Ask HN: Do your eyes bug you even though your prescription is "correct"?

Hacker News Discussion ↗

Ill-fitting or Incorrectly Made Glasses

  • Several people found their “correct” prescription felt wrong due to simple fit issues (nose pads, temple length, bent frames, wrong pupillary distance or lens center).
  • Others reported lenses that were technically the right numbers but manufactured or mounted poorly, causing blur, distortion, or headaches until remade.

Distance, Age, and Task-Specific Prescriptions

  • Many over ~40 described presbyopia: distance prescriptions fine, but near/intermediate work (screens, reading) causing strain.
  • Strong theme: separate “computer/occupational/intermediate” glasses focused at ~2–3 feet dramatically reduced headaches and fatigue.
  • Some use multiple pairs (distance, intermediate, reading); others rely on bifocals, trifocals, or progressives. Experiences are mixed:
    • Some say top-tier progressives are seamless.
    • Others find progressives unusable for screens, with narrow clear zones and constant head tilting, and prefer dedicated single-vision computer lenses.

Optometrists, Testing, and DIY Tuning

  • Many distrust basic retail optometry: repeated “20/20” prescriptions that still feel wrong, minimal discussion of working distance, and resistance to nonstandard requests (e.g., slight undercorrection).
  • Several people improved comfort by:
    • Going to ophthalmologists or academic / specialty centers.
    • Using trial lens sets or cheap online glasses to step through small variations (sphere, add, prism).
    • Intentionally undercorrecting distance or using weaker lenses for computer work.

Complex Vision Issues Beyond Simple Refraction

  • Reported conditions: astigmatism (sometimes very sensitive to axis), higher-order aberrations/halation, keratoconus, convergence issues/BVD, small vertical prisms, and eye-muscle imbalances.
  • These often required prisms, rigid or scleral contacts, or specialty fitting; standard glasses alone were inadequate.
  • Some younger users already show early presbyopia or fluctuating prescriptions; causes are sometimes unclear.

Screens, Lighting, and Ergonomics

  • Contributors linked symptoms to:
    • Screen distance/height and posture (neck tension headaches).
    • Excessive brightness, PWM flicker (especially OLED/LED), and harsh white LEDs.
    • Long, uninterrupted screen sessions; 20‑20‑20–style breaks and looking far away help many.
  • Workarounds: larger or farther monitors, intermediate-distance setups, color/contrast tweaks, dark/light mode choice, and e‑ink for some use cases.

Dry Eye, General Health, and Other Factors

  • Dry eye from reduced blinking at screens is repeatedly cited; preservative-free drops, newer tear-film agents, and conscious blinking help some.
  • Dehydration, poor sleep, stress, blood pressure issues, and even environmental factors (e.g., radon, AC airflow) are mentioned as headache/eye-strain contributors.

Surgery and Advanced Corrections

  • Experiences with LASIK/PRK and implanted lenses are split:
    • Some describe life-changing clarity, minor night halos, and long-term satisfaction.
    • Others report complications or residual aberrations and are wary of operating on a “critical organ.”
  • Scleral and wavefront-guided lenses are praised where available but are costly and specialist-dependent.