Contacts/glasses Question-why Do I Have To Get Used To Glasses First?

Hi –
I got glasses recently (I’m 13) cuz I have 20/100 in every eye and slight astigmatism. However, I look like a nerd anyway and my friends told me to get contacts NOW cuz you look so nerdy. SO NERDY like really nerdy. My question-I’m responsible, and I’m willing to take care of contacts for as long as it takes/I won’t break them. I don’t have any headaches with glasses. Why are my parents telling me to wear glasses for a while first?

Best Answer To First To Get Them Right?

1. The law of reflection states that the angle of reflection is __________ to the angle of incidence.
A. parallel
B. equal
C. perpendicular
D. inverse
2. A plane mirror always produces a
A. focal point.
B. real image or a virtual image.
C. virtual image.
D. real image.
3. Which type of mirror can produce real or virtual images?
A. Concave
B. Convex
C. Plane
D. Plane and concave
4. Which type of mirror causes light rays to spread out?
A. Concave
B. Convex
C. Plane
D. None
5. What kind of image is produced by a convex mirror?
A. Upright and larger than the object
B. Upside down and larger than the object
C. Upside down and smaller than the object
D. Upright and smaller than the object
6. Reflected rays of light meet at the
A. focal point.
B. mirror surface.
C. optical axis.
D. virtual image.
7. A concave mirror can produce a real image when
A. the mirror is between the object and the focal point.
B. the focal point is between the object and the mirror.
C. the object is between the focal point and the mirror.
D. the focal point is behind the mirror.
8. A concave lens causes parallel light rays to
A. diverge.
B. converge.
C. emerge from the lens at the same angle.
D. completely reflect back into original medium.
9. Which type of lens causes parallel light rays to converge?
A. Concave
B. Convex
C. Fiber optics
D. All of the above
10. What is formed when an object is located between the focal point and a convex lens?
A. A magnified real image
B. A smaller real image
C. A magnified virtual image
D. A smaller virtual image
11. Which condition is necessary for a convex lens to produce a real image?
A. The lens is located between the object and the focal point.
B. The lens is located beyond the object.
C. The object is located between the focal point and the lens.
D. The object is located beyond the focal point.
12. The image formed by a concave lens is always __________ the object.
A. inverted from
B. the same size as
C. smaller than
D. larger than
13. What device controls the amount of light passing through the lens of a modern film camera?
A. Diaphragm
B. Lens
C. Mirror
D. Prism
14. Which instrument uses mirrors and convex lenses to produce images?
A. Camera
B. Microscope
C. Reflecting telescope
D. Refracting telescope
15. What enlarges the image in the eyepiece of a telescope or microscope?
A. A concave lens
B. Two convex lenses
C. A convex lens
D. A mirror
16. Where is the image focused in a camera?
A. Lens
B. Mirror
C. Eyepiece
D. Diaphragm
17. What is the purpose of the mirror in a microscope?
A. To reflect the image toward the eyepiece
B. To provide a light source
C. To focus the image
D. To invert the image
18. Which two instruments produce images in the same way using two convex lenses?
A. Reflecting telescope and microscope
B. Camera and reflecting telescope
C. Microscope and camera
D. Microscope and refracting telescope
19. Which instrument is able to transmit images around corners?
A. Microscope
B. Camera
C. Fiber optics
D. Reflecting microscope
20. The __________ is the opening that lets light rays enter your eye.
A. pupil
B. iris
C. lens
D. retina
21. How do light rays enter your eye?
A. Through the lens
B. Through the iris
C. Through the cornea.
D. Through the pupil
22. What happens after light is collected at the retina?
A. It reflects off of the retina and then passes through the lens
B. It is converted into electrical signals and sent to the brain
C. It is stored there temporarily before being sent to the lens
D. It is channeled through to the iris before passing through the lens
23. How does the lens interact with light rays?
A. It distorts the light by converting it into electrical signals.
B. It allows light rays to first enter the eye.
C. It controls the amount of light that enters the eye.
D. It focuses the light onto cells in the back of the eye.
24. In which situation does the image focus behind the retina?
A. Farsightedness
B. Nearsightedness
C. Normal vision
D. Astigmatism
25. How do glasses or contact lenses correct nearsighted vision?
A. They force the lens in the eye to for the image in front of the retina.
B. They focus the image before the light rays enter the lens of the eye.
C. They spread light rays out a little so the lens in the eye can form the image on the retina.
D. They bend light rays toward each other so the lens in the eye can form the image on the retina.

