A hypermetropic person cannot see nearby objects clearly while he can see distant objects clearly as his near point is more than 25 cm. Therefore, his far point will be infinity(here, sky) , so his eye can easily focus the image of the sky on the retina. So, there is no need to wear spectacles at that time. 

Why a Hypermetropia Person Prefers to Remove Spectacles While Looking at the Sky

Hypermetropia, also known as farsightedness, is a refractive error where distant objects appear clearer than near objects. People with hypermetropia have difficulty focusing on nearby objects, which can cause eyestrain, headaches, and blurred vision. It occurs when the eyeball is shorter than normal or the cornea has a lesser curvature, causing light to focus behind the retina instead of directly on it.

Impact of Hypermetropia on Vision

Hypermetropia affects the way a person sees objects at various distances. It causes light entering the eye to converge at a point behind the retina, resulting in blurred vision for nearby objects. To compensate for this, the eye has to constantly adjust its focus, leading to eye strain and visual discomfort.

Role of Spectacles in Correcting Hypermetropia

To correct hypermetropia, people often wear spectacles with convex lenses. These lenses help in converging light rays towards the retina, thus enabling clear vision. Spectacles act as a refractive medium, altering the path of light entering the eye and allowing it to focus correctly on the retina. Wearing spectacles ensures that the light rays converge on the retina, providing a clear image of both nearby and distant objects.

Removing Spectacles While Looking at the Sky

When a hypermetropic person looks at the sky, they often prefer to remove their spectacles. There are a few reasons for this:

1. Increased Depth of Field: The sky is a distant object, and hypermetropes generally have better vision for distant objects. By removing their spectacles, they allow the light entering their eyes to focus naturally on the retina. This can enhance the depth of field and provide a clearer view of the sky.

2. Less Strain on Accommodation: By removing the spectacles, hypermetropic individuals reduce the need for accommodation in their eyes. Accommodation refers to the ability of the eye to adjust its focus on objects at different distances. Since the sky is already at a significant distance, the eyes do not need to strain to focus on it. This can reduce visual discomfort and eye fatigue.

3. Personal Preference: Some hypermetropes find that looking at the sky without their spectacles provides a more comfortable and enjoyable experience. It may be a personal preference based on their individual vision and comfort levels.

Conclusion

Hypermetropic individuals often prefer to remove their spectacles while looking at the sky to enhance their depth of field, reduce strain on their eyes, and potentially improve their overall visual experience. However, it is important for individuals with hypermetropia to consult with an eye care professional to determine the best course of action for their specific vision needs.