (having ≤ 0.50 Dc of unwanted astigmatism) in the areas of distant, intermediate and near vision were calculated for these designs. Results: The optical characteristics of the designs measured were significantly different. The differences were significant as to the reference sizes and widths of clear vision for far, near and intermediate, the amount of unwanted astigmatism, and the minimum mounting height on the spectacle frame.
Language: English
Citation: Pateras, E.S. (2013). Progressive addition lenses: comparison of designs according to the visual fields they provide without astigmatic aberrations for far near and intermediate vision. "e-Journal of Science & Technology". [Online] 8(5): 57-64. Available from:
Journal: e-Περιοδικό Επιστήμης & Τεχνολογίας
e-Journal of Science & Technology
Type of Journal: With a review process (peer review)
Access scheme: Publicly accessible
License: Αναφορά Δημιουργού-Μη Εμπορική Χρήση-Όχι Παράγωγα Έργα 3.0 Ηνωμένες Πολιτείες
Appears in Collections:Τόμος 08, τεύχος 5 (2013)

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