Patients with cataracts commonly report a painless, progressive decline in vision, characterized by cloudy or blurry vision, reduced visual clarity, and loss of contrast sensitivity. Visual disturbances frequently include glare and halos around lights, difficulty with night driving, increased sensitivity to bright light, and trouble distinguishing shapes or subtle differences in color intensity.^[1]

Additional symptoms may include double or multiple images in one eye, difficulty seeing objects against a background, and a general reduction in visual quality even in daylight. Cataracts typically affect both eyes, although severity may differ between eyes, and early changes may be mild and underestimated by patients.

Frequent changes in eyeglass prescription or increasing difficulty with reading may also be reported. This occurs because cataracts, particularly nuclear cataracts, can induce a myopic shift, temporarily improving near vision with new corrective lenses and masking the progression of lens opacity.^[2] Importantly, high-contrast Snellen visual acuity testing may not fully capture early functional impairment, as patients may experience significant glare and contrast-related difficulties despite relatively preserved measured acuity.^[2]