I've got -2.75 & -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 & 1.5 or 2 for the 1.75 eye?
64369
Because of the difference I would suggest buying 1 pair in each of the diopters you need and swapping out the lenses. For me the difference was only 1 point so I went up a half. They've worked out great.
64370
Two easy ways to solve this issue: There is a company called Platina (they also sell on Amazon) that sells the Corrective lenses separately so you can go that route if you like but it is more money. Second option: determine which is your DOMINANT eye and buy a pair with that correction. 99% chance you will NEVER notice the difference since your dominant eye controls most of your "vision"
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.
1770041
I am not sure if you are asking how low can you go as in is there lower then 1.8, BUT aperture can go as low as 1.2 which is EXPENSIVE. 1.8 is just fine if you are thinking cost effectiveness.
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.
1635571
I was lucky, because the loupes that I had prior to had the 2.5x written on them. It all depends on what you need for your working distance. I am five six and I work in a dental office. The 3.5 work great for me and so did the 2.5. If you are taller I would get a rep to visit you, and then order them through amazon. Through the reps their pricing is outrageously high.
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.
530656
Maybe, if plus or minus 2 diopters is enough to allow you to see your menu clearly. It's usable for me but i could really use a little more than +/- 2 diopters.
727222
The CPC is listed as using 1.25" star diagonal. You should be able to use the 2" star diagonal in this kit to use the eyepieces in this kit. You will need to remove the 2" diagonal and reattach your 1.25" diagonal to use your 1.25" eyepieces.
524634
I'd like to know, too. My two are quite different. One seems clearly to be at 5, and the other at 6.25.
1635572
What I was told with 3.5X loupes is the focal distance should be at least 24-36". I must admit, I was "off" until I finally got myself to hold my head away from the patient at least that distance. Otherwise, everything is blurry. I'm also trying the 2.5x loupes now.
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)
944545
Well it depends how far are you shooting in my neck of the woods. 3x9 is fine. I like 3x9 I leave Lt on 3 while walking in just in case I jump something. On 3 I can focus quickly on a target . The only time I adjust higher is when sitting once I spot something or when target shooting. I normally target shoot 50- 200 yards with no problem with 3x9 either way its a wonderful scope you be happy.
1340325
The first number is the power of the lens, that is how much it will magnify the image. The second number represents the diameter of the lens in mm. They work together to calculate a number called the "exit pupil" or "exit ratio". Take the lens size and divide it by the power to get this number. The higher the number, the brighter the image. For example, 10x50 will give an exit ratio of 5.0, 8x42 would be 5.25, 10x42 would be 4.2. In my opinion, the exit ratio is more important than the power. My favorite binoculars are 8x50 (6.25) but I also just bought 10x50 as a gift who is delighted with that configuration. Stay away from high-power binoculars. They, for me, are too hard to keep steady due to the high magnification. I hope this helps. -Norm
766794
Blue lenses are excellent for all types of light. We currently have the +2.5 in stock but not the +3. Hope that helps.
492745
No problems and glad I could help. I think you read the info incorrect though. "Optimum Eye Relief (in) 12-20 "
2066690
I think it is best if you start with 0.5mm because it is safer and not painful and if you like it and get used to it get a replacement head of 1.0mm.Also depends on the areas where you want to use it, use smaller needles as a beginner or to use in gently areas such as around the eyes. hope this helps.
1915312
Download the user manual, there is a chart with that info. I have 92" (diagonal) and am at 14'2" without adjusting the focus and so on. You'd need to be back some .... Mines a 3010, so YRMV.... It's worth the effort to get it "just right"....
1216096
I have different sizes for different areas. I have been using the 1.0 for my face, 0.5 for around the eyes and 2.0 for body areas. I hope this helps. I actually did my face last night.