A man cannot see objects distinctly at a distance less than 1 metre. He is suffering from

Options

A. old age sight
B. short-sightedness
C. long-sightedness
D. opaqueness of the lens

Answer

To solve the question "A man cannot see objects distinctly at a distance less than 1 metre. He is suffering from," we can follow these steps:

**Step 1: Understand the problem.**
The question states that the man cannot see objects clearly at a distance less than 1 meter. This indicates that there is a limitation in his vision for nearby objects.

**Hint:** Consider what the normal vision range is for a human eye and how this man's vision differs from it.

**Step 2: Identify the normal vision range.**
Normal human vision allows individuals to see objects clearly as close as 25 centimeters, which is known as the near point of the human eye.

**Hint:** Recall the typical near point distance for a healthy human eye.

**Step 3: Compare the man's vision to normal vision.**
Since this man can only see clearly from 1 meter and not closer, his near point has shifted from the normal 25 cm to 1 meter.

**Hint:** Think about what it means when the near point of vision changes.

**Step 4: Determine the condition.**
The inability to see objects clearly at a distance less than 1 meter suggests that he has difficulty focusing on nearby objects. This condition is known as long-sightedness or hyperopia, where the eye can see distant objects clearly but struggles with close ones.

**Hint:** Consider the terms used to describe vision problems related to distance.

**Step 5: Conclusion.**
Thus, the man is suffering from long-sightedness (hyperopia), as he can see far objects clearly but cannot see near objects distinctly.

**Final Answer:** The man is suffering from long-sightedness (hyperopia).

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