Cricket Vision Assessment: Understanding the Visual Demands of Elite Cricket

For a cricketer, seeing clearly is only part of the visual challenge.

A ball can travel at high speed, change direction after pitching and move through very different lighting conditions. At the same time, a player must judge distance, movement and timing while continually shifting attention between near, intermediate and far distances.

This raises an interesting clinical question:

Are the eye examinations traditionally used in everyday practice measuring everything that matters to a cricketer?

At Eye & Laser Surgeons, Dr Daya Sharma & Dr Shanel Sharma have been working with Cricket NSW to explore this question through a programme of detailed cricket vision assessment and comprehensive ophthalmic examination.

Our goal is not to assume that every player has a visual problem or requires treatment. In fact, many will not.

Instead, we want to understand each player’s eyes, visual function and the particular visual demands of cricket in greater detail.

That same philosophy underpins our broader approach to sports vision assessment and athlete eye health: understand the person, understand the eyes and then consider whether any intervention is appropriate.

Why cricket places unusual demands on vision

A conventional eye chart remains an important part of an eye examination. It tells us how clearly someone can identify stationary, high-contrast letters at a defined distance.

Cricket, however, is considerably more dynamic.

A batter may need to detect the line and length of a rapidly moving ball, anticipate bounce and movement, distinguish subtle differences in contrast and respond within a fraction of a second.

A wicketkeeper faces a different visual task. So does a close fielder, boundary fielder or bowler.

In addition, visual conditions can change with the background, glare, shadows, weather and the colour of the ball.

For this reason, sports vision involves more than simply achieving 6/6 visual acuity.

Depending on the individual player, relevant factors may include:

• refractive error
• contrast sensitivity
• binocular vision
• ocular dominance
• focusing ability
• corneal shape and optical quality
• ocular surface and tear-film stability
• retinal and optic-nerve health
• dynamic or kinetic visual function

Not every player requires every investigation.

Rather, the purpose of assessment is to determine which measurements are clinically relevant to the individual athlete.

Our guide to Elite Athlete Eye Health: Comprehensive Ophthalmic Assessment for Sport explains in more detail why athlete eye assessment extends well beyond conventional visual acuity testing.

Eye health matters as much as visual performance

One of the important principles behind our work with athletes is that assessment should not focus only on sporting performance.

An athlete can have excellent central visual acuity and still have an ocular finding that requires monitoring or further investigation.

Therefore, a comprehensive ophthalmic assessment may include examination of the front of the eye, cornea, tear film, retina, macula and optic nerve, together with advanced imaging where clinically appropriate.

This provides two different types of information.

First, it helps us understand how the athlete sees and is there any capacity to enhance the players performance.

Second, it helps us understand whether the structures responsible for vision are healthy.

For professional athletes, establishing baseline measurements can also provide useful information for future comparison.

This is why we see sports vision and athlete eye health as closely related rather than separate disciplines.

Moving beyond the traditional eye chart

The familiar letter chart remains valuable. However, it represents one measurement under one controlled set of conditions.

Sport rarely occurs under controlled conditions.

A player’s vision may be influenced by movement, contrast, changing light, ocular surface quality, binocular interaction and the speed at which visual information needs to be interpreted.

Therefore, our starting question is not simply:

“What prescription does this person have?”

Instead, we ask:

“What does this person’s visual system actually need to do?”

That distinction matters.

Two people may have exactly the same glasses prescription yet use their vision very differently.

One may spend most of the day working at a computer. Another may be a pilot, surgeon or tradesperson. A professional cricketer may need to detect and respond to a rapidly moving target within a fraction of a second.

The prescription may be identical.

The visual demands are not.

This is also why understanding conditions such as myopia and astigmatism involves more than simply recording the strength of a spectacle prescription.

Developing a more detailed cricket vision assessment

The Cricket NSW project has encouraged us to examine how multiple measurements might be considered together rather than interpreted in isolation.

Working with the team from MyopAI, we have been developing technology and assessment methods designed to help organise and interpret different dimensions of visual and ophthalmic information that may be relevant to cricket.

This remains an evolving area.

There is still much we do not know about which visual measurements are most meaningful in different sports and playing positions.

That is precisely why this work is interesting.

Our aim is not to allow software or artificial intelligence to make clinical decisions.

Instead, technology may help us organise complex information, identify patterns and ask better questions.

Clinical judgement remains essential.

Advanced ophthalmic imaging: different technologies answer different questions

A comprehensive athlete eye assessment cannot be reduced to a single test or machine.

Different ophthalmic technologies provide different pieces of information.

For example, corneal topography and corneal mapping can help us understand corneal shape, regularity and optical characteristics.

Optos Ultra-widefield retinal imaging provides clinicians with a broad digital view of the retina.

Optical Coherence Tomography, or OCT, provides detailed cross-sectional information about structures including the retina, macula and optic nerve.

Other investigations may provide information about refraction, ocular surface quality or aspects of visual function.

However, more measurements do not automatically produce better decisions.

The important step is deciding which information matters for that individual athlete and interpreting it within the broader clinical picture.

Our role is to bring those pieces together.

The same principle is central to a comprehensive laser eye surgery assessment, where prescription is only one part of determining whether treatment may be suitable.

