Amblyopia literally means "dullness of vision" (from the Greek amblyos—dull; opia, from the stem ops—vision). However, what does it actually entail? There is dysfunction of the processing of visual information and this dysfunction is usually detected and evident as reduced recognition visual acuity although the abnormalities include many types of visual function (accommodation, ocular motility, spatial perception, or spatial projection). In addition, degradation of the retinal image during a sensitive period of visual development, which historically has been thought to be the ﬁrst 7 years of life, may occur. Most often, clinical ocular examination is entirely normal in amblyopia. Notwithstanding, microscopic anatomical and structural abnormalities have been found in the retina, lateral geniculate bodies, and visual cortex. It can be said for sure that amblyopia never occurs in isolation but rather it is the effect of an underlying problem. (Holmes, 2006)
Symptoms of Amblyopia
- Strabismic eyes
- Uncoordinated eyes (eyes don’t seem to work together)
- Inability to judge depth correctly
- Poor monocular vision
- Poor spatial acuity
- Low sensitivity to contrast
- Reduced sensitivity to motion
- Tendency to bump into objects on one side(medicine plus,2010)
Amblyopes also suffer from problems of binocular vision such as limited stereoscopic depth perception and usually have difficulty seeing the three-dimensional images in hidden stereoscopic displays such as autostereograms. However perception of depth from monocular cues such as size, perspective, and motion parallax is normal.
Caused by an abnormal visual experience early in life, usually from:
Ocular misalignment, Uncorrected refractive error, Disorders that degrade the quality of images transmitted to the brain from the eye.
May occur due to :
squint, stimulus deprivation (e.g. cataracts, ptosis), uncorrected refractive errors ( e.g. hyperopia ), uncorrected anisometropia and uncorrected astigmatism.
Management of Amblyopia
Eliminating any obstacle to vision;
Cataracts Surgery; significant congenital lens opacities must be removed without delay during the first 2-3 months of life.
Correcting refractive error; Optical correction for amblyopic eyes require the full cycloplegic refractive correction. This may be done using either spectacles, contact lenses or surgery.
Occlusion Therapy/ Penalization;
This is done by forcing use of the poorer eye by limiting use of the better eye. Occlusion of the good eye is the most powerful method of treating Amblyopia by forcing use of the amblyopic eye. Occlusion is the gold standard.In non-compliant patients, Atropine may be given to blur the vision in the good eye.
What is @bettervision about?
@bettervision is is a project initiated by @nattybongo and friends to give back to the society the knowledge and skill acquired through the Optometric Studies in Kwame Nkrumah University of Science and Technology, Ghana.It is an outreach system where we visit the less privileged communities to offer free eye screening services and education to the people within the community
AIMS AND OBJECTIVES
To reduce or prevent vision loss through diseases such as glaucoma, cataract and refractive errors.
To enlighten the majority of the Ghanaian population about the importance of proper visual care.
To conscientize people on the need for regular eye checks
To get more people to have their wards screened within the Critical periods of a Child’s Vision Development; thus from ages 3 to till about 10 years.
To help the blind and people with low vision live a better life within the society through education of the general public to stop stigmatization.
To help in the fight of extreme poverty that puts the health of people at risk
Our greatest gratitude goes to @fundition @adollaraday @surfyogi @girlsfoundation @bleepcoin @ackza @indigoocean @nanzo-scoop @steemstem @demotruk @pennsif @steem-ambassador @kasho and @wafrica for helping to make the aims and objectives of @bettervision a reality.