I've got -2.75 &amp; -1.75 eyes. Should I round up or down to the nearest diopter? For each eye. 2.5 or 3 for the 2.75 eye &amp; 1.5 or 2 for the 1.75 eye?
47633
So you have the option to have a different strength for each eye? I did not when getting swim goggles and went with something in the middle, so in your case, either 2 or 2.5. I have one eye too strong, one not enough, but that does not seem to be a problem.
107885
Go higher! under water there is less visibility, so anything that gives you the edge, I would go for... Anyway there is some eye adjustment at any point and at that level half a Dioptric is almost negligible (my unprofessional opinion)
1753205
Thanks for taking the time to reply. I suspected as much, so I have just been using one at a time. Nice to know that I needed to, and should continue to, in the wide angle range.
557872
If you wear reading glasses...the kind you purchase at the drug store, get the same magnification. If you don't need reading glasses get the 0.0.
1939955
Hello; This is an 8 diopter lens. A diopter changes the focus range of your lens. Diopters come in powers from +1 to +5 (that I've seen). They're also stackable: you can put a +4 diopter on top of another +4 diopter, and conveniently that gives you the effect of a +8 diopter. (Quality does suffer when you stack.) The higher the number, the more powerful the diopter. The more powerful the diopter, the closer you can focus. Specifically: divide 100 centimeters by the diopter power. That's the maximum focus distance of the diopter. A +5 diopter focuses at 20 centimeters or less. A +2 diopter focuses at 50 centimeters or less, so an 8 diopter lens would focus around 13 centimeters or less. Hope this helps. Remember, this lens works when you are in full telephoto.
2087332
Eye relief is unlimited due to being 1x. Even at indirect view. As long as the dot is on target Use mine at about 8 inches.
107887
My daughter's prescription is -7.0 in one eye and -7.25 in the other. I purchased the -7.0 for her and they work great. For you I bet that the 9 would be better as you are already very nearly there at -8.75.
2075683
My vision is not that far out however I have issues with small print and it is exactly what I use them for is reading. the multiple lens should give you a good match. I wear over my glasses also.
336773
Hi, I said I would check the use of the MaxTV glasses with my 4.25 Diopter contact lenses removed.I did, the focus adjustment did NOT go quite far enough to give a sharp focus. It was very close,but not quite there. If you used a two diopter, I don't think you would have a problem, even a 3 diopter would probably work. So for what it's worth. Ang, again, they work as I wanted them to.
187867
I also noticed the "200" and assumed that it meant 2.00. Turns out that it did: the glasses are indeed a +2.0 correction. I'm not sure whether they just left out the decimal point after the 2, or maybe "200" is just what they call it.
2173899
Remember, the minute you go from 1x1 up the power scale, you change your field of view!! If you have vision problems, then who cares!! Target acquisition during combat is probably 75% reflex. Good vision, good reflex, breath control, and trying to control adrenelean rush is paramount, but if you are shooting 300 yards or more then acquiring your target should not be a problem with a 2x magnifier. For closer targets stick with the 1x unless you have severe vision problems. ENJOY!!!
107802
That equation is correct... it is called spherical equivalent. With a -3.00 sphere and -3.25 cylinder, your spherical equivalent is -4.50. Keep in mind this will give you pretty decent vision - good enough to see at a reasonable distance, but this will not be equal to a full spectacle prescription. I am an optometrist.
1632326
i've found 1 1/2" is the "best". That close, always manual focus if possible.
2191696
That has never been a problem for me. I see fine. Would not need to adjust them. At first I thought that would be a problem but it was not. However I have 20 20 uncorrected vision.
759249
My brother has loan his 50 1.4 to me. I like. I may get the 24-70 2.8 - we get so many positives about it. Use the 24-70 indoors and the 4f lens where there is good light??Thanks for your suggestions.
1951961
There are three lenses which can be stacked for greater magnification. Using the first lens only it's about 8-8.5 inches. Add the second lens and that drops to about 4 - 4.5 inches. Add the circular lens (for the right eye only) and it drops to about 3/4 - 1 inch. Hope this helps.
614136
Some people with an astigmatism will see more than one dot or the dot will seem out of round. I am one of those people and you just get use to it over time. My aimpont and delta point do the same thing.