**Question:** A 35 years old hypermetrope is using 1.50 D sphere both eyes. Whenever his glasses slip downward on his nose he will feel that his near vision:

**Core Concept:**
Hypermetropia, also known as farsightedness, is a refractive error in which light focuses behind the retina, resulting in distant objects being clearly visible but near objects appearing blurry. In the context of this question, a hypermetrope is wearing glasses with a 1.50 D sphere correction for near vision improvement.

**Why the Correct Answer is Right:**
When a person with hypermetropia wears glasses, the lenses are designed to bend (refract) light entering the eye to bring the image onto the retina, allowing for clear vision at near distances. In this case, a 1.50 D sphere correction is provided in both eyes.

**Why Each Wrong Option is Incorrect:**
A) Near vision is not impaired in hypermetropia, but rather distant vision is affected. So, this option is incorrect.
B) Similarly, as hypermetropia affects distant vision, this option is incorrect as well.
C) Although the glasses are present, the downward displacement of the glasses on the nose causes the image to be formed slightly behind the retina, leading to decreased visual acuity for both distant and near objects. This is why this option is incorrect.
D) As explained above, the displacement of glasses disturbs the alignment of the images on the retina, affecting vision for both distant and near objects. This option is incorrect as well.

**Clinical Pearl:**
To avoid this issue, it is essential for the individual to securely fasten their glasses to prevent them from slipping. If the glasses are adjusted correctly, the image will be focused on the retina for clear vision, irrespective of the displacement. This ensures that the patient experiences improved near vision as well as distant vision, not just distant vision as in the wrong options.

**Correct Answer:** D) Near vision will be affected when the glasses slip on the nose due to the disruption of image formation on the retina for both distant and near objects.