Physiology of Smooth Muscles -Mechanics of contraction and relaxation
Amblyopia (lazy eye)
1. D N Y A N E S H W A R B H A G W A N P O T F O D E
Amblyopia (lazy eye)
2. Defination
Partial or total loss of vision in
one or both eye, in the absence
of any organic disease of
ocular media, retina and
visual pathway.
3. Amblyopia is a vision development
disorder in which an eye fails to achieve
normal visual acuity, even with
prescription eyeglasses or contact lenses.
Amblyopia begins during infancy and early
childhood. In most cases, only one eye is
affected. But in some cases, reduced visual
acuity can occur in both eyes.
4. Type of amblyopia
Strabismus amblyopia
Stimulus deprivation amblyopia
Anisometropic amblyopia
Isoametropia amblyopia
Meridional amblyopia
5. Strabismus amblyopia
Prolong uniocular suppresion in
children with unilateral costant squint
who fixate with normal eye.
6. Stimulus deprivation amblyopia
Develops when one eye is totally excludede from
seeing early in life.
Congenital and traumatic cataract
Complete ptosis
Dense central corneal opacity
8. Anisometropic amblyopia
Occur in higher degree of refractive error than the
fellow eye.
It is more common in aniso-hypermetropic than the
anoso-mypic children.
9. Iso-ametropic amblyopia
It is bilateral amblyopia occurring in children with
bilateral uncorrected high refractive error.
10. Meridionial amblyopia
Its occur in children with uncorrected astigmatic
refractive error.
It is selective amblyopia for specific visual meridian.
11. Risk factor
Factors associated with an increased risk of lazy eye
include:
Premature birth
Small size at birth
Family history of lazy eye
Developmental disabilities
13. Sign and symptomes
An eye that wanders inward or outward
Eyes that appear to not work together
Poor depth perception
Squinting or shutting an eye
Head tilting
Abnormal results of vision screening tests
14. Treatment of amblyopia
Treatment of amblyopia started as early as possible
Yonger the child better prognosis
Occlusion therapy
Remove Opacity in the media
Correct Refractive error