Ambient light

Common Questions and Answers about Ambient light

ambien

Avatar n tn My theory is that I am seeing these same specks of white light in normal ambient lighting. Is there any justification for this theory?
Avatar f tn I have very fair skin so I know it's important to limit my UV exposure. The problem is that my skin is very sensitive, and I've had an adverse reaction to every sunscreen/sunblock I've tried (including pure zinc-based ones). So I limit my sun exposure, and wear a big wide brim sun hat and long sleeves and pants when I'm out in the sun. I have a portable UV checker which detects the intensity of UVA/UVB rays. So that helps me know whether I'm getting much or any UV light.
Avatar m tn The iris does not change color. However it may appear to change color due to changes in ambient light and also pupil size. (much like the colors of a painting may appear to change if the light is varied by a reostat).
Avatar n tn The apparent color of the iris can vary depending on the size of the pupil and the ambient light. This is not unlike a painting looking different depending on illumination. There is no medical term for this common and normal variation. It is more common in "hazel" eyes that have elements of both brown and blue/grey/green.
Avatar n tn You might get photochromic glasses ("transitions") that will darken or lighten depending on the amount of ambient light or gradiant tints which are tinted more on the top to block overhead light but less on the bottom so as not to interfear with reading. Or wear a hat with a bill indoors, that doesn't seem to be considered impolite as it used to be.
Avatar f tn That is when your retina is the most sensitive. Eye has 3 ambient light systems: bright light: photopic system twilight; mesopic system dark: scotopic system this is 1000 times more sensitive than photopic. As I said read the wikipedia entry on entopic phenomena.
Avatar n tn My pupils are often drastically differing in size and iv experienced a feeling of aching pressure behind my right eye, also at random times my vision will blur or the room will appear to have darkened or gotten brighter, the most recent thing is at least once daily now my peripheral vision will appear to change color, as if someone had turned on come colored ambient lighting behind me, i could also describe it as everything going purple...
Avatar f tn Some things that help. Hat with brim, bright light or glare sunglasses. UV blocker on lens, maybe transition type glasses that darken and lighten with ambient light. Be sure you've read the papers on slowing down macular degeneration that are on my home page under posts/blogs. VIP is a good vitamin every day and 2 Preservision AREDS 2 supplements.
Avatar f tn Yesterday, I had to follow a powerpoint presentation on a big screen - black letters on white background with low ambient light. The letters themselves were sharp, but they were surrounded by a lighter, blurry double vision, much like a shadow. My eyes feel dry at times, sometime there's some burning feeling. I'm under the impression that the sensitivity of my cornea is reduced in comparison to other people, as I often don't feel that I've got a foreign body, like a lash e.g.
Avatar m tn I have been taking methadone for my heroin addiction and was prescribed Klonopin for anxiety. I been able to taper off methadone to 1mg and all of a sudden can't sleep. Restless legs is the worst. I take 0.25 of klonopin but it doesn't help. I know some sleep aids is benzos like Triazolam and it helped me before (i detoxed from Methadone 3 times) but this time i am on Klonopin which is another benzo. What can i take?
Avatar m tn Our eyes have 3 systems for seeing in ambient light. One for bright light, one for dim light and one for dark or night. It takes a while to shift from from one system to another ("getting use to the dark" or "getting use to the bright lights). During sleep your eyes are shut and usually you are in a dark room so your retina shifts into dark mode (scotopic) when you wake up and start to see in daylight your eye has to shift into bright light mode (photopic).
Avatar n tn They seem to be triggered by bright, reflected or fluorescent, light especially when ambient outdoor light is low, such as eveningtime or overcast days. They resolve themselves in 15-30 minutes. Not painful or anything, just a nuisance.
Avatar n tn Do you have heat for her to keep the ambient temperature up to 85 during the day? What about a full spectrum light (not an aquarium or grow light)? What are you feeding her? Young Sliders are more carnivorous than adults so she needs more meat products like mealworms, bits of fish, etc.Crickets are sometimes used but they have a low calcium/phosphorus ratio and need to be supplemented.
Avatar m tn When I switch off the light I have noticed that vision from the right eye is reduced - i.e. the amount of ambient light I can see in the room is much less than what I can see from my left eye. This heavy feeling goes away if I sit up or switch on the lights. I am highly myopic in both eyes and am 39 years old. I had my last detailed eye exam about an year ago and everything was fine. I am not diabetic. What could be the problem.
Avatar f tn Infectious body fluids, once exposed to air, become neutral because the virus is inactivated almost instantly due to its exposure to ambient oxygen.
Avatar n tn The hoops disappear shortly when my eyes have adapted to the light. In addition, in all kinds of ambient light, when a light with a bright center, such as a light bulb, traffic light, LED light on a computer, clock, etc., is in the line of vision of my left eye, I see a ray of light on both sides of the center of the light source, in a diagonal pattern, together with a halo or haze around the light. The rays do not disappear unless I move so that my left eye does not see the light source.
Avatar f tn The iris does not change color quickly like the chameleon. The apparent color may vary depending on ambient light and the size of the pupil.
Avatar m tn It is most visible when I blink and transitions from translucent to white to dark based on changing ambient light. At times it is not visible at all but can be produced at will by adjusting the light quality or angle of incidence or blinking. My vision is not distorted in any way except for the presence of the thin line. I had a full dilation exam with a board certified ophthalmologist that consisted of visual inspections of the retina using various lenses and lights.
Avatar m tn Why some lights and not others? Multiple variables including ambient light, nature of light source, angle and material the bulb and fixtures are made of.
Avatar m tn Want to withdraw from ambient with minimum insomnia.
Avatar n tn The shape of the bright spot is variable and sometimes is smaller with the same ambient light. I only see it when I put the eye in a particular position specially down or up. I went to an eye doctor yesterday, she saw my eye with the microscope light before and after dilation and said retina and macula was good, also the cornea and everything.
Avatar m tn Can gabapentin help with ambient withdrawal and if so how
Avatar m tn I didnt remove the condom for a minute after the sex and my penis was under my shirt.After that she removed the condoms.When i turned on the light after,there was some blood stain like thing on my shirt's bottom part and was smelling bad and wet.Now I'm scared did my penis touch that liquid on my shirt after removing the condom and cause HIV..I dont have any fever or sour throat or rashes or anything till now.Please do reply I'm scared will i be infected?
Avatar n tn Some patients have experienced weigh gain and sleep walking, while on treatment with ambient. The other common side effects of Ambien are headache, dizziness, mental clouding, daytime drowsiness and allergies. Hence, it is advised you visit your doctor if you are experiencing any such side effects. The drug is considered safe for a period of two to maximum six weeks for the treatment of insomnia. If taken for a longer duration, one may develop dependence on ambien.
Avatar n tn The claim that melatonin accelerates the shift of the sleep-wakefulness cycle to a new time zone is controversial, and its recommended use may prejudice alertness during working hours. Exposure to artificial light and avoidance of ambient light at certain times of the day could prove to be of help-possibly in conjunction with drugs...............
Avatar f tn Be careful about ambient light with melatonin - even an outside street light can affect it...... Also a lot of people advocate benadryl (diphenhydramine) as an OTC sleep aid. I found that the benadryl worked pretty well for myself......Might not hurt to wash it down with a cup of mint tea - Sleepytime by Celestial Seasonings is good - - and a warm shower 30 minutes or so before bed will help.... Take a minute to both congratulate yourself and spoil yourself a little.
Avatar m tn HIV is unable to reproduce outside its living host (unlike many bacteria or fungi, which may do so under suitable conditions), except under laboratory conditions; therefore, it does not spread or maintain infectiousness outside its host.