I was prescribed contact lens about a year ago and I used -.50. I'm always on the computer and never really wore the contact lens, so I'm sure my eyesight has slightly worsened. I just bought some circle lens the other day and the closest they had to my prescription was -.75. Would that make a huge difference?
Read more: Is there a large difference between the prescriptions -.50 and -.75 for contact lens?