Eye Deceases

(H53.0) Amblyopia (Lazy Eye)

Amblyopia Introduction

Amblyopia refers to the eye problem that triggers the loss of vision in one or both of a child’s eyes. Observably, most of the vision-related problems in children are attributed due to the presence of Amblyopia in the eye. If the problem does not get fixed up during the youthful stage, the child’s brain will continue to ignore pictures from the weak eye. As a result, Amblyopia is caused.

ICD-10 H53.0
ICD-9 368.0
DiseasesDB 503
MedlinePlus 001014
eMedicine oph/316
MeSH D000550

Symptoms of Amblyopia

Children under six years of age tend to be the sufferers of Amblyopia. Because of the reduction level in binocular vision or stereopsis, the person is forced to blend the images so as to see them with the both eyes.

The most popular symptoms of Amblyopia are:

  • Poor vision in one or both the eyes
  • Squinting or closing one eye while reading or watching television
  • Tilting the head towards looking at an object
  • Eye strain and headache.

Treatment of Amblyopia

Timely treatment after the confirmation of the diagnosis can help in Amblyopia.

Once the child crosses the age of nine years, it becomes difficult for him/her to treat Amblyopia. In order to have restoration of vision, it is advisable to take treatment before the child enters six years of age. However, the child must have periodical visits to the doctor until the age of 9 or 10.

The two most accepted methods of countering Amblyopia are:

  • Eye drops
  • Glasses

What Causes Amblyopia?

Amblyopia is caused due to the blurred vision of a child. For an instance, children whose eyes are crossed and have worn out eyelids can be assumed to have strabismus (also called “crossed eyes”).  There are four primary reasons of Amblyopia:

  • Dissimilarity in Refractive Error Between the Eyes – In this stage, the condition of one eye is observed to be normal whereas the other one is in myopic state.   
  • Refractive Error –Blurred vision can arise due to an uncorrected refractive error in one or both eyes.  According to a medical study, approximately 5% of children are reported with the occurrence of Amblyopia due to an uncorrected refractive error.
  • Disorderly Eyes -  In this instance, the variation in the alignment of the eyes is such that one eye directs towards straight direction  and the other eye takes the nose direction
  • Deprivation – During the advancement of this stage, both the eyes receive dissimilar information and pictures. It is the most terrible type of Amblyopia which can cause complete blindness to an individual.   

Types of Amblyopia

There exist three categories of Amblyopia:

  • Strabismus - This is the most occurred one wherein the eyes are misaligned.
  • Anisometropia - This occurs when the eyes have incompatible refractory power.
  • Eye Injury - This type of Amblyopia clouds the transmission of the image like the contact lens inside the eye.