Bilateral myopia: Having two myopic eyes

What does bilateral myopia mean?

Myopia (nearsightedness) is a vision impairment that causes difficulty in focusing on objects and signs that are far away. The condition is common among children and adults and can occur in one or both eyes. When it occurs in both eyes, it is called bilateral myopia.

Although bilateral myopia affects both eyes, the degree of vision prescription for each myopic eye may vary. 

What causes bilateral myopia?

Bilateral myopia occurs when each eyeball is longer than normal, or when the cornea and/or lens is too curved. In rare cases, it can be due to the location of the lens and cornea relative to each other. A combination of these factors can also be responsible for bilateral myopia.

Bilateral myopia is typically detected in childhood, and it is more likely to occur if there is a family history of the condition.