Spaying removes both the uterus and both ovaries and is crucial in the prevention as well as the treatment of mammary cancer. SIMPLE CONVENIENCE. The female dog comes into heat every 8 months or so. There is a bloody vaginal discharge and attraction of local male dogs.
Tired eyes can come from any number of activities. Some of the most common include working on the computer for too long, poor lighting conditions, driving a car for prolonged periods of time, reading for long periods, or any other activity that may require the eyes to maintain intense focus for long periods of time.
While old CRT computer screens may not emit dangerous levels of UV light and LCD monitors don't emit it at all, eye-strain, fatigue and sleeplessness can still occur from overexposure to computer monitors. More than radiation, eye strain should be a concern if you spend long periods of time in front of a computer.