Bigger is not always better when it is concerning selection of television screens. The screen range available today is from thirty two inches to one hundred and fifty inches. But what is best for you does not depend on the size of the television screen; it depends on the size of your room.
If you have a very large television screen and if you sit very close to that television, then the pixels will break and you will not get a clear picture quality as this is the basic principle of distance measurement when you are watching television. If you sit too far also, you may lose picture details. The distance between your chair/sofa and the television has to be just right. The measurement for optimal viewing is that the nearest seat position has to be about twice the diagonal width of the television screen and the furthest viewpoint should not be more than five times that width.
Another way to calculate is to divide the television screen size by 7.9 to find the minimum distance for seating and divide by 4.0 to get the maximum distance in feet. For example, if you get a 46” TV screen, the minimum viewing distance is 5.8 or 6 feet and the maximum is 11.5 or 12 feet.
If the room space is restrained and you have to sit close to the television, it is best you go for a small 32” screen. The best viewing position is when your eyes are the centre of the screen. The recommended vertical position for a television is fifteen degrees or less as anything more than that will strain your neck. While sitting close to the television screen will strain your eyes, insufficient lighting will also affect your eyes. The room has to be well lit to avoid eye fatigue. A way of reducing eye strain is to back light the television by placing a lamp behind it and above on a wall.