Getting Contacts For The First Time Tomorrow?

After wearing glasses for a couple years i decided to try out contact lens. I called the eye doctor’s office and they told me to come in for a contact fitting to get them. Is it that simple or what exacly will they do since i had my yearly check up on January. Also, how much will it cost since i have astigmatism on both eyes? any answers will be appreciated. 10pts for best answer

Can Astigmtism First Show Up Around Age 40? How Long Should I Try Out My New Glasses?

I recently got an eye exam from an opthalmologist and my prescription shows astigmatism in both eyes. I have never noticed blurriness or any warped vision previously, and my previous exams with other opticians (including one about 18 months ago) did not show astigmatism.
I got my new glasses today and feel a little like my right eye is looking through a fishbowl. It’s nothing horrible, but it’s a little weird.
Should I give the new glasses a few days? They don’t give me headaches, so that’s not an issue. They don’t make much of a difference in vision from the old glasses (other than astigmatism), but…they look a lot better than the old ones.

First Time For Contacts.. I Have A Lot Of Questions?

I have an appointment Thursday at 4 to get my eyes “fitted” for contacts.
I have astigmatism, and I am nearsighted. I also am prone to allergies, so sometimes my eyes get dry.
What contacts would you suggest? I would like a reasonable price, but good quality. I definitely want either breathable or ones that keep your eyes from drying out.
What is the best contact solution?
How long do you wear them at first before you replace them, if they are disposable?
Do you have to take them out before using eyedrops?
Feel free to be as detailed as possible with your answer, or if you have any tips or advice, please share.

What Brand Of Contacts Is Best For A First Time User Of Contact Lenses?

I have worn glasses before and now I am thinking about wearing contacts along with my new glasses. I am not sure which brand is best. I have an astigmatism. What should I do?

Did Anyone Else Have This Problem When They First Wore Contacts Designed For Astigmatism?

When I went to the eye doctor today, he told me I have astigmatism. He had me put in a pair of contact lenses with my prescription designed to work with astigmatism and told me to try them out for a week. When I first put them in I felt like I could see better already, but as soon as I left I realized that the vision at the very outer corners of my eyes seemed blurry, almost like the contact lenses weren’t covering the entire area that they should…kinda hard to explain. I know I had them in right because he checked them, and I could see perfectly, but something was definitely wrong near the corners of my eyes.
After about 2 hours, my vision looked like it does when my eyes get really dry, but my eyes weren’t dry…I couldn’t read the computer screen well and had to take them out.
I was just wondering if anyone else has had this issue with astigmatism contacts and if it means maybe I’m not able to wear them. I do go back in a week for a follow up so I’ll explain it to him, but was just curious if this was normal.
Thanks!

Is Distorted Vision Normal At First With Toric Contact Lenses?

This is my third time trying contacts because they have never felt right or been really clear. I finally found out that they offer contacts for astigmatism, so this time the contacts feel fine in my eyes but my vision isn’t all that clear. The best way to describe it is like when you go swimming or are crying and your vision isn’t blurry, but a little distorted by light or what not, so you have to blink for a few seconds before things clear up. That’s what it’s like for me. It’s my third day wearing these toric lenses, so I’m wondering if this could get better eventually or if it’s not normal at all. My eye doctor also told me that I could try aspheric lenses, which don’t move around so my vision could be clearer. Any ideas?

Read Details First: Is Astigmatism In Both Eyes Common?

I recently went to the eye docter’s and he told me i had astigmatism in both of my eyes and that i am boardline for needing glasses and that i am far and nearsighted so what does all that mean about the astigmatsim how does astigmatism happen ?

Astigmatism- Should This Be Noted On The First “intermediate” Eye Exam?

My 9 year old ADHD son had his first eye exam on 7/20 and was prescribed glasses. He subsequently failed a routine screening at school and we took him back to the same optometrist, who then diagnosed him with astigmatism but the new RX does not treat the astigmatism. I will get another doctor to examine him soon, but I am wondering if astigmatism can be tricky to diagnose and why the doctor charged me for two exams? It was only two months in between the exams and the prescription changed. We were told he had a growth spurt, and going forward are we going to need to have him examined every two months?

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