Myopia and Hypermetropia
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- Опубликовано: 13 сен 2023
- Myopia and Hypermetropia
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Myopia and hypermetropia are two common refractive eye conditions that affect a person's ability to see clearly at various distances. They are often referred to as nearsightedness and farsightedness, respectively.
Myopia (Nearsightedness):
Myopia is a refractive error in which a person can see objects clearly up close but has difficulty seeing distant objects clearly. It occurs when the eyeball is too long or the cornea (the clear front surface of the eye) is too steeply curved, causing light entering the eye to focus in front of the retina instead of directly on it.
As a result, distant objects appear blurry while close objects can be seen clearly. Myopia can develop during childhood and often progresses over time, especially in teenagers. It is commonly corrected with eyeglasses or contact lenses that have a concave (minus) lens prescription to help shift the focus of light back onto the retina.
Hypermetropia (Farsightedness):
Hypermetropia is a refractive error in which a person can see distant objects more clearly than nearby objects. It occurs when the eyeball is too short or the cornea is too flat, causing light to focus behind the retina instead of directly on it.
People with hypermetropia may experience blurred vision when looking at things up close, and they may have difficulty with tasks like reading or using a computer without correction. Hypermetropia can affect individuals of all ages and may be more noticeable as they age due to changes in the eye's lens elasticity. It is usually corrected with eyeglasses or contact lenses that have a convex (plus) lens prescription to bring the focal point of light forward onto the retina.
Both myopia and hypermetropia are common vision problems and can often be easily corrected with the appropriate eyeglasses or contact lenses.
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It's known as presbyopia, also called old age hypermetropia (as this defect is commonly observed in elders) and it can be corrected by wearing bi-focal lens.Thank You Sir
bi focal lens is used to correct both myopia and hypermetropia. the upper part of bifocal lens is concave lens and lower part is convex lens
Such type of defect is called presbyopia and its corrected by Bifocal lenses..
Thank you SIR for making our concepts clear 🙏❤
Presbiopia can be corrected by using bi focal lens or concavo convex lens
Legends have exam on monday 😂😂😂
Bi focal lens are used for correction of both myopia and hypermetropia
Hello Sir,
Biconcave and Biconvex lenses r used 4 both defect visions hypermetropia and myopia..thnx.. Respected sir u r videos r suchly too amazing and incredible pls continue uploading like this Videos on other topics also like heart etc and Reproduction etc ..❤😊😊
Sir , can you plz tell me that why did you used the concave lens to diverge the rays of light in the case of hypermetropia?
Thank you sir for all your physics tutorials, they have really changed my grades
Hello sir
Your teaching is really good
I loved all your videos
Bifocal lens is used for person having both myopia and hypermetropia ( presbyopia)
To correct presbyopia we have to use both concave and convex upper part concave lower part convex
Great and easy explanation sir , thanku for this it would obviously help in eaxms .
Sir does the both lenses form image at the far point (myopic eye) and near point(hypermetropoc eye) which acts like object for the eye lens it forms image on retina ?🤔 Pls solve the query 🙏
The condition is called is presbyopia usually seen in old people and they suggested to use bifocal lens
Wow..🙌🙌
Amazing video🤩🤩
Please make more practical videos such as this one
Positive and negative states of the normal dynamic eye.
Depends on your perspective - that might be a mistaken assumption.
Thank you so much,this is going to help me for my exam
If a person have both Myopia and Hypermetropia means they can't able to see nearby and far away object... It is known as Presbyopia... It can be corrected with Bifocal lens ❤
To use both lenses concave and convex
Presbyopia both the concave and convex lens are been used
Fantastic expalnation !
Sir please make a video about power of accomodation I have a lot of confusion
Understood Easily. Thank you Sir
Thanks for informative lesson,
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Wow thanks a lot!!
Sould I wear specs while reading and using mobile? I have myopia i can read book very clearly when it's near me. I can't see only far things.
i love your videos so much i am passing my boards because of you!!! youre the best teacher!!!!!
Thanks a ton!!
Best Explanation ❤🎉
Thank you
You're welcome 😊
We use concavo convex lens is it right answer sir
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It can be corrected by wearing focal lens glasses
Dr I was told by an eye specialist that I have a lazyeye(right eye) and can not be fixed...is it true?
