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I just started wearing glasses to correct my myopia today. I have -0.25 spherical and cylindrical power in my right eye and -0.5 spherical and -0.25 cylindrical in the left eye. Everytime I look at the ground, it looks tilted. The left hand side of the ground seems closer than the right. Why is this happening?

Is it because each lens has a different image distance and the brain not being used to these glasses yet, makes this mistake while mixing the image from both eyes together? Or is this something related to the glasses themselves and will persist?

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    $\begingroup$ Aman, your correction isn't much, but there is one thing that your eye doctor needs to check. The center of the lens MUST be centered on your pupil, ESPECIALLY at higher corrective powers. If this isn't the case, the lens will correct your vision, but it will also introduce a "prism" effect, and distort what you are seeing. Have your eye doctor do the correct measurements and confirm your pupilary distance for each eye, then confirm that the lenses are appropriately mounted in the eyeglass frames. $\endgroup$ – David White Nov 4 '18 at 15:44
  • $\begingroup$ As David mentioned, this can be indicative of poorly-mounted lenses, but you should also keep in mind that this kind of disorientation is completely natural in first-time eyeglasses users and it tends to go away in a few days as your brain learns to compensate. The discomfort should have dissipated by now (and if it hasn't, return to the doctor ASAP) but it's still worth double-checking the lens placement as indicated by David. $\endgroup$ – Emilio Pisanty Nov 8 '18 at 15:33
  • $\begingroup$ Thanks the disorientation has gone down quite a bit now. Can you explain the reason behind this initial disorientation (assuming the lenses are properly mounted)? Also, how can poor mounting cause this effect? $\endgroup$ – Aman Vernekar Nov 8 '18 at 16:38

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