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Plus Tony 17 Nov 2017, 06:45

Hi StephG

I noticed that it is a couple of weeks since your kids got their glasses. How are they (and you!) getting on?


StephG 02 Nov 2017, 10:47

The kids got their glasses about an hour ago. And all of them wore them to school afterwards. I told them to at least give their glasses a try for the rest of the day and then I will leave it to them (the older two) to make the right choice on whether or not to wear them tomorrow or how much they want to wear them. The doctor said to make sure #3 wears glasses all the time and same with #4. He also made me schedule #3 and #4 appointments for January.

Also I just realized I never answered Cactus question, but #1 and #4 are girls and #2 and #3 are boys


Soundmanpt 02 Nov 2017, 10:42

StephG

If you don't mind me asking which is which as far as prescriptions go. I mean which prescription is for the 13 year old and so on? I have a feeling the weakest prescription might be for the 13 year old. It would be most helpful to get the older one wearing his or her glasses because that would be a big help in getting the younger ones to his or her lead. Since you said that you don't know anything about glasses I assume that you don't wear glasses yourself. If you have trouble trying to get your kids to wear their glasses you may need to go on line and order yourself a nice pair of glasses. You can get really great looking glasses on-line for Zenni (zennioptical.com) for under $13.00. You could even add on the optional AR coating (anti-reflective) for another $5.00 which is very helpful with eliminating glare and reflections form your glasses. Just order them as non-prescription. If the kids see you wearing glasses that will help make them much more self confident about wearing their own glasses. Also by you wearing glasses you will have a much better understanding about glasses.


StephG 01 Nov 2017, 20:14

Well the kiddos glasses will be ready for pickup tomorrow. No surprise they are not excited. Will see how it goes.


StephG 30 Oct 2017, 16:25

#1 is 13, #2 is 9, #3 is 6 and #4 is 2.

As for history there is a history of cataracts in my hudband's mom's side, and one of his brothers wears glasses all the time as do two of his kids and one wears them to read, and his sister's kid only wears glasses for TV and other things here and there. My husband has reading glasses (he has had them since he was 8), but does not really need them. On my side, my great grandma had cataracts, and I have one niece who wears glasses all the time.


Cactus Jack 29 Oct 2017, 19:23

StephG,

Could you tell us a bit more about the kids, such as age and gender. Sometimes Nearsightedness and Farsightedness have a genetic component. Are there any vision problems in their parents or grandparents? That will give you an idea of what to expect in the future and how closely you need to monitor their vision.

C.


StephG 29 Oct 2017, 18:36

Weirdeyes,

Thank you, for your explinations. The kiddos glasses should be ready this week. It is nice to know how much they need their glasses.

- Steph


Soundmanpt 29 Oct 2017, 12:37

StephG

I completely agree with "Weirdeyes" about those kids various prescriptions.


Weirdeyes 28 Oct 2017, 11:10

StephG

-0.50 and 0.00, -0.25,130;

This kid barely needs glasses. He/she has some pretty mild nearsightedness and astigmatism. Glasses might improve distance vision a bit, but don't be surprised if the glasses aren't worn. It's likely he/she will get a stronger prescription in the future. Maybe it's best not to get glasses for now.

-3.75, -0.50, 080 and -3.00;

This kid is moderately nearsighted. He/she will notice a huge difference with glasses.

-0.25, -0.25, 110 and -2.75, -0.75, 125

This kid has a difference between his/her eyes. To develop good depth perception he/she should wear glasses full time. Even if he/she doesn't notice a difference at first or feels weird.

And lastly -0.25 and +0.25

This is pretty much the mildest prescription possible. He/she doesn't need glasses.


StephG 28 Oct 2017, 10:38

Hi, can someone explain the following prescriptions for me. They are kids' prescription, I know very little about glasses, but would like to know what is going on with their eyes. Here they are:

-0.50 and 0.00, -0.25,130;

-3.75, -0.50, 080 and -3.00;

-0.25, -0.25, 110 and -2.75, -0.75, 125

And lastly -0.25 and +0.25

The doctor did explain very little about #3, but I did not completly grasp what he was saying.


