Senile Cataract (Age-related Cataract) - Bệnh Viện Mắt Quốc Tế DND - 128 Bùi Thị Xuân HN
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  • Senile cataract is an age-related, vision-impairing disease characterized by gradual progressive thickening of the lens of the eye. It is the world’s leading cause of treatable blindness.

    A patient with senile cataract often presents with a history of gradual progressive visual deterioration and disturbance in night and near vision. Characteristics of senile cataract include the following:

    • Decreased visual acuity – The most common complaint of patients with senile cataract
    • Glare – Can range from a decrease in contrast sensitivity in brightly lit environments or disabling glare during the day to glare with oncoming headlights at night
    • Myopic shift – The progression of cataracts frequently increases the anteroposterior (AP) axis and therefore the diopteric power of the lens, resulting in a mild to moderate degree of increased myopia or myopic shift
    • Monocular diplopia – At times, the nuclear changes are concentrated in the inner layers of the lens, resulting in a refractile area in the center of the lens, the so called “lens within a lens” phenomenon, which may lead to monocular diplopia that is not correctable with spectacles, prisms, or contact lenses

    Diagnosis can also include the following:

    • Examination of the ocular adnexa and intraocular structures – May provide clues to the patient’s cataract etiology, concomitant disease, and eventual visual prognosis
    • Swinging flashlight test – Detects a Marcus Gunn pupil or a relative afferent pupillary defect (RAPD) indicative of optic nerve lesions or diffuse macular involvement
    • Slit lamp examination – Should concentrate on the evaluation of not only lens opacity but also other ocular structures (eg, conjunctiva, cornea, iris, anterior chamber)
    • Examination of nuclear size and brunescence – After dilation, nuclear size and brunescence as indicators of cataract density can be determined prior to phacoemulsification surgery
    • Direct and indirect ophthalmoscopy – To evaluate the integrity of the posterior pole

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