Efficient Lighting, Better Vision

[17/02/2016]

Efficient Lighting, Better Vision

If households can spend RM 100,000 for your kitchen, why is it that manyhouseholds often neglect the importance of a good lighting system for the house?

Entering your own new house is always satisfactory, however, it could be the starting of a very challenging chapter in your life at the same time. Perhaps you are fussier on the furniture, the colour of your walls, appliances, curtains but we are not sure whether you are willing to allocate a little bit of your attention on the lighting that you wish to install at home. Why it has to bother you when the function is just to light up the house at night or during cloudy days? Well, if you understand how your vision works and if you appreciate your current perfect eyesight, choosing good lighting for your house will be one of your main priorities.

While you think eating carrots could maintain your vision, there are much more that you need to do to be glasses-free for your entire life. The most important thing is for you to understand your vision at a different state. When you are in a well-lit conditions, which provide colour perception and which resulted your eye to function primarily due to cone cells, you are using your photopic vision. Your eye is in photopic vision under a perfect daylight. However, when you are under a low light condition, which force your eye to function primarily due to rod cells in the eye, you are seeing using your scotopic vision. Relying on your table lamp while reading at night is an example of scotopic vision.

 

Our vision condition has influenced good lighting designs that are divided into two distinct kinds of lumen – how much light the bulb will produced by lamps. The first is called photopic lumens, which represent the relative sensitivity of the eye under intense lighting such as full outdoor sun. The second type of lumens are called scotopic, which represent the sensitivity of the eye under typical interior lighting conditions and cannot be measured directly with a standard light meter.

But why knowing all these information is essential for you to choose the best lighting for your house? It is because you need to know what makes your eye comfortable and least fatigued under the lighting system that you will choose. There is no proven studies stating that watching tv, reading or sewing under low-light could harm your eye-sight but it could cause terrible headache as you are forcing your eyes to re-adjust to your current vision. Some doctors also warn that too much light or glare is just as bad as too little light, fatiguing and especially disturbing for older people with cataracts and retina problems.

 

That can be related to cheap conventional lighting as the issue is always the quantity of light it transmits. If you feel dizzy resting at home, it might be because of your lights are too bright. And if you have good lighting at home but still experiencing blurred vision and a headache after work, it may be because of bad lighting at the office. Fluorescent lights are much brighter than efficient bulbs and this isn't always a good thing. Research done by American National Standards Institute conclude that most offices in America flooded computer stations with 2 to 5 times as much light as they need that caused eye strain and fatigue to those who are working. Obviously you do not wish to have this kind of lighting at home too.

Now let’s skip the part where you read about how conventional lights affect your health and increase the chances of getting cancer in the long run, your vision should be the main reason why you should choose good lighting for your homes. So, what you need to know about good lighting? First, you need to know about the heat that the bulb will produce. The package of the bulb will describe the Kelvin temperature of the bulb. Some bulbs with a temperature over 5000 Kelvin degrees contain blue light which can be hazardous to the retina of some people’s eyes. Bear in mind, bulbs that produce high heat are not energy efficient.


 
Other than that, how does good lighting related to efficient lighting? It is relevant to energy efficiency because when you are re-designing a facility for new lighting, you may be able to reduce the wattage of your fixtures even further. You should demand the lowest wattage fixture as possible andif you understand the relationship between scotopic and photopic, you may be able to reduce your energy costs even further.

Experts suggested 2 considerations to be made before you choose the right lighting for your home. Number one is the quantity of light and number two is the amount of glare. That is why, you have to know the luminous level of the bulb that you are going to purchase. The higher the lumens, the brighter the light will be. You can bring a black card with text and try to read it under the light that you wish to purchase to find out whether it is suitable for your vision.

If you have different demographics of people staying under one roof, the usage of dimmer can be useful. According to a clinical assistant professor of ophthalmology at New York University Medical Centre, Dr Alan Jay Friedman, your vision vary with age, the older you get, the more light you need especially when you are reading. The eye’s need for more light increases 1 percent a year. When you're 10, you can read by 40 watts or hardly any light. But by the time you're 60, you need around 100 watts.

Different section of the house will need different types of lighting. The key is to know what makes the eye comfortable and least fatigued and then to place the light with the right shade and bulb at the appropriate height and angle. You can enquire the lighting consultant before choosing the right bulb for all the sections as different sections in your house serves different activities and occupied by people from different demographics.

Choosing the best lighting for your homes might be a little bit challenging at the beginning, however it promised you a long last comfort that will benefit not only your vision and health, but also to your maintenance and utility budget. Invest a little bit more for good lighting as it last 3-25 times longer than the conventional ones and it consumed 25-80% less energy that will make you smile when you look at the reduction of your utility bills. So, should we give you more reason why you have to switch to good lighting system?