Presbyopia
When nearby objects become blurry
and eye fatigue sets in
Presbyopia develops when the lens loses elasticity and the ciliary muscle
that controls focus weakens, causing nearby objects to
appear blurry.
With age, the lens stiffens and its refractive flexibility
diminishes,
while weakened ciliary muscles further impair
near vision.

Symptoms of Presbyopia
As the eye's focusing ability weakens,
various visual discomforts may appear in daily life.

Near Vision Decline
Small text on mobile phones, newspapers, and books
appears blurry.

Dim Vision
Symptoms worsen in dimly lit
environments,
and eyes tire easily with a dry, gritty feeling.

Delayed Focus Transition
When switching from looking far away to nearby,
or vice versa, it takes time for focus to adjust.

Headaches and Eye Pain
Forcing the eyes to focus can cause pain around the eyes or headaches as a result.
Stages of Presbyopia
Presbyopia can be broadly divided into
four stages based on the degree of accommodation loss.

Early Presbyopia
Typically appears in the early 40s, with
a noticeable delay in focus transition
when alternating between far and near objects.
Progressive Presbyopia
Around age 45, you may find yourself
holding your phone or book farther away, and near-distance tasks become
practically difficult without reading glasses.
Mature Presbyopia
After the 50s, the lens loses significant elasticity,
and not only near but intermediate distance (computer monitor, etc.) vision also becomes blurry.
Advanced Presbyopia
Mainly occurs in those over 60, where accommodative function is nearly lost and strong correction is essential
for all near-distance activities.
Presbyopia Self-Check
Small daily discomforts may be signs of presbyopia.
Check your eye health with this self-diagnosis.
Dim Vision
When looking at a smartphone or book,
you unconsciously hold it farther away.
Slow Focus Transition
When switching from far to near objects,
it takes time for your eyes to focus.
Eye Fatigue
Near-distance tasks are hard to sustain for more than 10 minutes,
and eyes quickly feel dry or heavy.
Headaches and Eye Pain
After detailed work, the area around the eyes
aches or mild headaches occur.
Vision Changes
As the day progresses, eyes feel dimmer
and blurry vision symptoms worsen.
Daily Inconvenience
Precise tasks like threading a needle
or clipping nails have become harder than before.
Cataract
When the naturally clear lens becomes cloudy and opaque
Cataract is a condition in which the eye's lens loses its transparency and becomes cloudy,
causing vision impairment.
As you age, the proteins that make up the lens
denature and can no longer properly transmit light, resulting in foggy
vision and overlapping images.

Symptoms of Cataract
Cataract may cause a foggy, uncomfortable field of vision
along with various visual discomforts.

Vision Decline
The entire field of vision appears foggy and uncomfortable, as if covered in mist.

Glare
Due to lens opacity,
severe glare is felt when
light enters directly.

Double Vision
Even with one eye, objects appear as two or more overlapping
images, a phenomenon called diplopia.

Day Blindness
Objects are seen better in dark places where the pupil dilates
than in bright daylight or strongly lit environments.
Types and Causes of Cataract
While aging is the most common cause of cataract,
it can also occur due to other factors.

Senile Cataract
The most common form,
caused by denaturation of
lens proteins with aging.
Traumatic Cataract
Occurs when the lens is damaged
by strong impact or a sharp object.
Complicated Cataract
Caused by severe eye diseases like uveitis
or glaucoma, or systemic conditions like diabetes.
Congenital Cataract
Present from birth with lens opacity,
caused by genetic factors or prenatal infections.
Frequently Asked Questions
Gangnam Tokyo Eye Clinic answers your questions about cataracts.
- Q. How is cataract different from presbyopia?
- Q. Can I have cataracts even if my vision isn't bad?
- Q. How often should I get regular check-ups?
- Q. Can cataracts be cured with medication?

