Proceedings

The VI International Symposium of Young Optometrists (SIYO 2022) took place from November 14-28 2022 in its usual online format. This conference aims to create a space where young optometry students and optometry practitioners are the protagonists.  This book of proceedings contains the abstracts of the different contributions to the conference. Its contents are organizing in two sections: invited and sponsored oral communication and workshops, and free communication. This last section is divided in oral communications and poster communications, comprising the conference’s different thematic areas. The Organizing Committee thanks all the young and senior researchers that have contributed their work to the conference, the members of the Scientific Commettee for their careful reviews of the works and the different enterprises and accademic or offical entities that have sponsored this event.

El Simposi Internacional de Joves Optometristes pretén crear un espai on participen conjuntament joves estudiants i professionals de l’optometria per a facilitar, a més de la divulgació de les seues investigacions, el contacte i la col·laboració. Aquest llibre recull els resums de les diferents contribucions que es van presentar a la quarta edició, celebrada del 14 al 28 de novembre de 2022 en el seu format habitual en línia. S’organitza en dues seccions que comprenen les diferents àrees temàtiques de les conferències, amb l’objectiu de millorar l’atenció en l’àmbit de l’òptica i l’optometria mitjançant la integració de la investigació en la pràctica sanitària.

ACKNOWLEDGEMENTS

SIXTH INTERNATIONAL SYMPOSIUM OF YOUNG OPTOMETRISTS, SIYO 2022

PREFACE

GUEST LECTURES, SPONSORED TALKS AND WORKSHOPS

Assessing gaze via 3D motion-tracking: agreement with head-mounted eye-tracker

Development of new objective techniques for ocular surface

health assessment aiding early diagnosis of contact lens-related dry eye

The use of strategies to reduce myopia progression by Portuguese optometrists

Optical quality of aspheric intraocular lenses (IOLs)

Research collaboration

New multi-diagnostic platforms and their application in optometric practice

Indo Miopía

Ocular surface evaluations for the detection of dry eye

1.1. ANTERIOR SEGMENT

Anterior ocular segment analysis and correlation between biometric parameters involved in refractive surgery

Considerations when defining keratoconus progression: the role of previous knowledge

Development of a new experimental formula for the approximation of total corneal power in post-LASIK patients

Sectorial corneal asphericity in keratoconus: before and after intrastromal corneal segment ring implantation

1.2. CONTACT LENSES

Decrease of myopic progression rate by orthokeratology: three-year results of a retrospective study

Evaluation of changes induced in the tear film due to computer use, contact lens wear and artificial tears using novel methods

Tear film dynamics with eyelid and contact lens motion for full blinks and half blinks

1.3. INTRAOCULAR LENSES AND REFRACTIVE SURGERY

Comparison of the estimated effective lens position and power lens with SRK/T, Hoffer Q, Holladay I and Haigis formulas in normal eyes

Optical performance of a new trifocal intraocular lens

Validation of a numerical model eye implemented in paraxial ray tracing software (OSLO) for cataract surgery

1.4. OPTICS AND INSTRUMENTATION

The Bebié curve for FDT perimetry

Changes in choroidal and retinal thickness assessed by optical coherence tomography in type 2 diabetes mellitus patients with moderate diabetic retinopathy

Clinical evaluation of the repeatability and variability of ocular aberrometry with different target vergences

Comparison between clinically measured insert versus theoretical and standard value and its importance in progressive addition lens adaptation

Contrast speckle as a retinal tissue integrity biomarker in patients with type 1 diabetes mellitus with no retinopathy

Repeatability of bulbar redness measurements obtained using the Keratograph 5M

Zemax OpticStudio toolbox as a method for visual quality analysis in multifocal contact lenses

1.5. BINOCULAR VISION

Analysis of the Hess Lancaster screen test with eye-tracker

Use of contact lenses in patients with anisometropic amblyopia without strabismus

1.6. REHABILITATION, PERCEPTUAL TRAINING AND VISUAL THERAPY

Fusional vergence dysfunction associated with accommodative insufficiency

NUTRARET: Effect of two-year nutraceutical supplementation on redox status and visual function of patients with retinitis pigmentosa: a randomized, double-blind, placebo-controlled trial

