What are the Forms of Astigmatism?
I am astigmatic. That’s the reason why I can’t stay long infront of my computer. It’s just that I can no longer stay away from it since I am a full-time geek. I’m sure some of you are astigmatic too. But what are the forms of astigmatism?
According to wikipedia.org, there are two distinct forms of astigmatism. The first is a third-order aberration, which occurs for objects (or parts of objects) away from the optical axis. This form of aberration occurs even when the optical system is perfectly symmetrical. This is often referred to as a “monochromatic aberration”, because it occurs even for light of a single wavelength. This terminology may be misleading, however, as the amount of aberration can vary strongly with wavelength in an optical system.
The second form of astigmatism occurs when the optical system is not symmetric about the optical axis. This may be by design (as in the case of a cylindrical lens), or due to manufacturing error in the surfaces of the components or misalignment of the components. In this case, astigmatism is observed even for rays from on-axis object points. This form of astigmatism is extremely important in ophthalmology, since the human eye often exhibits this aberration due to imperfections in the shape of the cornea or the lens.
I don’t know about you but if you think you are astigmatic, then consult an ophthalmologist. In most cases, I’m sure he will recommend wearing of eyeglasses or contact lenses. The good thing about having a check-up is common sense - you will be able to know what’s really wrong with your eyes and if there’s a need to correct them, you can if you will know the problem in the early stage before anything gets worse.
If you want to get updates on the articles in this site, please subscribe to my RSS feed. Thank you for visiting!
Tags: astigmatic, astigmatism, health, Nursing, nursing education, Nursing Research
I’m done with eye check-up back in the Philippines and I just wear glasses during prolong usage of computer. I’m exposed to computer too since my high skul days. Before, I experience blard vision and headache so I stopped using computer until I study college with computer management course. So far okay na siya nung napahinga ko at okay narin mga mata ko but I still wear glasses but not to often just to protect my eyes. Jess may facebook account na ako at na search kita, Cute ng picture mo ah mukhang genious! approve mo ako ha? Hehehe.
Joy’s last blog post..My plan to buy new laptop
[reply to this comment]
jessie reply on April 16, 2008:
Joy,
I have added you already in Facebook.
jessie’s last blog post..Sexy Pinay Playboy Playmates
[reply to this comment]
Astigmatic din ako, according to my optha. Nirecommend nyang gumamit ako ng eyeglass o contact lens pero matigas ulo ko, till now di ko pa rin ginagawa.
Amor’s last blog post..Joining the Bandwagon
[reply to this comment]
Fren,
Ako eh 9 years old pa lang nang magsuot ng eyeglasses. My eyes are killing me sometimes. That is why when it comes to blogging, when I have posted an article, i go to sleep. Kung may comments, kinabukasan ko pa nasasagot.
jessie’s last blog post..Managing Your Wealth and Assets Needs a Plan
[reply to this comment]
My right eye is 75% astigmatic. We really need to be kind to our eyes, Kuya. Walang pagsisisi na nauuna…
Scotty’s Princess’s last blog post..Take Care of Your Hands
[reply to this comment]
tama si ate ellaine! walang pagsisisi na nauuna..arrghhh! i so hate wearing glasses!!! but really..i can;t do without it!!!
[reply to this comment]
RJ,
Pare-pareho tayo.
[reply to this comment]