Lou 25 Oct 2017, 06:09

Hi Freddie

Thank you very much for the clarification. I haven't personally worn varifocals, but my husband wears them. I believe that fit is very important. I'd suggest going back to the opticians and checking that your glasses fit so that you are looking through the right parts for the respective distances. If so, I'd ask for them to check your prescription again.

I really hope that this will help.

Best wishes

Lou


Freddie 25 Oct 2017, 05:15

Hi Lou

They are varifocals. The optician did say that if I was really struggling to get used to them I could try bifocals as they would probably be easier to adapt to but I don't like the idea of the line. Although with it being over a week and a half now I would have thought I would have gotten used to the varifocals if it was just a case of adapting


Lou 25 Oct 2017, 03:53

Hi Weird Eyes

The part about only plastic or hardened lenses appears to be part of the template of the sheet on which your prescription was hand written, so presumably is just the prescribing preference of the particular optician/company, and is probably on most people's prescriptions, with the exception of somebody who has been recommended lenses of a different material, for reasons relating to their prescription or life style.

Regarding your prescription, I don't imagine that you actually want an interpretation of your prescription, but please let us know if you do.

Best wishes

Lou


Lou 25 Oct 2017, 03:45

Hi Freddie

Can I please clarify that your new glasses are either varifocals (progressives) or bifocals. If they are just single vision glasses with the reading add, then these will be reading glasses only, and you would need a second pair without the reading add for full-time wear except reading. I can't however see a reputable opticians dispensing reading glasses as the only pair to someone who obviously primarily needs distance glasses, so I am wondering whether your difficulties are related to getting used to wearing varifocals for the first time.

Regarding whether 36 is too young for a reading add, in my opinion only, a reading add is not needed until the person themselves is finding difficulty with reading. Even if it makes close reading easier, I personally don't see why it would need dispensing, if the person themselves is not having any problems reading, or any symptoms relating to eye strain from reading, but as I say, this is my personal opinion only.

Best wishes

Lou


Freddie 25 Oct 2017, 03:26

Hi I'm not sure if I'm posting this in the right place but was wondering if someone could give me some advice

I went for my check-up about 3 weeks ago and was told that my prescription had changed and that I would need a new glasses. That's not really a surprise it happens quite often but I was told that I was having trouble with my close up vision and would benefit from having a reading add included in my prescription to help with that. I'd not noticed any issues at all with reading, although I did struggle a bit with the close up chart.

I was also told that while my left eye had gotten worse the vision in my right eye had actually improved slightly.

My old prescription was

L-6.50, - 1.25 R-6.00, -0.50

My new prescription is

L -7.00, -1.50 R -5.75, -0.50 +1.25

I originally wasn't sure whether to go with the add or not but my optician said I would really benefit from them so decided to bite the bullet and do so. I picked up my glasses about a week and a half ago and my vision through them just seemed really strange, nothing seemed like it was fully in focus etc if that makes sense?

I explained this to the staff in the opticians and they just said because the prescription had changed they would take awhile to get used to. It's now been a week and a half and while my vision may have improved slightly through them it still doesn't feel 100%.

Is it possible the optician made a mistake with my eye test? Especially on my right eye with that prescription improving as I didn't think that was something that could happen. Or is it just a case that it is taking me awhile to adapt to the new lenses.

Also is an add of +1.25 really something that is necessary, i'm only 36 so feel a bit young to have one.

Any advice would be appreciated.

Freddie

p.s. sorry if this is a bit of a long post


Weirdeyes 24 Oct 2017, 23:10

Can someone help read my prescription? What do they mean about plastic and hardened lenses only?

http://imgur.com/4a4MhHA


antonio 18 Oct 2017, 08:07

Natasha,

the woman in yoir second link below saying she neefs them in the gym wears a stronger prescription, more like -3.5 or -4 or even stronger, especially in her right eye.

Best regards, antonio


Cactus Jack 17 Oct 2017, 23:24

Natasha,

Everything beyond 1/2 meter or about 20 inches is increasingly blurry without the glasses. Try on a pair of +2.00 over the counter reading glasses to get an idea.

C.


Natasha 17 Oct 2017, 20:57

Thanks. Any more answers? With more specificity?

How bad is -2?


Cactus Jack 17 Oct 2017, 20:03

Natasha,

Very close to the same prescription. -2 in both pictures.

C.


Natasha 17 Oct 2017, 10:36

I really want to know. Just a guess. Please.


