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n the arrangement of a light source to create a certain effect. The lighting of a dental operatory is done to achieve a sufficient level of lighting to reduce eye strain in shifting from one field of vision to another and to achieve a light intensity across the spectrum to mimic natural light.

Patient discussion about lighting

Q. Is it true that is places with less sun light people tend to be more depressed?

A. that is correct- a good friend of mine moved to north Alaska about 3-4 years ago. in the winter they hardly have sun. then some of the people get depressed. the treatment is pretty funny- they have to move around with a hat with an illumination system shining over their eyes. they think that the lack of sun light causes a lack of certain chemicals in the brain.

Q. My husband has psoriasis and the dermatologist suggested that he try the uv light treatment.Anyone try it. some of the side effects may be skin cancer and melanoma's. If so can you please let me know if it actually did help or if not. Thanks a million.

A. uv light treatment procedure is relatively new mod of treatment so here is difficult to build an opinion about it.
Actually there are two main type of treatment relating uv light are in use one is uvb treatment and other one is PUVA (uva light based).
As uvb is the most prominent factor for skin cancer so this treatment is more risky. While PUVA is quite effective treatment and has less side effects.

Q. I had cataract surgery with iol implant, and ever since I have awful light sensitivity. Any ideas? I can't go into a "super store" without my sunglasses. My eyes ache at the end of the day. My doctor says "I don't know!"

A. May sound a bit silly question, but have you tried to consult your ophthalmologist (eye doctor, e.g. the one that performed the operation) about it? Cataract surgery, although considered very successful, isn't problem-free. Primary physician may not have the necessary specialization to deal with these subjects.

More discussions about lighting
References in periodicals archive ?
And academics believe exposure to artificial light in the evening has the same effect on humans by disrupting the body clock and the brown fat cells that prevent weight gain.
Researchers at Leiden University Medical Centre, Netherlands, reckon artificial lights disrupt our body clocks and the brown fat cells that burn calories.
The researchers, from Bangor University and the University of Exeter, used a raft in the Menai Strait to monitor how artificial light at night can affect the settlement of marine invertebrates into new habitats.
Studies in which artificial light levels are experimentally manipulated and food quality is simultaneously assessed will be necessary to determine why only parking lot mockingbirds fed their nestlings significantly later.
The resulting file of illuminances was used to determine the control of artificial light.
Equally, artificial light is not always necessary, has the potential to become what is termed 'light pollution' or 'obtrusive light', and not all modern lighting is suitable in all locations.
But what effect does artificial light have on the time-of-day and seasonal organisation of these urban animals?
The findings suggest exposure to artificial light at night could be contributing to the rising rates of depression over the last 50 years, according to study researcher Tracy Bedrosian, a doctoral student in neuroscience at Ohio State University in the US.
Neodymium glass by daylight (orange) and by artificial light (green) * Neodymium glass by daylight (pink) and by artificial light (blue)
Artificial light then can create havoc in this process, to the extremes that we experience in jet lag or working a job with changing shifts.
The same factors blamed for human obesity count when it comes to obesity in animals too: high stress levels, climate change and even artificial light at night may contribute to expanding waistline of both human beings and their pets, say researchers.
The bugs (Triatoma tibia-maculata) were attracted by the strong artificial light source in the sugarcane juice kiosk and were crushed together with the sugarcane when the juice was processed, thus transmitting the infection.