The Role of the Eye in Sports Performance - LabO RNP V. EyeMotion Nicolas Marchais

Introduction: Vision for Performance

The role of the eye in sports performance goes far beyond mere visual acuity. This webinar, hosted by Nicolas Marchais from EyeMotion, explores the intricacies of vision and its impact on athletic abilities. Nicolas, a trained orthoptist, guides us through his journey from traditional rehabilitation to visual optimization for elite athletes.

We will discover how often underestimated visual skills can be refined to maximize the relevance of eye movements, information processing, and coordination. Beyond organic issues, the focus is on functionality and optimizing cognitive capabilities related to vision.

Orthoptics: From Rehabilitation to Visual Optimization

The Journey of an Orthoptist Towards Performance

Nicolas Marchais, an orthoptist, began his career in private practice, focusing on the rehabilitation of convergence and amblyopia. His interest later shifted to visually impaired children and those with learning disorders such as dyslexia and dyspraxia, prompting him to return to study and specialize.

The idea of applying rehabilitation principles to sports optimization arose from the observation that orthoptic techniques could push performance beyond standard norms. Thus, EyeMotion, a company developing software programs based on visual exercises, was born. The goal is to improve multiple parameters of vision, not just visual acuity.

Vision: A Complex Set of Skills

Vision is a multifactorial process. Beyond "20/20" on the chart, it encompasses binocular coordination, eye movement control, color and contrast vision, and the ability to process visual information efficiently and effortlessly. These elements are fundamental before considering optimization. It is crucial to ensure that the organic foundation is healthy, in collaboration with ophthalmologists and orthoptists.

The Fundamentals of Vision and Their Impact on Sports

Clarity and Binocular Coordination

For the brain to process visual information correctly, it must be received in the most "honest" way possible. This means seeing clearly with both eyes without excessive effort. Optical correction, if needed, is essential. The coordination of both eyes is also critical, as the brain processes two distinct pieces of information. Eye movement control must be as relevant and efficient as possible to minimize energy consumption.

Beyond the Basics: Colors, Contrasts, and Cognitive Tasks

Other aspects such as color vision and contrasts can significantly influence performance in certain environments (e.g., sunset, low visibility). Solutions like tinted filters can help compensate for these difficulties. The next step involves cognitive tasks, where the aim is to optimize relevant information intake and selective attention.

Rehabilitation vs. Optimization: Defining Areas of Intervention

The Legal Framework and Limitations of the Orthoptist

Rehabilitation of eye dysfunctions (motor control, convergence) strictly falls within the realm of orthoptics. However, prevention and optimization of eye movements for performance are not yet formally included in the traditional competencies of orthoptists. There is a growing need to create a profession of "visual preparator" to fill this gap and regulate these non-rehabilitative practices.

It is essential not to confuse visual training with rehabilitation. A physical trainer, for instance, should not interfere with rehabilitation but rather refer to a healthcare professional in case of doubt to avoid irreversible damage.

The Case of Binocular Disorders (Strabismus)

In cases of strabismus or monocular vision, the brain only processes part of the information, leading to a loss of depth perception (3D). While a high-level athlete may perform with strabismus, it is crucial not to attempt to force binocular vision, as this could trigger permanent double vision. The use of tools such as stroboscopic glasses, while potentially beneficial in certain cases, must be handled with the utmost caution and expertise to avoid any detrimental effects.

Vision and Cognition: An Essential Link

The Example of Learning Disorders

The link between the eye and cognitive processes is illustrated by dyslexia. For a long time, these disorders were solely treated by speech therapists, as they were perceived as phonological. However, studies have revealed a visu-attentional specificity in many dyslexic children. Orthoptic work on visual attention and attention shifts complements this, allowing for better information intake and significant progress in learning to read.

Optimizing Skills for Elite Sports

This same principle is applied to sports optimization. The processes used in rehabilitation to address a deficit are transposed to elevate the brain to a higher level of skills. The goal is to memorize more visual information, use peripheral vision effectively, and control attention selectively. It is not about "looking" more but about "seeing" more relevantly.

Frequently Asked Questions and Clarifications

The Impact of Screens on Visual Performance

Excessive use of smartphones can lead to accommodation problems and excessive attention demands on a restricted visual field. This can harm the athlete's ability to manage a broader and dynamic environment on the field. It is recommended to manage and limit screen time, especially before a competition.

Beyond 20/20: Visual Acuity and Laterality

"20/20" is a subjective standard; the human eye can see up to "20/10". The goal is not only to achieve high acuity but also to balance vision between both eyes to minimize compensatory efforts. Optimizing acuity falls under optical correction (glasses or contact lenses), as training alone cannot improve anatomy. The notion of "ocular laterality," often mentioned on the field (e.g., free throw from the dominant eye side), lacks proven anatomical basis in visual information processing. The focus is on functional work to identify and correct dysfunctions.

Peripheral Vision and Training Tools (EyeMotion, Neurotracker)

EyeMotion offers a training program on various technologies (triple screen, projector, virtual reality) to enhance peripheral information intake, central attention, and eye movement control. Contrary to popular belief, peripheral vision can be trained well beyond what anatomy seems to allow, demonstrating that we often underestimate our capabilities.

Tools like Neurotracker complement EyeMotion. Neurotracker works on trajectory and attention, while EyeMotion focuses on coordination and visual dynamics. The idea is to utilize a range of tools to address different facets of vision, depending on the specific goals of the athlete.

Conclusion: Collaborating for a Holistic Approach to Performance

Visual work must be integrated into a holistic approach to performance. It is essential to ensure the organic health of the eye before undertaking functional work. Collaboration among orthoptists, ophthalmologists, physical trainers, and other healthcare professionals is vital to avoid mistakes and optimize results.

The human body is complex, and the links between the eye, posture, and cognitive processes are close. A better understanding and smooth communication among different disciplines will help unlock the untapped potential of athletes and provide increasingly relevant and effective visual training programs.