First of all you errored GREATLY by trusting your abnormal eyes to chain optical. They are staffed my non-MD optometrists. You need the services of a comprehensive Eye MD ophthalmologist and a Eye MD retina specialist. You should have been referred many years ago by the chain for your high myopia and your subnormal vision. DON"T GO TO THE CHAIN OPTICAL. see your retina ophthalmologist and find a comprehensive ophthalmologist. You could even ask the retina Eye MD to recommend a good one. While the chances of you going blind (no light perception in either eye) are extremely small you are at increased risk of retinal detachment, you have myopic macular degeneration, increased risk glaucoma and cataracts. When you use your computer you need to look away from the screen every 10-15 minutes, focus at the furthest thing you can see (out the window would be great) and blink you eyes firmly 10-12 times. This helps dry eyes and relieves strain on the ciliary body (focus muscle) that may increase your myopia. Also spending a hour or more per day outside is good for myopia (all the near focusing for books, computers, iphones, video games, texting, etc is creating a world wide epidemic of myopia especially among Asians). You should also read about amsler grid testing, print one out, put it on your refrigerator and look at it daily one eye at a time. That is because lacquer cracks and myopic macular degeneration can cause "wet" (exudative) macular degeneration. With any sudden change in vision or amsler grid you need to see one of your two ophthalmologists IMMEDIATELY. Also live a healthy lifestyle: don't smoke, eat great diet, if you use alcohol us in moderation, watch your weight, gentle exercise like walking or swimming, be checked annually for hypertension, diabetes, elevated cholesterol. Avoid high impact activities like contact sports and amusement park rides, don't do head down yoga. Enjoy your nursing career my mother and two of my aunts were RNs that's how I got into medicine. If you can't control your anxiety see a psychiatrist or psychologist.