Generally cataract patients are 55 years or older.
However, there are cases of younger people having cataracts. For example, a very close family friend had cataract surgery in his late 30’s to remove a cataract.
The American Optometric Association states, ʺA cataract is a cloudy or opaque area in the normally clear lens of the eye.ʺ
Cataract symptoms may include the following:
• Cloudy, blurry or hazy vision
• Frequent prescription changes in your eyeglasses or contact lenses
• Poor night vision or increased difficulty seeing at night
• Increased sensitivity to headlights or sunlight, a halo around headlights
• Colors seem less intense or faded
• Multiple images in one eye or double vision
• Change in the eye's refractive error
Also, there are several types of cataracts according to the NEI. Those types include:
• Congenital cataract
• Radiation cataract
• Secondary cataract
• Traumatic cataract
A congenital cataract affects newborns and young children.
https://www.empowher.com/cataract/content/facts-about-cataracts