Presbyopia: Symptoms, Causes And Treatment Options

Key Takeaways

• Presbyopia is the age-related loss of near focus caused by stiffening of the natural lens. It is not a refractive error you are born with.
• It usually begins between 40 and 45. Nearly everyone develops it, including people with lifelong perfect vision.
• The main presbyopia symptoms are blurred near vision, holding reading material further away, needing brighter light, and eye strain or headaches after close work.
• The causes of presbyopia are loss of lens flexibility and weakening of the muscles that change the lens shape.
• Treatment ranges from presbyopia reading glasses and progressive lenses to laser procedures such as PresbyMAX and multifocal lens implants.
• Presbyopia cannot be reversed because the lens does not regain flexibility. It can be corrected.
• See an eye specialist if near vision has changed after 40, or sooner if the change was sudden.

Presbyopia is a natural age-related condition that affects the ability to focus on nearby objects. It typically becomes noticeable around the age of 40 and continues to progress as the eye’s lens loses its flexibility. While presbyopia is a common condition, understanding its causes and how it impacts vision is essential for effective treatment.

What Is Presbyopia?

Presbyopia is a condition where the eye’s lens gradually loses its ability to focus on close-up objects. This typically occurs as people age, and the symptoms of presbyopia can be noticed when reading small print or working on tasks that require close vision. Unlike nearsightedness or farsightedness, presbyopia is related to the ageing process and is a normal part of the eye’s development over time. It is the most common cause of near vision loss worldwide, with around 1.8 billion people affected globally. [1]

Who Gets Presbyopia, And At What Age

What is presbyopia in practical terms? A universal change. Most people first notice presbyopia between 40 and 45, and by 50 to 55 nearly everyone needs some form of near vision correction. 

People who have had excellent vision their whole lives develop it too, which is why it often arrives as a surprise. Never having needed glasses does not protect the lens from stiffening.

In India, where a large share of the population is now moving through their forties, the number of people needing near correction is growing accordingly.

What Causes Presbyopia To Start Early

Most people notice presbyopia in their early to mid-40s; some notice it sooner. The recognised causes of premature presbyopia are:

Hyperopia: Farsightedness means the eye is already working harder to focus at near, so the extra effort of a stiffening lens becomes noticeable earlier. [4]

Diabetes and cardiovascular disease: The lens has no blood supply of its own and draws nutrients from the fluid around it. In diabetes, raised glucose in that fluid alters the lens, reducing its flexibility and bringing the change forward. Cardiovascular disease affects the small blood vessels supplying the rest of the eye. [2]

Multiple sclerosis: Conditions affecting nerve signalling can interfere with the muscles that change the shape of the lens. [4]

Certain medications: Antidepressants, antihistamines and diuretics can reduce the eye’s focusing response as a side effect. If your near vision changed after starting a new medication, mention it to your doctor rather than assuming it is age alone. [2]

Ready-made readers can serve the purpose for uncomplicated presbyopia. Presbyopia appearing before 40, or alongside any of the causes above, is worth an eye examination first, because the underlying reason may be treatable.

Presbyopia Symptoms: Early And Advanced

The symptoms of presbyopia that people notice first are mild and easy to blame on tiredness. They become harder to ignore as the lens continues to stiffen.

Early Signs	Advanced Symptoms
Slight blur when reading small print	Persistent headaches after close work
Holding your phone or a menu further away	Eye fatigue that lasts into the evening
Needing brighter light to read comfortably	Difficulty switching focus from near to distance
Occasional eye strain after close work	Avoiding reading, sewing or detailed tasks
Vision worse at the end of the day	Near vision blurred even in good light

 Presbyopia symptoms are usually worse in dim light, when you are tired, and towards the end of the day. Both eyes are affected, though not always to the same degree. If near vision has changed in one eye only, or changed suddenly rather than gradually, that warrants an eye examination promptly, because presbyopia does not behave that way.

Causes of Presbyopia

The primary cause of presbyopia is the gradual loss of elasticity in the lens of the eye. As we age, the lens, which is responsible for changing shape to focus on objects at varying distances, becomes stiffer and less able to bend. The muscles surrounding the lens, which assist in changing its shape, also weaken with age. This combination of factors leads to the inability to focus on close-up objects and results in blurry near vision.

In addition to the natural aging process, several other factors may contribute to the onset of presbyopia, including genetics, prolonged near-vision work, and underlying health conditions.

Age-Related Changes to the Eye’s Lens

One of the most significant causes of presbyopia is the aging process itself. As individuals age, the proteins within the lens undergo changes that reduce its flexibility. The lens becomes more rigid, preventing it from altering its shape to focus on objects close to the eye. As a result, individuals with presbyopia may find it increasingly difficult to read small text or perform tasks that require close visual detail.

Impact of Muscle Weakness

The muscles responsible for changing the shape of the lens also weaken as people age. This weakening reduces the eye’s ability to focus on nearby objects, which further contributes to the development of presbyopia. While this process happens gradually over time, it can affect an individual’s ability to perform daily tasks that require near vision.

Other Contributing Factors to Presbyopia

Although the ageing process is the most common cause of presbyopia, other factors can contribute to or accelerate its development.

Genetics and Heredity

A person’s genetic makeup can play a role in when they begin to experience symptoms of presbyopia. If an individual’s parents or grandparents experienced presbyopia at an early age, they may also develop the condition earlier. While presbyopia is an unavoidable part of aging, genetics may determine how quickly or slowly the condition progresses.

