Find more information on Myopia (nearsightedness)

In summary, the conversation discusses the topic of Myopia, or nearsightedness. The speaker is looking for more information on the condition, specifically why light rays focus in front of the retina and if it is genetic. They also mention the relevance of physics in understanding this issue. The responder acknowledges their limited knowledge on the subject and suggests waiting for an expert. They provide a brief overview of the causes of Myopia, including issues with the focusing muscles, neurological input, and the lens itself. They also mention the importance of flexibility in the lens for proper focus. A link to a resource on physics and lenses is also provided.
  • #1
Roxy
52
0
Does anyone know where I can find more information on Myopia (nearsightedness). I want to know why light rays focus in front of the retina and if this is genetic or not. This has to do with physics because of the light and how it moves. I need more detailed but simple information.
 
Physics news on Phys.org
  • #2
I have no idea what level of education you are at, and my knowledge of optics is limited. Consider this a space-saver until an expert shows up.
Long or short sightedness is basically an inability of the lens to reshape itself in the proper way. This can be due to poor condition of the focusing muscles, bad neurological input to those muscles, or a defect of some sort in the lens itself.
Lenses are essentially transparent crystalline protein structures. Anything (such as, alas, advancing age) that alters their flexibility will affect the ability to focus properly.
 
  • #3
Concave and convex.
 

1. What is myopia (nearsightedness)?

Myopia, also known as nearsightedness, is a refractive error where the eye is able to see objects close up clearly, but has difficulty seeing objects in the distance. This is usually caused by the eyeball being too long or the cornea being too curved, resulting in the light focusing in front of the retina instead of directly on it.

2. What are the symptoms of myopia?

The most common symptom of myopia is difficulty seeing objects in the distance, while objects up close may appear clear. Other symptoms may include eyestrain, headaches, and squinting. Children with myopia may also have trouble seeing the board in school or participating in sports that require good distance vision.

3. How is myopia diagnosed?

Myopia can be diagnosed through a comprehensive eye exam by an optometrist or ophthalmologist. This usually involves a visual acuity test, where the patient reads letters from a distance, and a refraction test, where the doctor determines the prescription needed to correct the myopia.

4. Can myopia be prevented?

Myopia is not entirely preventable, but there are steps that can be taken to slow its progression. These include spending more time outdoors, reducing screen time, and taking frequent breaks to rest the eyes. It is also important to have regular eye exams to detect myopia early on.

5. How is myopia treated?

Myopia can be treated with corrective lenses, such as glasses or contact lenses, that help focus light directly on the retina. Laser surgery, such as LASIK, can also be an option for correcting myopia. In some cases, orthokeratology (corneal reshaping) or low-dose atropine eye drops may be prescribed to slow the progression of myopia.

Similar threads

Replies
9
Views
2K
  • Other Physics Topics
Replies
1
Views
2K
Replies
16
Views
2K
  • Other Physics Topics
Replies
13
Views
2K
  • Other Physics Topics
Replies
5
Views
3K
Replies
2
Views
1K
Replies
8
Views
1K
Replies
17
Views
2K
Replies
2
Views
744
Replies
1
Views
1K
Back
Top