Astigmatic Axis
The angle describing the steepest curve of the cornea. Accurate measurement is essential for treating astigmatism during LASIK or cataract surgery.
Acuity (Visual Acuity)
A measure of the clarity or sharpness of your vision, typically assessed using a Snellen chart during an eye exam. It determines how well you can see detail at a given distance.
Accommodation
The eye’s ability to change its focus from distant to near objects by altering the shape of the lens. This function naturally declines with age, leading to presbyopia.
Artificial Lens (IOL)
A synthetic lens implanted in the eye during cataract or lens replacement surgery to restore clear vision. IOLs can be monofocal, multifocal, or toric depending on the patient’s visual needs.
Anterior Chamber
The fluid-filled space between the cornea and iris that helps nourish the eye and maintain pressure. It plays a key role in intraocular pressure regulation and the drainage of aqueous humour.
Amblyopia
Also known as “lazy eye,” this condition occurs when one eye fails to develop proper visual function during childhood. If untreated, the brain may begin to favour the stronger eye, leading to long-term vision impairment.
Astigmatism
Astigmatism is a common vision condition caused by an irregular curve in the cornea or lens, which leads to blurred or distorted sight. It can be corrected with glasses, contact lenses or laser eye surgery depending on suitability.