Presbyopia is a natural, age-related condition that affects the eye's ability to focus on close objects. It typically begins around the...

Astigmatism is a common refractive error that occurs when the cornea or lens of the eye has an irregular shape. Normally, the cornea is...

Hyperopia, commonly known as farsightedness, occurs when the eyeball is too short  or the cornea is too flat , causing light to focus...

What is Myopia? Myopia, or nearsightedness, is a common vision condition where distant objects appear blurry , but near objects remain...

The above illustration demonstrates a case of right esotropia (the inward turning of the right eye). Tropia, also known as strabismus,...

Phoria is a latent (hidden) misalignment of the eyes that occurs intermittently, unlike tropia, where the misalignment is constant. It...

The illustration above shows a common color vision screening test. Colour vision deficiency (CVD) is the inability to distinguish between...

Double vision, or diplopia , occurs when a person sees two images of one object. It can happen in one eye (monocular diplopia) or both...

The illustration above demonstrates one of the perceived effect of aniseikonia — a result of anisometropia. Anisometropia is...

Progressive lenses are a practical and effective solution for people who need vision correction at multiple distances. Unlike bifocals or...