Squint also known Strabismus is a visual problem in which the eyes to be misaligned and point in different directions. One eye may look straight ahead, while the other eye turns inward, outward, upward, or downward. The eye turn may be consistent, or alternate. It is also known as strabismus

Squint is a common condition among children. It can also occur later in life. It may run in families; however, many people with squint have no relatives with the problem.


Esotropia- inward turning of the eye

Exotropia- outward turning of the eye

Hyperopia- upward turning of the eye

Hypotropia- downward turning of the eye


Inward turning Outward turning

Most squints develop at some time in the first three years of life. Some develop in older children and adults. Squints that develop in children usually have different causes to those that develop in adults.


  • In many cases of childhood squint, the cause is unknown, others may be due to refractive errors-myopia, hyperopia.
  • In some cases of childhood squint (and most cases of adult squint), the squint occurs because of a disorder of the eye, the eye muscles, the brain or the nerves.

Diagnosis and assessment of squint

It is important to diagnose a squint as early as possible. Routine checks to detect eye problems in babies and children are usually done at the newborn examination and at the 6- to 8-week review. There is also a routine preschool or school-entry vision check.


  • Wearing glasses to correct any refractive error, if this is present.

Surgery is often needed to correct the appearance of the squint itself, and may help to restore binocular vision in some cases.