Cataracts Treatment

Question by Helel: Multiple questions about the eye.?
Hey, I have a Biology test coming up on Thursday, and the teacher is a bit strange, in that she asks questions that have come up on past exams. So I’ve got such a booklet open in front of me, and there are some questions here to which I don’t know the answer, and which probably will come. So I’m posting them here.

(1mk) 1.) Early types of contact lenses were made of non-permeable glass. This could allow lactic acid to build up in part B, causing discomfort.

Suggest why lactic acid builds up when people use contact lenses made of glass.

(1mk) 2.) The cornea has no blood vessels. Suggest why it is possible to graft in a replacement lens here without it being rejected.

(2mks) 3.) Suggest a simple method you could use to measure the extent of the field of view of a human.

(4mks) 4.) Describe the reflex action in the iris when the intensity of light entering the eye is suddenly increased.

(1mk) 5.) Suggest why many animals have most of their sense organs on the head.

(1mk) 6.) Give one advantage of having two eyes (believe it or not, I don’t know this. <_<).

7.)The lens is made of protein. In some people, part of the lens may become cloudy. This is known as a cataract.

(2mks) A.) Describe a test for protein.
(2mks) B.) Suggest how a cataract would affect the function of the lens

(2mks) 8.) A person with a cataract can have their cloudy lens replaced with one made from a special material. Suggest 2 properties the material would need to have to be successful as a lens.

(2mks) 9.) Describe how glucose moves from the aqueous humour into the lens, when the concentration of the glucose is abnormally high.

And that's all. You don't have to answer them all, but if you know one, just give the number (and A or B if present) and its answer. These are all questions from different years, but our teacher is mad, she could pull a question from any one of these, regardless if we've learned about it or not.

Thanks in advance.
I looked up some of these questions on the internet, and I got some answers, such as the sense organs on head one, or the test for protein one, but others, like measuring the field of view, or the replacement lens, I didn't find anything. That's why I asked here. My own text books don't contain any info on these.

Besides, isn't this site named Yahoo Answers?

Best answer:

Answer by millardmissmore
A much better way to prepare for the test would be for YOU to look up the answers to these questions. When you’ve done the research, you will know the material much better than if someone merely tells you an answer.

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Question by Valerie A: Cataract surgery questions?? have you had it done?
and if so, what was your experience like?? Years ago it used to be a major big deal, these days its said to be a lot easier and pretty successful, is this the case for you?? ANd , did you see better right away?? Did it take time to adjust to the new vision at all???? Thanks for your opinions on this, it is good to hear others experiences. Teaches us what to watch out for as well as giving us hope ….Blessings to you.

Best answer:

Answer by handyman
I had it done on both eyes within two years of each other. Easy peasy. The surgery itself is virtually pain-free, afterward you may have a little discomfort which lasts maybe a day. For me, my vision improved immediately (I was having “halos” and blurred night vision), although I did have to have my prescription for glasses changed both times. Not everybody does. There is much to be gained and nothing to lose. Good luck.

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Question by flashbulb: After cataract surgery eyeglass questions?
Last December I had cataract surgery on both eyes. About Feb 1 my Dr. gave me an RX for a new executive trifocals lens for the first eye repaired. Naturally the Rx was for only a small fraction of the correction that I previously had. I waited a little over 2 weeks for the delivery and it seemed fine. During the medical follow-up for the other eye in late Feb the Rx for the second eye was written. Although I have ordered it, for reason unknown it has not been delivered. I have paid a lot of money for the new lenses and am now very concerned for two reasons. 1) the first lens only 3 months old is looking like it is distorted first in the reading segment a week later in the inter. segment and now the distant. Seems there is warranty claim but another problem 2) I have had 2 additional follow-up visits to the surgeon and each time he writes a new Rx for the second eye.

Additional info. I have worn a large amount of prism in both eyes for the past several lens changes before the surgery but have not always had prism and have never had bionocular vision. I absolutely can not use flat seg bi or tri focals. I have doubts about the progressives as i need an alley wider than the glasses themselves. My surgeon retired on April 1. I am very please with the surgery but believe I may need to go back to an optometrist to get a good refraction yet need some advice that is unbiased.

Best answer:

Answer by David E
You are wearing a pretty obsolete lens there so it is no surprise that is taking a while to come in.

Know better? Leave your own answer in the comments!

Question by JamesC: Is there a Web Site(s) that I can ask an ACTUAL human eye Doctor specific questions for free, and response?
No cataracts. Wear prescription glasses.
Have, for many years (what I’ve named)”Black Dot Floaters”…..
I can roll my eyes and get the “DOT” to get out of my main-line-of-vision for a while. “Dot”, is not consistant……..”Floats” to other areas of my eyes, then “Floats” back…..then I have to roll my eyes again to ‘clear’.

Is there a SAFE procedure to clear without having to go through ‘lens replacement’ and/or Lasik?

Best answer:

Answer by jmason024
You should ask a doctor. There are occasionally some on this site giving answers. I don’t know any specific sites. I also don’t think any doctor would diagnose or suggest treatment for you without first physically examining you.

That said I have a floater too. The floater actually does not move in my field of vision. It appears to move when my eyes move, and when I look to the right it is under my eyelid and cannot see it. My doctor told me that floaters are like a hardened bubble inside the eye, and if they move in the eye it would be imperceptible. He also said that there is no way to treat a floater.

I hope my experience helps as it relates to yours, but you should see a doctor in person not just to seek a solution, but also to make sure you are asking about the right problem.

