What is the difference between strabismus and nystagmus?
Strabismus – a disorder in which the two eyes don’t line up in the same direction. This results in “crossed eyes” or “walleye.” Nystagmus – fast, uncontrollable movements of the eyes, sometimes called “dancing eyes”
What is the difference between strabismus and amblyopia?
Strabismus, or crossed eyes, doesn’t necessarily mean that a patient requires vision correction. They may have 20/20 vision, but just suffer with eye alignment. Amblyopia, on the other hand, occurs when an eye doesn’t have normal visual acuity.
What are three types of strabismus?
Strabismus can be categorized by the direction of the turned or misaligned eye:
- Inward turning (esotropia)
- Outward turning (exotropia)
- Upward turning (hypertropia)
- Downward turning (hypotropia)
What is strabismus Heterotropia?
Strabismus. Other names. Heterotropia, crossed eyes, squint. A person with exotropia, an outward deviated eye.
What does someone with nystagmus see?
If you have nystagmus, your eyes move or “wobble” constantly. This can be in a side to side, an up and down, or a circular motion, or a combination of these. This uncontrolled movement can affect how clearly you can see. Most people with nystagmus have reduced vision.
What neurological disorder causes strabismus?
Strabismus often occurs in children who are otherwise completely normal. However, disorders that affect the brain such as cerebral palsy, Down syndrome, hydrocephalus and brain tumor are more likely to develop strabismus. What adult disorders cause strabismus? Stroke is the leading cause of strabismus in adults.
What neurological issues cause strabismus?
Strabismus that develops in adults can be caused by:
- Botulism.
- Diabetes (causes a condition known as acquired paralytic strabismus)
- Graves disease.
- Guillain-Barré syndrome.
- Injury to the eye.
- Shellfish poisoning.
- Stroke.
- Traumatic brain injury.
What is the difference between heterophoria and Heterotropia?
The difference between heterotropia and heterophoria can be easily understood as follows. With heterotropia, a correcting movement of the eye can be detected already by the simple cover test; with heterophoria, such correcting movement only takes place in the cross-cover test.
What is a Heterotropia?
Heterotropia is an upward deviation of the non-fixing eye. The higher rather than the lower eye is designated. It is far less common than horizontal strabismus and usually, develops after childhood. Congenital causes include anomalies in muscle attachments.