Other Problems of the Eye: Apart from the common defects described above, a person may develop other problems that hinder clear vision.
For example, looking at the sun with naked eyes during a solar eclipse can damage the retina.
Cataract: A common problem in old age is cataract, which gradually reduces the amount of light reaching the retina. The crystalline lens of the eye is made of proteins that are arranged in a regular pattern, which makes the lens transparent. When a group of these protein molecules get lumped in a region, it becomes opaque, and we say that a cataract has developed in the region. Gradually the cataract grows, and finally, the whole lens becomes opaque. And as the cataract grows, the ability of the person to see diminishes. To restore vision, the affected lens is surgically removed, and an artificial lens is placed in its place.
Astigmatism : Astigmatism is the most common refractive problem responsible for blurry vision. Anything other than the perfectly round contributes to abnormal connect. When the cornea is oblong shaped, it causes light rays to focus on two different points on the retina, instead of just one.Astigmatism can start in childhood or in adulthood.This defect can be corrected by using cylindrical lens.
Night Blindness. Deficiency of vitamin A contributes to blindness by making the cornea very dry, thus damaging the retina and cornea. Night blindness is the inability to see well at night or in poor light such as in a restaurant or movie theater. It is often associated with an inability to quickly adapt from a well-illuminated to a poorly illuminated environment.
________________ is the inability to see well at night or in poor light such as in a restaurant or movie theater. | |||
Right Option : A | |||
View Explanation |
Cataract is a condition of eye when ______________. | |||
Right Option : D | |||
View Explanation |
Match the entities in column I to column II | |||||||||||||
Right Option : B | |||||||||||||
View Explanation |
Abhyas is a complete education Institute. Here extreme care is taken by teacher with the help of regular exam. Extra classes also conducted by the institute, if the student is weak.
It has a great methodology. Students here can get analysis to their test quickly.We can learn easily through PPTs and the testing methods are good. We know that where we have to practice
Being a parent, I saw my daughter improvement in her studies by seeing a good result in all day to day compititive exam TMO, NSO, IEO etc and as well as studies. I have got a fruitful result from my daughter.
A marvelous experience with Abhyas. I am glad to share that my ward has achieved more than enough at the Ambala ABHYAS centre. Years have passed on and more and more he has gained. May the centre flourish and develop day by day by the grace of God.
It was good as the experience because as we had come here we had been improved in a such envirnment created here.Extra is taught which is beneficial for future.
My experience was very good with Abhyas academy. I am studying here from 6th class and I am satisfied by its results in my life. I improved a lot here ahead of school syllabus.
It was a good experience with Abhyas Academy. I even faced problems in starting but slowly and steadily overcomed. Especially reasoning classes helped me a lot.
One of the best institutes to develope a child interest in studies.Provides SST and English knowledge also unlike other institutes. Teachers are co operative and friendly online tests andPPT develope practical knowledge also.
Abhyas Methodology is very good. It is based on according to student and each child manages accordingly to its properly. Methodology has improved the abilities of students to shine them in future.
About Abhyas metholodology the teachers are very nice and hardworking toward students.The Centre Head Mrs Anu Sethi is also a brilliant teacher.Abhyas has taught me how to overcome problems and has always taken my doubts and suppoeted me.