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Question by cutelittlecoconut: glaucoma,cataracts,marijuana questions?
Ok so I was born with cataracts on both of my eyes and the doctor’s failed to see them….my mother actually saw them and scheduled an appointment and I had my first of 3 or 4 surgeries at age 5.I also have a surgically dilated right eye as well because my eye wouldn’t dilate while I was on the operation table.Within the last year I have been diagnosed with glaucoma and I’m 25 now.I’ve been smoking marijuana recreation-ally and illegally off and on since 16, but now only do it to help with my glaucoma to help lower my iop (along with eye drops)and help with the pain.I also want to know what the likelihood of getting cataracts again is?

MY soon to be husband of which I have a child with dislikes marijuana with a passion and wants to get into law enforcement (we live in Kansas) but I really don’t want to stop because of all the benefits that marijuana gives me and would rather smoke pot than be a “pill popper” which i will sub for the marijuana if I have to stop to help manage the pain. I think I should have the right to choose what medicine I take and what works best for me I just wish he understood and that it was legal here because I really don’t like breaking the law and I have seen so many people get addicted to pills that i just don’t wanna go down that road.I understand marijuana is illegal but so are a lot of this people do everyday like speeding,no seatbelts,running lights ect…..and they are not frowned upon like the marijuana is even though they are being more dangerous and studies have shown marijuana is less hash on your body than tobacco or alcohol i just don’t get it????

Please answer all my questions not just the ones about marijuana!!!
thanks for the advice but i really didnt need a lecture…..sorry about your dad though
Marijuana is only physiologically addictive not physically and I’ve never had a problem saying no to any other drug just like somebody that drinks soda pop which has caffeine ( a drug) has a problem saying no to heroin there’s no link for me its like comparing apples to oranges. I have zero guilt when it comes to marijuana use I’m very proud actually to be a functioning adult contributing to society not taking from it with goals and priorities. My world doesn’t revolve around” getting high” and I have to say I’m a little offended. I was merely being honest about when i started using marijuana.

Yes I have a lens transplant of some sort maybe cornea I’m not sure?
and yes I do have the kind that benefits from the use….sometime i wonder if me smoking hindered the doctors from finding and diagnosing sooner than now?
oh and I have gone to a specialist since age 5 and a glaucoma specialist since 2007

Best answer:

Answer by Kelsey W
First of all–I’m sorry that you are dealing with glaucoma at such a young age. I can’t imagine what that would be like, but I think it would be hard to deal with along with a young family. You seem like a strong person though. Although I cannot give my point of view from dealing with this first hand, I hope my answer helps you think things through from a different angle. Basically I’m 19 years old, a Physiology pre-med student, and my dad (a family practice doctor) died when I was 8 when he OD’d on drugs, and he started with “weak” drugs just like marijuana. That colors my opinion greatly, so please don’t be offended if I vehemently oppose drugs with such a high risk of addiction (which is something to take very seriously and get help asap if you need it–trust me, your child and family will thank you forever. And it can be treated very effectively if you get help early when you see signs of addiction in yourself. It is a strong disease, and is something you should be proud to recognize in yourself and get help for. It’s so important. If so, get help NOW).

So my highly affected opinion from the experience I’ve been through is that you shouldn’t be smoking marijuana, especially if you have a child. (And I know you’re not smoking it around him–there are other dangers to him via your choice to smoke). There are other ways of treating IOP in glaucoma. Also, marijuana really isn’t even very effective in managing IOP because it is not efficient, it is short-lived, and has many adverse side effects. Also, you can become tolerant to doses very fast (happened to my dad) and your body won’t have the same physiological response to the drug over time as you would have to smoke it many (up to times during the day.

http://www.eyecareamerica.org/eyecare/treatment/alternative-therapies/marijuana-glaucoma.cfm

Potentially serious side effects associated with smoking marijuana include an increased heart rate and a decrease in blood pressure. Studies of single-administration marijuana use have shown a lowering of blood pressure concurrent with the lowering of IOP.[7,8] This raises concerns that there may be compromised blood flow to the optic nerve, but no data have been published on the long-term systemic and ocular effects from the use of marijuana by patients with glaucoma.

“Other adverse effects from the use of marijuana that have been reported include conjunctival hyperemia, impaired immune system response, impaired memory for recent events, difficulty concentrating, impaired motor coordination, tolerance to repeated doses, decreased testosterone in men who are chronic users, and short-term withdrawal symptoms after cessation.[9] Smoking of marijuana also can lead to emphysema-like lung changes,[10] increased risk of cancer, and poor pregnancy outcomes.[2] Because the duration of the induced fall in IOP is short, an individual would have to smoke a marijuana cigarette eight or ten times a day in order to control IOP over 24 hours.[10]”

I think you would benefit from seeing a doctor that specializes in glaucoma and related eye diseases. It’s a common serious affliction, and is being studied heavily for new treatments and possible cures. can help with addiction.

My questions for you would be:
Did you have a corneal transplant when you were younger?
Are you sure your type of IOP and glaucoma is the kind that can benefit (even a little) from cannabis?
Do you have a prescription for the drug? If a doctor won’t prescribe it for you, I would take that as a sign that they are wary of it in your case and are far ahead of you in questioning its usage.

Also, you say that you have been using recreationally since 16, but now you ONLY do it for the pain and iop of glaucoma. I think you are not being entirely honest with yourself, as you have recognized there may be an issue here and express guilt/doubt for your actions.
I would advise you to work this choice out carefully with the help of an unbiased listener such as a therapist or counselor. Because you are correct in that this is your choice alone, and you do have the ultimate decision to make.

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