Cactus Jack 17 Oct 2017, 10:03

Natasha,

Why is this so important to you?

Exercises like this are a waste of time and effort. Any guesses are just that. They are not even SWAGs.

I suggest you do a bit of homework and try to learn about the several things that affect the external appearance of a glasses prescription to others.

SWAG = Sophisticated Wild Assed Guess.

C.


Boris 17 Oct 2017, 04:38

Worry not, Natasha, Fearless Leader will solve problem with help from Moose and Squirrel!


Natasha 16 Oct 2017, 22:04

PLEASE TRY. PRETTY PLEASE.


Yugz 06 Oct 2017, 14:25

Natasha

The first ones look stronger, but I can't really estimate.


Cactus Jack 06 Oct 2017, 13:50

Natasha,

There are too many unknown variables to even make a guess at a low minus prescription, which these are, from just looking at some pictures.

C.


kelly 06 Oct 2017, 08:14


Natasha 30 Sep 2017, 09:11

Based on the distortion caused by the lenses, which of these people appears to have a stronger prescription? Can you provide rough estimates of the myopia?

https://imgur.com/a/gWrgc

https://imgur.com/a/CElPz


Cactus Jack 28 Sep 2017, 08:48

Here is the:SIMPLE PRISM TEST

It is not hard to measure the amount of prism it would take for full correction. All it takes is some adding machine or cash register tape, a marking pen, some painters or masking tape (ideally with very weak "stick-um" for easy removal) and something to measure distances.

It is a little easier to work with metric measurements, but you can do it also with inches and feet. You just have to do a little more math for conversions between the two.

This test is based on the definition of 1 prism diopter as: "That amount of prism that will deflect a ray of light 1 cm at a distance of 1 meter (100 cm)".

Ideally, this test is done without any prism correction in your glasses, but you need to be able to see some calibration marks on the adding machine tape with reasonable clarity. If you can't see the marks without glasses, you can still do the test, but you must account for the prism in the glasses.

1. Select a fairly blank wall that you can attach the calibrated adding machine tape to, using the painters or masking tape.

2. Decide where you will stand or sit while doing the test. Between 3 and 4 meters or 10 and 14 feet works best. Measure the distance from that location to the wall selected in Step 1.

3. Calculate how much displacement 1 prism diopter represents at the distance measured in Step 2.

4. Using the marker, mark the adding machine tape with major divisions 5x the distance calculated in Step 3 and optional minor tick marks at 1 prism diopter intervals. The marks need to be big enough to see easily from the distance in Step 2. You might want to identify the major divisions as 0, 5, 10 etc. Note: Some large bold markers will bleed through the adding machine tape and permanently mark the surface you are using as temporary backing for the adding machine tape. Test and take appropriate precautions to prevent damage by the marker ink.

5. Attach the adding machine tape, stretched out horizontally, to the wall selected in Step 1.

6. On another short piece of adding machine tape mark an arrow lengthwise and attach that piece of tape to the wall, vertically, so the arrow is pointing at 0.

You are ready to do the test.

7 Place yourself at the location selected in Step 2, let your eyes relax so you see double and note where the "0" arrow appears to point in the displaced image. Try this test several times during the day and at varying degrees of fatigue. Make a note of your results.

8. If you are wearing glasses with prism, adjust the readings in Step 7 for the total prism in the glasses.

This test will work with horizontal prism (Base Out or Base In) or vertical prism (Base Up or Base Down) by the placement of the long tape and short tape. Often both horizontal and vertical prism exist at the same time.

Note: It is sometimes difficult, if small amounts of prism are involved, to tell if the prism correction needs to be Base Out or In, Up or Down. You may be able to tell by noticing which way the images are displaced when you block the eyes alternately. For example, if you cover the right eye and the image from the left eye is on the left, you probably need more Base Out.

Please Let me know if you have any questions and if this works for you.

C.


Danbert 28 Sep 2017, 08:00

Cactus Jack,

Just reading a little of the last few posts.

I have long thought I might have some esophoria. Or at least, when I am tired, I can find it slow to fuse what I am seeing in the distance. It's as if I can change focus from close to far away relatively quickly, but it can take effort to not see double in the distance. Then if I focus up close again, everything is easy.

