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  2. Amblyopia - Wikipedia

    en.wikipedia.org/wiki/Amblyopia

    Deprivation Amblyopia: This occurs when something obstructs light from entering the eye, preventing proper vision development. A congenital cataract is an example of such a condition. Strabismic Amblyopia: The most common form, this type arises when the eyes are not properly aligned, leading to double vision. To avoid confusion, the brain ...

  3. Farsightedness - Wikipedia

    en.wikipedia.org/wiki/Farsightedness

    Accommodative dysfunction, binocular dysfunction, amblyopia, strabismus [3] Causes: Axial length of eyeball is too short, lens or cornea is flatter than normal, aphakia [2] Risk factors: Ageing, hereditary [2] Diagnostic method: Eye exam: Differential diagnosis: Amblyopia, retrobulbar optic neuropathy, retinitis pigmentosa sine pigmento [4 ...

  4. Refractive error - Wikipedia

    en.wikipedia.org/wiki/Refractive_error

    When refractive errors in children are not treated, the child may be at risk of developing ambylopia, where vision may remain permanently blurry. [33] Because young children typically do not complain of blurry vision, the American Academy of Pediatrics recommends that children have yearly vision screening starting at three years old so that unknown refractive errors or other ophthalmic ...

  5. Anisometropia - Wikipedia

    en.wikipedia.org/wiki/Anisometropia

    Refractive surgery causes only minimal size differences, similar to contact lenses. In a study performed on 53 children who had amblyopia due to anisometropia, surgical correction of the anisometropia followed by strabismus surgery if required led to improved visual acuity and even to stereopsis in many of the children [ 9 ] ( see: Refractive ...

  6. Visual impairment - Wikipedia

    en.wikipedia.org/wiki/Visual_impairment

    Amblyopia: is a category of vision loss or visual impairment that is caused by factors unrelated to refractive errors or coexisting ocular diseases. [59] Amblyopia is the condition when a child's visual systems fail to mature normally because the child either has been born premature, measles, congenital rubella syndrome, vitamin A deficiency ...

  7. Hypertropia - Wikipedia

    en.wikipedia.org/wiki/Hypertropia

    Refractive errors such as hyperopia and anisometropia may be associated abnormalities found in patients with vertical strabismus. The vertical miscoordination between the two eyes may lead to Strabismic amblyopia, (due to deprivation / suppression of the deviating eye) cosmetic defect (most noticed by parents of a young child and in photographs)

  8. Ptosis (eyelid) - Wikipedia

    en.wikipedia.org/wiki/Ptosis_(eyelid)

    Ptosis caused by oculomotor palsy can be unilateral or bilateral, as the subnucleus to the levator muscle is a shared midline structure in the brainstem. In cases where the palsy is caused by the compression of the nerve by a tumor or aneurysm, it is highly likely to result in an abnormal ipsilateral papillary response and a larger pupil.

  9. Emmetropia - Wikipedia

    en.wikipedia.org/wiki/Emmetropia

    Emmetropia is the state of vision in which a faraway object at infinity is in sharp focus with the ciliary muscle [1] in a relaxed state. That condition of the normal eye is achieved when the refractive power of the cornea and eye lens and the axial length of the eye balance out, which focuses rays exactly on the retina, resulting in perfectly sharp distance vision.