Advance For Astigmatism » Right

I Have Corneal Astigmatisms Of -.75 In The Right Eye And -1.75 In The Left.?

admin — Tue, 23 Feb 2010 04:45:35 +0000

Can Lasik fix them and give me perfect vision?
I am 24 and believe my eyes are done changing. I have had the same eye prescription for a year now.

I Need Help Right Now!!! Pleeease Help Me!!! It Has To Do With My Eye Vision!! Emergency!!?

admin — Sat, 13 Feb 2010 16:43:00 +0000

ok, sorry about the caps i just REALLY need help. ok so heres my problem:
all day today, my contact has been killin my eye. It hurt, and burned and stung. so a few minutes ago i went to the restroom and took it out
i found a rip right in the middle of it. heres the real problem besides that
that was my last right contact. now i only have the left one i’m wearing today and one more left one. heres the other problem. i have an astigmatism in my left eye and i can’t exactly go buy another pair becasue they’re $80 and i don’t have that kinda money to spend right now
what should i do?
i still have that other left contact, but…??
PLEASE HELP ME!!

Why Aren’t My Ckntact Lenses Labeled Right Or Left?

admin — Fri, 12 Feb 2010 17:02:02 +0000

So i switched from astigmatism contact lenses to acvue oasys but when i got this new box they weren’t labeled and i only nticed now. They’re the boxed disposable kind that u change every 2-3 weeks. I just want to knw if it doesn’t matter anymore with non-astigmatism contact lenses or otherwise how do i find out which is which. I member the doctor said my eye was getting better and that the astigmatism was pretty much neglible.

My Right Eye Hurts Really Bad…please Help?

admin — Sun, 17 Jan 2010 10:40:24 +0000

I have really bad astigmatism….and a few months back I got glasses.I couldn’t get contacts because my eyes are too small,and my eye doctor won’t let me use smaller lenses because the astigmatism is really bad.I wore the glasses every now and then,but I lost them about a month or two ago. I squint a lot…I have an appointment with the eye doctor next month….But I am feeling brief stabs of pain in my right eye.Is this just because I haven’t worn any glasses?? Am I in immediate need right now of glasses??

Best Answer To First To Get Them Right?

admin — Sat, 09 Jan 2010 23:09:56 +0000

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.

I Just Got Some New Glasses, And They Are Slightly Blurry In The Right Eye. Help!?

admin — Sat, 02 Jan 2010 04:47:01 +0000

I have Astigmatism.. My prescription is as follows:
SRX SPH CYL AXIS
O.D. +2.50 -2.50 x 18
O.S. +3.50 -2.50 x 168
Also, I had waited 6 months to buy the actual glasses.
Should I get my eyes re-examined?

Why Aren’t My Ckntact Lenses Labeled Right Or Left?

admin — Fri, 18 Dec 2009 10:39:13 +0000

My Right Eye Has Been Crossing In Pictures! Why?

admin — Wed, 11 Nov 2009 04:34:49 +0000

My right eye has already been the worse eye and I’ve been diagnosed with an astigmatism. However, recently I’ve noticed in pictures that my right eye has been moving inward. I don’t notice it often when I look in the mirror however, it’s in almost every picture lately! What could cause this? Is there an easy fix?
Thank you so much in advance.

Do I Get My Contact Right Away?

admin — Mon, 26 Oct 2009 10:51:38 +0000

I’m going to do my eye exam and fitting for contact in a few days, I was just wondering. Do I get my contact lenses right away? ( like a tester) or I have to wait like a glasses?
NB: i have astigmatism maybe diff lenses like toric?
If yes, how long does it really take?
cheers

I Am Nearsighted In Both Eyes, My Right Eye Has Astigmatism?

admin — Tue, 20 Oct 2009 16:52:37 +0000

I am nearsighted in both eyes. Yesterday, my eye doctor gave me two regular contact lenses and when wearing them, my left eye sees perfectly but my right eye sees slightly blurry. The optometrist said that the astigmatism in my right eye is only .5 and not severe enough for a toric lens.
If I see blurry out of my right eye and not my left, do you think I need a toric lens for that eye?