1.7. SPECIAL POPULATIONS

Assessment of saccadic movements in Parkinson’s disease patients using the King-Devick test

Retinal vascular tortuosity in glaucoma and diabetic retinopathy: correlation with vessel diameters

1.8. VISUAL PERCEPTION AND PROCESSING

Analysis of the relationship between subjective measures of the visual function and ocular optical quality parameters in healthy patients

Perceptual scores of image quality at far distance through simulated bifocal corrections: addition and energy balance implications

Visual system and visuomotor skills: review and study proposal

1.9. OTHER OPTOMETRY-RELATED TOPICS

Assessment of reading speed and visual fatigue with different types of controlled lighting

Influence of author’s gender on peer-review timing in vision science publications

POSTER COMMUNICATIONS

2.1. ANTERIOR SEGMENT

Effect on quality of life associated with the state of the ocular surface due to mask use

Changes in the corneal endothelium after cataract surgery

Corneal manifestations in systemic diseases: a case report

Effects of computer use on blinking kinematics

Face mask-associated ocular manifestations during the Covid-19 pandemic: a systematic review

Influence of the use of digital screens on the tear film in frequent computer users

The role of scleral stiffness on corneal biomechanics using finite element analysis

2.2. CONTACT LENSES

Comparison of soft toric contact lenses with and without prism ballast stabilization system

Effects of contact lens wear and computer use on the ocular surface

2.3. INTRAOCULAR LENSES AND REFRACTIVE SURGERY

Advanced biometric calculation: a case series

Analysis of the effects of visual quality under different light conditions with monocular implantation of different intraocular lenses: a pilot study

Calculation formula prediction of intraocular lens in cataract surgery depending on the axial length

Comparison of biometric measurements obtained by two swept source technology based biometers and a corneal tomographer

Corneal epithelial growth after LASIK: a case report

Preoperative refraction prediction after photorefractive keratectomy (PRK)

Visual performance and defocus curve after implantation of a new trifocal intraocular lens

2.4. OPTICS AND INSTRUMENTATION

Anatomical changes in the retinal capillary plexuses assessed by

Optical Coherence Tomography Angiography in type 2 diabetic patients with moderate diabetic retinopathy: descriptive study of a series of cases Choroidal thickness difference with or without the use of the built-in software segmentation modifying tool in swept-source OCT

Comparison of corneal radius and corneal conic constant of both meridians measured with a new eye surface profiler and a Placido-ring videokeratograph

Corneal characterization in diabetes mellitus patients: pilot study

Development of an algorithm to track blinks from a face video

Evaluation of a blue blocker filter using eye-tracking technology

2.5. BINOCULAR VISION

Comparison of horizontal heterophoria values in reading and computer tasks in an adult population

Influence of mobile phone distance on accommodative state

Interexaminer repeatability and agreement in the measurement of ocular heterophoria in children

The DEM test objectively monitored with eye-tracker in young people without binocular dysfunctions

2.6. REHABILITATION, PERCEPTUAL TRAINING AND VISUAL THERAPY

Analysis of two methods of evaluating ocular motility using an eye-tracker

Improvement in fusional vergence amplitudes after a vision therapy protocol for subjects with typical binocular vision

Insufficiency of convergence: a case report

2.7. SPECIAL POPULATIONS

Primary congenital glaucoma: a clinical case

The effect of cataracts on individual biological rhythms

Unilateral adult-onset foveomacular vitelliform dystrophy: a case report

2.8. VISUAL PERCEPTION AND PROCESSING

Color vision in neurodegenerative diseases, bibliographic review

2.9. OTHER OPTOMETRY-RELATED SUBJECTS

Correlation between functional and structural assessments of the retinal macula in healthy young subjects

Effect of power and astigmatism axis on visual acuity

Headache and ametropia

Relationship between the results of the ocular surface disease index and the objective values of the ocular protection index with and without the use of an FFP2 face mask

ReMedy: a mobile application for a better use of medication and contact lenses

2.10. TEACHING INNOVATION

Game-based learning as reinforcement tool in optic and optometry studies

A study of the applicability of the MUC test for teaching purposes using not colorimetrically characterized devices

AUTHOR INDEX