Ans: Common eye problems include myopia (nearsightedness), hypermetropia (farsightedness), astigmatism, presbyopia, and cataracts. These issues can often be treated by using corrective lenses to adjust the focal point between the lens and the retina, or by addressing corneal irregularities through methods such as laser surgery or special lenses.
Myopia, often called nearsightedness, means a person can see nearby objects clearly but struggles with distant ones, which appear blurry and uncomfortable to view.
Symptoms:
- Blurry distant vision.
- Difficulty driving, especially at night.
- Headaches due to eye strain.
Correction: To correct myopia, a concave lens of the appropriate power is employed to help focus the image accurately onto the retina.
Hypermetropia, often referred to as farsightedness, is a condition where individuals can see distant objects clearly but struggle with nearby ones, often leading to squinting.
Symptoms:
- Blurry nearby vision.
- Headaches from eye strain.
- Squinting to see clearly.
Correction: To address hypermetropia, spectacles with a converging lens are used to provide extra focusing power, helping form a clear image on the retina.