Question
Question Description: Doctor, hello. The test results from Xiamen Ophthalmic Center for my eyes are as follows: Left eye: 700 degrees myopia, 50 degrees astigmatism. Right eye: 700 degrees myopia, 150 degrees astigmatism. Apart from the above myopia and astigmatism issues, no other problems were detected. However, after adding 50 degrees astigmatism to the left eye, I still have double vision when looking at objects with the left eye alone. After adding 150 degrees astigmatism to the right eye, there is no double vision. Specifically, when looking at lights, there is a layer of ghosting on top of the light. Even when sitting very close to the computer, there is still double vision in the left eye. When removing the glasses and looking at objects with light at close range, such as with the naked left eye, hello!
Answer
During the high myopia glasses fitting process, optometrists always consider the issue of patient fatigue during near vision due to accommodation, which is also a principle of refraction, i.e., appropriately reducing the prescription, usually achieving a clear near vision effect of 0.8. If the prescription is increased slightly, it will inevitably increase the burden on eye accommodation, which may lead to blurred near vision. Note: During refraction, in addition to considering clear distance vision, near vision issues should also be taken into account so that glasses can be worn comfortably.