③ farsighted can be corrected by using lens
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Farsightedness can be corrected by using the converging lens.
- Farsightedness is a common vision defect that makes it difficult to focus on near objects.
- People with severe hyeropia can only focus on objects that are far away, they cannot focus at all.
- It happens when the eyeball or lens is too short, or the cornea is too flat. Also known as long-sightedness or hyperopia.
Symptoms:
- Objects nearby appear blurry.
- The person needs to squint or strain their eyes to see clearly.
- A headache or discomfort occurs during prolonged reading or writing.
- Eyestrain develops, which burns or aches in or around the eyes.
Causes:
- Farsightedness occurs when light is not refracted properly through an uneven, less smooth cornea or lens. It is a type of refractive error.
- Refractive errors can also cause myopia, shortsightedness, and astigmatism.
Corrective lenses:
Most younger people with hyperopia do not need corrective lenses because they can compensate by focusing nearer objects.
PRIMARY TYPES OF CORRECTIVE LENSES:
Eyeglasses: These may include bifocal, trifocal, and standard reading glasses.
Contact lenses: Various types of contact lens are available with differing levels of softness and intended duration of wear.
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