Amblyopia refers to a condition where vision in one or both eyes fails to develop normally during
the critical period of visual development, despite no specific structural abnormalities in the eye itself.
It primarily occurs during the developmental stage, typically before the age of 7 or 8.
A key characteristic of amblyopia is that vision does not fully improve even with corrective glasses or contact lenses.
If not detected early, treatment can become extremely difficult once a person reaches adulthood.
Therefore, early diagnosis and intervention are of utmost importance.
Causes of Amblyopia
Strabismic Amblyopia
When one eye is misaligned, the brain suppresses the image from that eye to avoid confusion or double vision.
Continuous suppression hinders the visual development of the affected eye,
ultimately inducing amblyopia.
Refractive Amblyopia
This condition occurs
when severe refractive errors (myopia, hyperopia, or astigmatism) are left uncorrectedduring the critical period of visual development. Because a clear image fails to focus on the cornea and retina,
the visual system does not develop properly.
Deprivation Amblyopia
This condition occurs when physical issues, such as ptosis (droopy eyelid) or corneal opacity,
obstruct the field of vision in one or both eyes. This blockage prevents light and shapes from
accurately reaching the retina, hindering visual development
Treatment for Amblyopia
Wearing Glasses or Contact Lenses
In cases of refractive amblyopia, a precise refraction test is conducted to
prescribe glasses or contact lenses with the appropriate power.
This ensures that a sharp image is focused on the retina to correct the condition.
Surgical Treatment
If the cause is a physical obstruction of the visual field, such as congenital cataracts
or severe ptosis (droopy eyelid), the underlying cause must be removed
through early surgery to enable proper visual development.
Patching Therapy
In this treatment, the stronger eye is covered with an eye patch to force the brain
to use the amblyopic (lazy) eye.
This process stimulates and promotes visual development in the weaker eye.
Treatment should begin and be intensively focused on before the age of 7 to 8, when visual development is completed, and no later than age 9.
It depends on the cause. While some amblyopia can be corrected with glasses alone, most cases require additional treatment.
While some mild cases of amblyopia can be corrected simply by wearing glasses, if corrected vision does not improve even with glasses, additional active treatments such as occlusion therapy must be pursued concurrently.
If performed correctly under the guidance of a specialist, it is extremely rare for vision in the healthy eye to be permanently impaired.
Treatment for amblyopia in the general sense (restoration of visual acuity) is highly limited in effectiveness for adults whose visual development period has ended.
Even if adults undergo vision correction surgeries like LASIK or LASEK, these procedures alter the eye's refraction rather than improving the brain's visual function.
Therefore, it is difficult for vision to improve beyond the best-corrected visual acuity (the maximum vision achievable with glasses) of an amblyopic eye.
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