I may have tried your test a long time ago but I can't remember too well now. I for one wouldn't mind trying again anyhow.


Cactus Jack 21 Sep 2017, 19:43

Sorry, the last post was to liza.

C.


Cactus Jack 21 Sep 2017, 19:42

lisa,

Mild double vision is pretty common. The general medical term for double vision is Strabismus. At that means is that your eyes do not point in the same direction. There are four compound names for the Horizontal displacement depending on the direction and possibility of fusion : Eso and Exo are the first parts of the names. Eso means that the eyes try to converge or turn inward. Exo means that the eyes try to diverge or turn outward. If you can fuse the images, phoria is tacked on to the first part. If you can't, tropia is tacked on. For example: Esophoria means that your eyes try to turn inward, but you can fuse the images. If your Eye Position Control System (EPCS) can fuse the images pretty easily, most ECPs are reluctant to consider prescribing prism. If it is difficult or impossible for your EPCS to fuse the two images or you can keep the images fused only for as long as you concentrate, Prism in your glasses, Vision Therapy, or Muscle Surgery may be the only solutions.

A while back,I came up with what I call a Simple Prism Test that is based on Sir Isaac Newton's definition of a Prism Diopter. It is on the Vision and Spec web site, but it is hard to find. Would you be interested in measuring the amount of your double vision? I will post it here if you want to try it.

I have a few more questions:

1. What is your occupation?

2. Do you do a lot of close work

3. Can you tell if your eye are trying to turn inward or turn outward?

C.


liza 21 Sep 2017, 14:03

Cactus Jack

it's horizontal.

Soundmanpt

It was an annual exam. And i'll order new glasses, mostly because i want new frame.


Soundmanpt 21 Sep 2017, 09:16

liza

I am curious, did you go for an eye exam because you noticed a change in your vision or was it just an annual exam? I ask that because the from your previous prescription to your current one is so slight. I think most people wouldn't even bother getting their glasses changed with so little change. A -.25 is the lowest possible change you can have. But like Cactus Jack said astigmatisms do effect your vision at all distances. Did you get new glasses? Even with such a small amount of CYL it still can take a little getting adjusted to.


Cactus Jack 21 Sep 2017, 09:03

liza,

There little if any relationship between a small amount of astigmatism and double vision. Larger amounts of astigmatism can cause what appears to be a small amount of double vision, but it does not go away.

When you see two images, can you tell the direction of the displacement? For example: Horizontal, Vertical, or a combination of both (Oblique).

C.


liza 21 Sep 2017, 05:31

Cactus Jack thank you for answering. Is it possible that -0,25 cyl is reason for double vision? Because i notice that i got double vision on daily basis (for a few seconds), but i could stop it consciously.


Cactus Jack 20 Sep 2017, 19:20

aviator-oo-,

You might see if you can find an eyeglass repair shop. Their primary business is repairing frames that have been broken. They might be able to drill out the fastener and install an optical screw of some type.

C.


aviator-oo- 20 Sep 2017, 17:03

I have a question which doesn't quite fit with any of the themes, but I hope someone will be able to offer advice. When it comes to fitting RX lenses to frames which you buy as sunglasses, the general rule is that plastic frames must be made from the type of plastic which expands slightly under heat. Metal frames must have a screw on the edge of the frame to release the lens. I have a number of metal frames which I would love to have RX lenses fitted to, but the screw position is welded-up and there is no way of releasing the lens. Recently, I have received some metal framed glasses from Polette.com where the RX lenses are fitted in a welded frame without a screw release. So, is there a way of getting RX lenses into metal frames without a screw? I know it is possible to ‘pop' non-RX lenses out of (and sometimes into) welded metal frames, but RX lenses? Does anyone know how this is done?


Cactus Jack 19 Sep 2017, 09:34

Lisa,

Yes, it frequently happens. -0.25 of Cylinder is very small and nothing to get excited about. Astigmatism affects vision at ALL distances and is particularly noticeable when reading small text.

Astigmatism is typically caused by uneven curvature of the front surface of the Cornea. Astigmatism typically changes very slowly, but unfortunately, it can appear to change significantly from one exam to another.

Often, the appearance of a significant change in the Axis of the Cylinder correction, while alarming, is caused by the lack of experience and understanding of the nature of that part of an eye exam.

