Last December I checked my eye power.On the right eye the power had increased from -3.5 to -4.5. but on the left eye it was constant -3.5 no change there.for last 2 months I am using new eyeglasses.But now I can feel tht eye power on my right has increased again.Is it normal to increase this frequently.But my lefteye power is still same .only right eye I am facing tthis problem.It also feel ache on my right eye(thoda jalta hai). Btw I am an software engineer so I work on laptop or phone most of time . What to do? Thank you