Prolonged Near-Vision Work

Spending extended periods of time focusing on near objects, such as reading, using a smartphone, or working on a computer, may increase the likelihood of developing presbyopia. However, while such activities can strain the eyes, they do not directly cause presbyopia. Prolonged close-up work may, however, accentuate the symptoms, especially if a person is already predisposed to the condition.

Health Conditions and Medications

Certain health conditions, such as diabetes, can contribute to the development of presbyopia. Medications used to treat these conditions, particularly those that affect the eye’s ability to focus, may also increase the risk of presbyopia.

Symptoms of Presbyopia

The symptoms of presbyopia may develop gradually and often become more noticeable in low-light conditions. Some common symptoms include:

• Difficulty reading small print
• Eye strain when focusing on near objects
• Headaches after prolonged near-vision tasks
• The need to hold reading materials farther away to see clearly

If these symptoms begin to interfere with daily activities, it is important to seek advice from an eye specialist.

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Presbyopia Compared With Other Eye Conditions

The meaning of presbyopia gets confused with conditions that also blur vision. The differences are clear once you know what to look at.

Presbyopia And Hyperopia

	Presbyopia	Hyperopia (Farsightedness)
Cause	The lens stiffens with age	The eyeball is short or the cornea too flat
When it starts	After 40	Usually present from childhood
What blurs	Near vision only	Near vision, and distance too if severe
Does it progress	Yes, until around 60	Usually stable

 

Presbyopia And Myopia

	Presbyopia	Myopia (Nearsightedness)
Cause	The lens stiffens with age	The eyeball is long or the cornea too curved
When it starts	After 40	Usually in childhood or the teens
What blurs	Near vision	Distance vision
Can you have both	Yes. A myopic person can develop presbyopia and may then need bifocals.

 

Presbyopia And Cataract

	Presbyopia	Cataract
What changes	The lens loses flexibility	The lens becomes cloudy
Effect on vision	Near vision blurs	Vision dims and glare increases at all distances
Typical onset	40 to 45	Usually after 60
Treatment	Glasses, or laser and lens procedures	Surgery to replace the lens

 Presbyopia and cataract can occur together, and a lens replacement treats both at once. Which applies to you comes out of an eye examination rather than from the symptoms of presbyopia alone.

How Is Presbyopia Diagnosed?

Presbyopia symptoms are confirmed during a routine comprehensive eye examination. No special test is needed. [4]

• Visual acuity. You read a chart at distance and at near, which establishes where the blur sits.
• Refraction. A series of lenses determines the near addition your eyes need.
• Focusing assessment. Your ophthalmologist measures how well your eyes change focus between distances.
• General eye health check. The examination also looks for cataract, glaucoma and retinal changes, which become more common at the same age.

If near vision has changed and you are over 40, book an eye examination rather than buying readers over the counter. Off-the-shelf glasses carry the same power in both eyes, do not correct astigmatism, and will not pick up a condition that needs treating. Book an eye check-up.

Presbyopia Treatment Options

While presbyopia cannot be prevented, various treatment options can help manage the condition.

Corrective Lenses for Presbyopia

The most common method of treating presbyopia is through the use of corrective lenses, such as reading glasses, bifocals, or progressive lenses. These lenses help adjust the focus for near objects and make everyday activities like reading more comfortable.

Surgical Treatments

For those who prefer a more permanent solution, surgical options such as PresbyLASIK, PresbyMax by Schwind Amaris 1050 LASIK or lens replacement can offer long-term relief from the symptoms of presbyopia. These procedures are designed to improve the eye’s ability to focus on both near and far objects.

Lifestyle Adjustments and Exercises

While lifestyle adjustments alone may not cure presbyopia, certain exercises and habits can help reduce eye strain. For example, regular breaks from close-up work and adjusting lighting can ease discomfort. Eye exercises that strengthen the eye muscles may also be beneficial in managing symptoms, though they will not reverse the condition.

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What Lens Corrects Presbyopia?

The answer to what lens corrects presbyopia depends on what else your eyes need.

• Reading glasses: These are typically used for close-up tasks like reading.
• Bifocal lenses: These lenses have two prescriptions: one for distance vision and one for near vision.
• Progressive lenses: These lenses offer a gradual transition from distance to near vision, providing a more natural experience for individuals with presbyopia.

PRELEX: Presbyopic Lens Exchange

PRELEX (Presbyopic Lens Exchange) is a lens-based vision correction procedure that replaces the eye’s natural lens with an artificial intraocular lens (IOL) to address presbyopia and reduce dependency on reading glasses.

Unlike laser-based refractive procedure, which reshapes the cornea, PRELEX works at the lens level. The choice of IOL depends on your eye health, prescription, lifestyle and visual needs. A comprehensive eye checkup helps determine whether PRELEX is suitable for you and which lens-based correction may be appropriate.

Presbyopia Correction At Planet LASIK

Planet LASIK offers PresbyMAX surgery, performed on the SCHWIND AMARIS 1050RS platform. The laser creates a multifocal corneal profile designed to improve functional vision at near, intermediate and distance. Read more about PresbyMAX.

The appropriate treatment is determined through a pre-operative assessment, including corneal topography, corneal thickness, tear film and dominance testing. Some candidates may be advised to wait until their prescription or ocular surface is stable. Some are directed to a lens-based procedure instead. Book an assessment, find your nearest Planet LASIK centre, or read about our refractive surgeons.

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