The most subjective part of an eye exam is that of determining the Axis of the Cylinder correction. The way that is done is by using a supplemental Cylinder lens mounted with a pivot at 45 degrees. The lens is flipped back and forth on each side of the selected Axis and you are asked to judge relative blurriness of the letters you see. It is very difficult to do even if you have had many eye exams.

A while back, I wrote a piece "How to Study for an Eye Exam". In it, I described a method I use to improve the accuracy of the prescribed Axis. You may be able to find it online either here or on the Vision and Spex site. I am currently revising it and hope to post it again in the next few days.

C.


Tom 19 Sep 2017, 06:47

Liza, my partner had the same "surprise" at her last exam, when her spheric correction did not change but she got a small cylinder prescribed for both eyes.

However, after getting her new glasses, for which I accompanied her on a Saturday morning, she exclaimed when still at the optician how the new cylinder/astigmatism correction made a huge positive difference for her. She is only -1.5 spheric, but now she wears her glasses more often than before, especially in the evenings, even at home and not only for driving.

Hope you enjoy the same beneficial change!


liza 19 Sep 2017, 02:57

i got new rx and includes low astigmatism, even if i never had it before. is it normal? im 32 yo .

The previous rx was:

R: -4

L: - 4

New rx is:

R: -4, -0.25, 170

L: -4.25


Weirdeyes 19 Sep 2017, 00:12

I was just thinking about what prescriptions people consider strong. When I first got glasses I was Plano in my right eye and +1.25 in my left eye. I considered it a mild prescription. My mom considered it very mild. In my head anything below 1.00 was very mild, but anything above 1.00 was just mild. I couldn't understand why my eye doctor made such a big deal of it. When my prescription increased to +1.75 in my left eye I still didn't think it was a big deal. Eventually I realized that prescription was too weak for me. I even tried wearing my +1.75 glasses on top of my +1.25 glasses. I enjoyed the vision it gave me. I conveniently didn't do the math and just considered it +2.00 or something. I didn't consider +2.00 strong. I was shocked when my next prescription was a bit over +3.00. I considered +3.00 a strong and thick prescription. When my next prescription was over +4.00 I didn't have the same shock. But my dad did. It seems like his cutoff was 4.00, while mine is 3.00.


Mr Jules 18 Aug 2017, 16:46

Presbyopia is advancing again. For several years, I thought my eyesight had stablised at +1.50 distance, with an addition of +1.75. But over the last 12 months, I've had two eyesight tests and as I could tell my reading vision was getting worse again.

Now my prescription is +2.00 for distance and an addition of +2.25. I didn't think my distance vision had got worse, too. It was only the last eyetest that I finally realised I was going to need new lenses. I've been wearing progressive lenses for some years.

Well, I've got my glasses reglazed with the new prescription. And what a difference the new lenses make. But I notice that I have to move my head more and learn to target my eyes through the centre of distance portion of lense to reduce peripheral distortion.

But the middle and close up vision is where there's most new benefit. But with these stronger lenses comes depedency. Without glasses, my distance vision hard to tolerate. And my close up vision is now horribly blurry!

I also have a separate pair of prescription single vision reading glasses at +4.25 which I prefer for extended periods of reading. It's taken about a week to get used to them.

I started wearing +1.00 reading glasses when I turned 40, for occasional use. I am completely fine with being dependent on glasses now. They are an intergral part of my appearance. They only thing I miss is not being able recognise someone in the distance, without my glasses. Worsening close-up vision is one thing, but worsening distance vision is harder to deal with (I think).


Soundmanpt 07 Jul 2017, 08:17

SoCal

It would seem that if your eyesight doesn't seem to be quite as good as it was 8 months ago when you first started wearing -3.00 correction after having wore -3.50 that there has been some change in your eyes. I think since your still nursing it would be best if you can manage to hold off getting your eyes examined until you're finished with that. Having children for many women often does change your eyesight. I have mentioned in here about someone I know quite well that became pregnant. She had perfect eyesight, but with each passing month of her pregnancy her eyesight was getting worse. When she was about 7 months along she wasn't able to drive at night because she couldn't see well enough. I went to see her where she was working and I had several pairs of women's glasses in various prescriptions that I use for the vision group I work with. The strongest pair i had was only -1.50 I believe. All the weaker ones wasn't much help to her. But the -1.50 glasses seemed pretty close to what she needed. I gave them to her because i knew I could replace them. I didn't see her again until a few months after she had her baby. She was wearing a very nice looking pair of glasses that looked really good on her. Of course being a proud momma she wanted to show off her baby boy. She quickly offered to return the glasses I gave her and thanked me again for letting her borrow them. I told I didn't need them back. I complemented her on how nice her new glasses looked on her. She said she thought that once she had the baby her eyesight would return to normal which didn't happen. But she said she was okay with wearing glasses.


