CONTROL ID: 2911607
SUBMISSION ROLE: Abstract Submission
AUTHORS
1
1
1
AUTHORS (LAST NAME, FIRST NAME): De Gracia, Pablo ; Purrier, Nicole ; Des Rosiers, Chelsea ; Marcell,
1
1
Andrew ; Pashak, Garrett
INSTITUTIONS (ALL):
1. Chicago College of Optometry, Midwestern University, Downers Grove, IL, United States.
Commercial Relationships Disclosure (Abstract): Pablo De Gracia: Commercial Relationship(s);Essilor:Code C
(Consultant) ;AcuFocus:Code C (Consultant) | Nicole Purrier: Commercial Relationship: Code N (No Commercial
Relationship) | Chelsea Des Rosiers: Commercial Relationship: Code N (No Commercial Relationship) | Andrew
Marcell: Commercial Relationship: Code N (No Commercial Relationship) | Garrett Pashak: Commercial Relationship:
Code N (No Commercial Relationship)
Study Group: (none)
ABSTRACT
TITLE: Study of the optical properties of two brands of commercial multifocal contact lenses (steep vs smooth
addition increase) in combination with the higher order aberrations of 65 eyes
ABSTRACT BODY:
Purpose: To evaluate the multifocal properties of two brands of multifocal contact lens designs with opposite
philosophy designs (steep changes vs smooth changes on the addition values across the optical profile) when
interacting with the higher order aberrations persent in 65 healthy eyes.
Methods: The optical profiles of two brands (Air Optix Aqua - Alcon, and Oasys - J&J), three addition values (Low,
Medium, High), and three corrections (-6 D, -3 D, and +1 D) of multifocal contact lenses were measured by using the
NIMO instrument (Lambda-X). Afterwards, these 18 multifocal contact lenses were evaluated on a population of 65
eyes.
In order to do that, we developed an algorithm that converted the power profiles obtained with the NIMO to their
corresponding wavefronts by reconstructing a multifocal wavefront from the power profile. Then, a standard Fourier
procedure was applied to obtain the VSOTF through focus between -1 D and 5 D. Two values were obtained to
compare the optical properties: the area under the through focus VSOTF (normalized by the area obtained for the
monofocal design) and the interval of acceptable quality through focus.
Results: The area under the through focus VSOTF ranges from 0.80 (Oasys L) to 1.1 (AOA H) and the range through
focus varies from 0.93 D (Oasys L) to 2.4 D (AOA H). The contact lenses manufactured by Alcon shift the VSOTF
towards more positive values when the myopic correction increases.
Conclusions: A new method to evaluate the optical profiles of multifocal contact lenses has been presented. Designs
for old presbyopes - AOA H, Oasys H - spread the VSOTF across around 2.5 D through focus. The peak performance
of these designs, however, is lower than the one obtained for lenses that are used by young presbyopes – AOA M and
L, and Oasys M and L. Designs intended for young presbyopes extend the VSOTF only 2 D but do conserve a higher
peak performance (movable by the partial accommodation that young presbyopes still conserve). The Air Optix Aqua
Lenses (with smooth transitions on the addition values on the optical profile) have a higher optical performance than
the Oasys lenses (steep changes). Oasys lenses (Low and Medium addition) have a poorer through focus
performance than a monofocal lens.
Methodolgy used for the evaluation of the Oasys and Air Optix Aqua multifocal contact lenses.
Layman Abstract (optional): Provide a 50-200 word description of your work that non-scientists can understand.
Describe the big picture and the implications of your findings, not the study itself and the associated details.: This
work presents the evaluation of the optical properties of two brands (Air Optix Aqua and Oasys) of commercial
multifocal contact lenses when combined with the optical aberrations of 65 patients. The technical merit of this work
resides on the development of a new mathematical algorithm that makes possible the evaluation of multifocal contact
lenses in combination with the higher order aberrations of a population of patients, what we believe is state of the art.
DETAILS
PRESENTATION TYPE: #1 Paper, #2 Poster
CURRENT REVIEWING CODE: 3320 physiological optics: optical design and models - VI
CURRENT SECTION: Visual Psychophysics/Physiological Optics
Clinical Trial Registration (Abstract): No
Other Registry Site (Abstract): (none)
Registration Number (Abstract): (none)
Date Trial was Registered (MM/DD/YYYY) (Abstract): (none)
Date Trial Began (MM/DD/YYYY) (Abstract): (none)
Grant Support (Abstract): No
Support Detail (Abstract): None
TRAVEL GRANTS and AWARDS APPLICATIONS
AWARDS: ARVO / Alcon Early Career Clinician-Scientist Research Award
AFFIRMATIONS
Affirmations: Affirmation of compliance with ARVO’s Statement for Use of Human Subjects and/or Declaration of
Helsinki.
Affirmations: Affirmation of copyright transfer from each author to ARVO, or certification of public domain abstract.
Affirmations: Affirmation of compliance with ARVO’s Statement for Use of Animals.
Affirmations: Affirmation to reveal essential structure, novel compound elements, or identify new gene compounds.
Affirmations: Affirmation that abstract data/conclusions have not been published; not redundant with other
submissions from same investigators.
Affirmations: Affirmation of compliance with ARVO policy on registering clinical trials.
Affirmations: Affirmation to present same work as abstract submission.
Affirmations: Affirmation to pay Annual Meeting’s full registration fee.
Affirmations: Affirmation that submission of this abstract has been approved by the Principal Investigator.