A project made possible through collaboration

The breadth of the Cricket NSW vision assessment programme has only been possible through collaboration.

This year’s work brought together Dr Daya Sharma, Dr Shanel Sharma and the Eye & Laser Surgeons team, together with organisations supporting ophthalmic imaging and diagnostic technology, including ZEISS, Optos, Heidelberg Engineering and ParagonCare Vision, Olleyes.

We have also worked alongside the teams from MyopAI and Bondi Laser Eye Centre.

Each group contributes a different part of the project.

Some technologies help us understand the cornea. Others help us assess the retina, optic nerve or broader visual system. Meanwhile, research and data tools may help us explore relationships between different measurements.

Yet the most important part is not any individual machine.

It is how the information is interpreted in the context of the individual player.

Technology supports clinical decision-making. It does not replace it.

What cricket vision can teach us about personalised vision correction

The principles we use when assessing elite athletes are also relevant when someone is considering vision correction.

Two people can have exactly the same prescription and still have very different visual priorities.

A pilot considering vision correction may place particular importance on distance vision, cockpit displays and changing lighting conditions.

A surgeon considering laser vision correction may move constantly between near, intermediate and distance visual tasks.

Tradespeople considering vision correction may work in dust, heat or confined spaces, or in environments where spectacles interact with protective equipment.

Similarly, emergency personnel may need to function in rapidly changing and unpredictable environments.

An athlete considering laser vision correction may have different considerations again, including their sport, training environment, potential for eye trauma and the visual tasks that matter most to them.

This is why our approach to vision correction for work, sport and active lifestyles starts with the person rather than with a procedure.

Does a professional athlete need laser eye surgery?

Not necessarily.

The purpose of detailed assessment is not to find a reason to operate.

Sometimes the most appropriate recommendation may be no treatment at all.

Where refractive correction is useful, options may include glasses or contact lenses.

For suitable adults who would like to reduce their dependence on corrective lenses, procedures such as LASIK, SMILE or PRK may be considered following appropriate assessment.

For some patients, a lens-based option such as an Implantable Collamer Lens, or ICL, may also be considered.

However, there is rarely one procedure that is automatically best for every person.

The appropriate choice may depend on factors such as:

• corneal shape and thickness
• prescription
• tear-film health
• retinal and overall eye health
• type of sport
• potential for eye trauma
• recovery requirements
• age
• visual priorities
• alternatives to surgery

For some people, surgery will not be appropriate.

Our role is to explain the potential benefits, limitations, risks and alternatives so that each person can make an informed decision.

Patients considering treatment can explore these options in our Laser Eye Surgery and Vision Correction Knowledge Centre or compare the principal corneal laser procedures in our detailed guide to LASIK vs SMILE vs PRK.

Why corneal assessment can matter in athletes

The quality of vision depends on more than prescription alone.

The cornea contributes substantially to the eye’s focusing power. Therefore, differences in corneal shape, astigmatism, ocular surface quality and subtle irregularity can influence visual quality.

Detailed corneal topography and tomography allow us to assess corneal shape in considerably greater detail than a spectacle prescription alone.

This may be particularly relevant if an athlete is considering refractive surgery.

It can also help identify conditions such as keratoconus or irregular corneal shape that may change the recommendations we make.

Again, the purpose is not to perform more tests simply for the sake of collecting data.

The purpose is to understand the eye well enough to make an appropriate decision.

What do we hope to learn from the Cricket NSW Vision Project?

Cricket provides an unusual opportunity to study vision because its visual demands are high and may differ according to a player’s role.

Over time, we hope the Cricket NSW Vision Project will help us explore several questions.

Which measurements provide the most useful information?

Do different playing roles place different demands on the visual system?

Can we better understand how contrast, ocular optics, binocular vision, ocular surface quality and eye health interact?

Can assessment distinguish between findings that are clinically meaningful and those that simply represent normal variation?

And are there better ways of understanding sporting vision than relying on conventional static visual acuity alone?

We do not yet have all of those answers.

That is the point.

Good research begins by recognising what we still need to understand.

From elite cricket to everyday vision

Most people will never have to judge a fast-moving cricket ball.

Nevertheless, elite sport highlights something that is relevant to every patient we see.

Vision is personal.

A person’s prescription tells us something important about their eyes, but it does not tell us everything about how they use them.

Lifestyle matters.

Occupation matters.

Eye health matters.

Visual expectations matter.

That is why our Sports Vision Sydney programme considers both visual function and the health of the eyes.

It is also why our Vision Correction for Work, Sport & Active Lifestyles resource explores how different visual environments may influence treatment discussions.

Similarly, our laser eye surgery assessment extends beyond prescription alone to consider corneal measurements, ocular surface health, overall eye health, lifestyle and visual goals.

At Eye & Laser Surgeons, we believe better decisions begin with better understanding.

Whether someone is facing a fast bowler, working at a computer, flying an aircraft, operating in theatre or simply hoping to reduce their dependence on glasses, our starting point remains the same:

Understand the person. Understand their eyes. Then consider the options.

Want to better understand your own vision?

If you would like to understand your eye health, visual function or suitability for vision correction, you can book an appointment with Eye & Laser Surgeons.

Our goal is to explain what we find, discuss the options that may be appropriate and help you make an informed decision about your vision.