 06 Jul 2017, 19:01

I don't think your wearing your glasses full time made your vision worse. I mostly did not wear my glasses as a child and my eyes got worse. When I finally wore my glasses full time my vision still got worse for several years and then stopped getting worse. At that point I was -10 plus a lot of astigmatism. It seems that nearsightness (myopia) takes it's course whether we wear glasses or not.


NNVisitor 06 Jul 2017, 10:23

SoCal

While I don't and never have worn soft contact lenses due to my astigmatism level I'm certainly familiar with the experinces of quite a number of soft contact lens wearers. Many wear them from morning to before going to bed every day. For years until in many cases they have a problem and then a trip to the eye care professional where they are told to stop wearing contact lenses for a few weeks, a few months or permanently.

Soft contact lenses can dry up during wear. That is not good for the eyes especially over a long period of time it can take it's toll.

While I wear gas permeable contact lenses I'm very careful not to overwear them day in day out. Each day typically morning and later evening I wear my glasses to give my eyes a break and to avoid eye problems from occurring. I've worn lenses over 30 years and by not overwearing them and allowing my eyes to rest I've avoided contact lense related eye problems and have not damaged my eyes.


SoCal 06 Jul 2017, 08:01

I'm pretty much -3.0 across the board, contacts included, with the exception of the very minor astigmatism. I'd say I've had this rx for about 8 months now and just starting to notice that it wasn't as good as when I got it, and even then it wasn't perfect. I had gone about 2 years previously without an exam and living off hoarded contact lenses, haha. Prior to the -3.0, I was a -3.5, again, not very much difference, but I did notice that there was one. Between the two different rx, I had two children and that really threw my vision all over the map. I am still nursing and partially weaning my youngest and I am wondering if that is changing things and making my eyes stabilize to my previous pre children rx. Like I said, this pretty negligible but I was curious. I have been wearing my glasses more recently for sure and I'm kind of liking it. My eyes feel like they can breathe. I am partial to the Moscot frames currently have and was looking into getting sunglasses to combat this California sun but decided against it. I decided to order a different brand of contacts that my dr prescribed (he gave me two options) to me and continue wearing my regular sunglasses.


Soundmanpt 06 Jul 2017, 07:16

SoCal

So I assume when you say that you feel like you may have been under prescribed coming from -3.50 in both eyes to -3.00 both eyes you're referring to your contact lens prescription in both cases? That is very strange to happen. But if your eyesight has improved a bit it is going to take a little time for your eyes to adjust because they are used to the stronger prescription. So I would suggest giving it a try for maybe 2-3 weeks and if you still feel like you still need your lenses to be stronger go back and tell your optometrists that you would be happier with the stronger lenses. They are their to please you and shouldn't have any problem putting you back in -3.50's again if your more comfortable with them. Sounds like your eyes are starting to rebel against your contacts if you're having trouble wearing them for 14 hours or more like you used to do. But if you're really wanting to start wearing your glasses more often to the point where your about 50/50 between glasses and contact wear that should help a lot. Maybe try wearing glasses for your everyday life and only wear contacts for special occasions, working out, doing sports and maybe going out for the evening. You have shown several really nice looking pairs of glasses that you bought so you're glasses are trendy enough.


SoCal 04 Jul 2017, 23:37

Thanks everyone! I actually think I was slightly under prescribed having come from a -3.5 in both eyes but I'm okay with it for now. I'm actually enjoying the small amount of cyl correction in my glasses, It definitely is having me in my glasses more than contacts. I'm hoping for a 50/50 split between contacts and glasses because I can tell that I'm having a harder time wearing contacts for 14 hrs or more like I used to.


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