Bifocal or Progressive Lens is used
Can myopia be fixed with eye drops because of recent l went to the eye hospital and l was given systane ultra eye drops and optilyf capsules
Bifocal lenses in used for both myopia and hypermetropia
U are best teacher Thank you so much sir 🙏🙏
Concave lens is used in both conditions
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Hii sir, why u kept biconcave lens front of the parallel rays in hypermetropia 6:48
But, why not u kept the biconcave lens before the parallel rays at the time of myopia 3:01
Please answer my question sir
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Sir , I also have mayopia , is this a very serious disease
very nice!! Thank you sir.
Delay stands for what sir
Sir am requesting for a video on detailed reactions of hydrocarbons.thznkyou
Sir you are God level teacher
A nice presentation.
But normal eyes are not box cameras - that you must assume they are!
6:00 sir why you place concave lens between light rays and convex lens 😢
Bifocal lens is use to fix both myopia and hypermetropia sir
Sir you are a best teacher in the world sir where are you from a diamond teacher
bifocal glasses are used for correction of presbiopia
Epic Video. Awesome way to visualize. Would have helped me too!!
Glad you liked it! Thanks Rohit!
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Hi there
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I have a doubt what happened in the case when people cannot see faraway object and nearby object
Can u teach based on radioactivity sir
If a preson is suffering from both myopia and hypermetropia, so he should use bifocal lens.
Super! Correct answer!!
That's called presbiopia bte
*byopia
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You are favourite teacher
Presbyopia, this defect we see in elders why because this defect comes as age .for this defect we use bi focal length lens
Wonderful
Bifocal lens is used to fix both myopia and hypermetropia
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Sir I am a student of class 9, and I am facing a lot of difficulty in understanding and solving problems on circles. Can you please make a video on corcpes for class 9
There is no normal eye.
You are either myopia, of Hyperopia.
WOW!! Such An Amazing VIDEO!!!
Thank you Sriritwik!! :)
Both concave and convex lens
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Thanks
Good of you sir more grease to you elbow
Thanks a lot sir
You are my favourite sir
Thanks
It's presbyopia and can be corrected by bifocal lens
If both visions are blurry it is called presbyopia they should use bi focal lens
Hii sir ur teaching is class ❤
Thanks a lot
Sir i have a question how can a biofocal lens covnerge and diverge rays
Sorry bifocal
Bi focal lengths
Biconcave lens and biconvex lens
I am one of them, who has both hypermetropia and myopia 😅
Bifocal lenses are used..
In my childhood I had hypermetropia and then I had myopia, and now I have both 🙃
But, thans a ton sir!! For clearing my doubts about this topics.. Very useful video ❤
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Genius teacher
thankyou!!
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Sir, we need a bifocal lense.
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❣️Ask them : 'Who is it that delivers you from dangers in the deep darknesses of the land and the sea, and to whom do you call in humility and in the secrecy of your hearts? To whom do you pray: "If He will but save us from this distress, we shall most certainly be among the thankful?" (6:64) Say: "It is Allah alone Who delivers you from this and from every distress, and yet you associate others with Allah in His divinity."
Sir please explain the full chapter of metallurgy in inter second year please sir
defect = presbiopia
lens = bifocal lens
love your videos sir
Thanks a ton!! Do share our channel with your friends!
Excellent 👌
Thanks a lot 😊
Hii sir, answer is bifocal lens
Super! Right answer!
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We have uploaded few videos of Class 11 already. We will be uploading more videos of Class 11 and 12. Stay tuned :)
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Real vs vertual image plzz explain cant get it
The person suffering from both myopia and hypermetropia is suggested to wear bifocal lens
a person having myopia and hypermetropia has to wear a spectacle, which contains both concave and convex lens i.e., both negative and positive power...
Very good Correct! It's called bifocal lens. Now we also get progressive lens.
Bi Focal lenses
Here before it blows up🎉
Thanks for watching!
Glass with both lens
Super sir
Thank you!
Cylindrical
Ans- both convex and concave lens
presbyopia
❤