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evansnash posted:
I have had some problems of my eyes. I am healthy and most of the things are not serious, but I would like to know how things work. I do have some sources including the book Mayo Clinic On Vision and Eye Health which is a very good source. There are some things that are not in the book.


Where does what one sees go from left to right and right to left? What is the approximate location from the front to the back of the eye within in the vitreous cavity as the percent from its front to the middle area.


How does the liquid from an eye drop get to the aqueous humor. It is dropped on the front of the eye. The aqueous humor draws from between the iris and the lens. That is straight forward. But how does liquid from the front of the eye get into the iris/lens area.


The eye gets liquids from somewhere which then creates "sandman dirt" which is then sent to the nose. How does the liquid get into the eye? Or does it not get in at all? Is it only clearing out the outside.


I have red and yellow in my eyes (one is red, the other is yellow). At night I see information on the clock. By covering each eye separately and can see the difference in color. Is there any reason for the difference in the colors.


I ski. I pass through a tunnel on the highway and three times I have had a very bright floater that lasted for 15 minutes. What is strange about it is that it is a floater with large alternating sections of black then white all of which are the same size. Other floaters that have seen are more like clouds or a black spot indication the exit at the back of the eye.


I had a post entered to add a tooth. A gun was used to force the support for the post. That was 36 very strong hits. After that there were many changes. One thing is that at night I see 4 visions at night (day is only a single one). The vision at night changes with distance. It becomes only one when I get up close (about 50 feet). Why is this only occurring at night.


With glasses I can see a small light on the sound system that indicates that it is on. With my eyes, the small light is about 4 times longer. It is still round but the length across it is much larger. Why not back to the small size by the glasses.


On occasions I have had wonderful views in the daytime, but the evening has very poor results as mentioned above.


Just a comment. 40 years ago. I looked out of the window and noticed that I had two lines on the middle of the street separating those coming and those going. It the day time there was only one.
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Alan M Kozarsky, MD responded:
A very complicated posting with many embedded questions. See below:

I have had some problems of my eyes. I am healthy and most of the things are not serious, but I would like to know how things work. I do have some sources including the book Mayo Clinic On Vision and Eye Health which is a very good source. There are some things that are not in the book.[br>[br>[br>Where does what one sees go from left to right and right to left? What is the approximate location from the front to the back of the eye within in the vitreous cavity as the percent from its front to the middle area.
THE VITREOUS CAVITY AND CONTAINED VITREOUS GEL COMPRISE THE MAJORITY OF THE VOLUME OF THE EYE.[br>[br>[br>How does the liquid from an eye drop get to the aqueous humor. It is dropped on the front of the eye. The aqueous humor draws from between the iris and the lens. That is straight forward. But how does liquid from the front of the eye get into the iris/lens area. AQUEOUS IS PRODUCED BY THE CILIARY BODY BEHIND THE IRIS AND CIRCULATES FORWARD (AROUND THE LENS) THROUGH THE PUPIL AND OUT THROUGH THE ANTERIOR CHAMBER ANGLE.[br>[br>[br>The eye gets liquids from somewhere which then creates "sandman dirt" which is then sent to the nose. How does the liquid get into the eye? Or does it not get in at all? Is it only clearing out the outside. THERE NORMAL SECRETIONS ON THE SURFACE OF THE EYE ARE NOT RELATED IN ANY WAY TO FLUIDS INSIDE THE EYE. THE OUTSIDE THE EYE SECRETIONS EXIT VIA OPENINGS ON YOUR EYELID AND THEN THROUGH YOUR NOSE.[br>[br>[br>I have red and yellow in my eyes (one is red, the other is yellow). At night I see information on the clock. By covering each eye separately and can see the difference in color. Is there any reason for the difference in the colors. EARLY CATARACT ?? HARD TO KNOW FOR SURE[br>[br>[br>I ski. I pass through a tunnel on the highway and three times I have had a very bright floater that lasted for 15 minutes. What is strange about it is that it is a floater with large alternating sections of black then white all of which are the same size. Other floaters that have seen are more like clouds or a black spot indication the exit at the back of the eye. 15 MINUTES SOUNDS MORE LIKE A MIGRAINE PHENOMENON[br>[br>[br>I had a post entered to add a tooth. A gun was used to force the support for the post. That was 36 very strong hits. After that there were many changes. One thing is that at night I see 4 visions at night (day is only a single one). The vision at night changes with distance. It becomes only one when I get up close (about 50 feet). Why is this only occurring at night. NIGHT MYOPIA? MILD NEARSIGHTEDNESS IS OFTEN WORSE AT NIGHT[br>[br>[br>With glasses I can see a small light on the sound system that indicates that it is on. With my eyes, the small light is about 4 times longer. It is still round but the length across it is much larger. Why not back to the small size by the glasses. THERE IS AN INCREASED "BLUR AREA" RATHER THAN A POINT FOCUS WHEN NOT WEARING YOUR PROPER CORRECTION[br>[br>[br>On occasions I have had wonderful views in the daytime, but the evening has very poor results as mentioned above.[br>[br>[br>Just a comment. 40 years ago. I looked out of the window and noticed that I had two lines on the middle of the street separating those coming and those going. It the day time there was only one.


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