Hyperopia
The eye is an optical natural instrument and an architectural wonder and one of the most remarkable organs in the body. Sometimes, the natural vision of the eye gets affected due to the loss of the accommodation or changes in the structure of the eye. Abnormalities in the normal vision of the eye are called the defects of vision or the defects of the eye. The most commonly observed defects of visions are:
(i) Myopia or shortsightedness or nearsightedness,
(ii) Hyperopia or long-sightedness or farsightedness and
(iii) Astigmatism. Here we discuss the Hyperopia.
Hyperopia
Any person suffering from hyperopia (long sightedness) can see the distant objects clearly, but cannot see the nearby objects clearly. A person suffering from hyperopia, have difficulty in reading books or viewing small object placed at about a distance of 25 cm (least distance of the distinct vision). So, we can say that the hyperopia is the defect due to which the eye is not able to see the nearby objects clearly but can see the distant objects very clearly. Thus, the person suffering from the hyperopia has its near point farther away from the normal near point, which is 25 cm for the normal human eye. In the beginning of the middle age, most of the people lose some accommodation power of their eyes due to the weakening of the cilliary muscles and hardening of the eye lens, so that the result is hyperopia.
Causes of hyperopia and correction of hyperopia
The main reasons of the hyperopia are as follows:
(i) Increase in the focal length of the eye lens, i.e., the eye lens has become convergent.
(ii) Shortening of the eye ball, i.e., the length of the eye ball has decreased.
Understanding Types of Lens is always challenging for me but thanks to all math help websites to help me out.
(i) Myopia or shortsightedness or nearsightedness,
(ii) Hyperopia or long-sightedness or farsightedness and
(iii) Astigmatism. Here we discuss the Hyperopia.
Hyperopia
Any person suffering from hyperopia (long sightedness) can see the distant objects clearly, but cannot see the nearby objects clearly. A person suffering from hyperopia, have difficulty in reading books or viewing small object placed at about a distance of 25 cm (least distance of the distinct vision). So, we can say that the hyperopia is the defect due to which the eye is not able to see the nearby objects clearly but can see the distant objects very clearly. Thus, the person suffering from the hyperopia has its near point farther away from the normal near point, which is 25 cm for the normal human eye. In the beginning of the middle age, most of the people lose some accommodation power of their eyes due to the weakening of the cilliary muscles and hardening of the eye lens, so that the result is hyperopia.
Causes of hyperopia and correction of hyperopia
The main reasons of the hyperopia are as follows:
(i) Increase in the focal length of the eye lens, i.e., the eye lens has become convergent.
(ii) Shortening of the eye ball, i.e., the length of the eye ball has decreased.
Understanding Types of Lens is always challenging for me but thanks to all math help websites to help me out.