See if patching your left eye will help. Also, what is the refraction in each eye? Is your good eye 20/15 without glasses? And your refraction in the left eye? Also, get a PAM or RAM test to see if the retina will see better than 20/40. If it gets to 20/25 or better consider removal of the cataract.
Dr. O.
I tried patch my left eye a few hours for a few days and it didn't help. Do you mean to patch it for longer time.
My left eye is -4.00 and my right eye is -2.00 and 20/15 with glasses.
What is PAM or RAM test ?
Taurus
Yes, patch longer. However, most patients can fuse up to 2.00 diopters of difference. You are right there. Some patients can not.
See if contact lens with -4.00 or -3.75 in the left and -2.00 contact lens in the right eye helps your discomfort. RAM or PAM measure the retinal visual acuity potential. You are currently 20/40 and if these test show 20/25 for example, removing the cataract and if there are no corneal problems, you would get close to 20/25.
Dr. O.