Reviewed by medical experts • For informational purposes only
Introductory Summary
Delay hardens the lens and can ignite painful glaucoma; surgery's own risks are rare and treatable - know both sides.
An untreated cataract does not stay politely still - it hardens, swells, and can inflame the eye from inside. And cataract surgery, though remarkably safe, has its own short list of risks. Both sides belong here.
Complications of the untreated cataract
Hypermature (Morgagnian) cataract: the lens liquefies and leaks protein - this can trigger painful inflammation and lens-induced glaucoma, an emergency that can cost the eye
Lens-induced glaucoma: a swollen intumescent cataract physically blocks fluid drainage - pressure rises, pain begins, and now TWO diseases threaten sight
Phacolytic/phacomorphic crises: the leaked or swollen lens sets off inflammation and pressure spikes - red, painful, urgent
Subluxation: a hypermature lens can slip from its moorings
Harder surgery: a rock-hard mature cataract makes the eventual operation longer, riskier and slower to heal - delay actively worsens the surgical odds
The invisible companions: a dense cataract hides the retina behind it - diabetic retinopathy or macular disease can progress unseen while everyone waits
Complications of surgery (uncommon, mostly treatable)
Posterior capsule opacification: the commonest by far - the membrane behind the new lens hazes months or years later ("after-cataract"); fixed with a 2-minute painless laser in the clinic
Cystoid macular edema: retinal swelling blurring central vision weeks after surgery - usually settles with drops
Endophthalmitis: infection inside the eye - rare (well under 1 in 1000) but the true emergency: increasing pain, redness, falling vision in the first week after surgery means SAME-DAY return to the surgeon
Retinal detachment: rare, slightly higher after cataract surgery - new flashes, floaters or a curtain over vision at any later date means urgent review
Raised eye pressure, corneal swelling, lens-position problems: uncommon, managed when caught - the follow-up visits exist for exactly this
The warnings to carry home
After surgery: increasing pain + worsening vision + redness = same-day emergency, not a wait-and-watch
Untreated for years: a blind painless eye can turn into a blind PAINFUL eye (lens-induced glaucoma) - the worst bargain in eye care
Sudden flashes, floaters or a curtain at any time = retinal emergency, 24-48 hours
The classics warned about bad timing too
Sushruta's own caution: piercing an immature cataract, or a faulty puncture (mithya vedhana), brings severe pain, intraocular bleeding and adhimantha - the classical name for the acute pressure-crisis eye - and can end in incurable blindness. The ancient text's instruction was the modern one: the right stage, the right hands, or not at all.
One-line summary
Delay hardens the lens and can ignite painful glaucoma; surgery's own risks are uncommon and nearly all treatable when the follow-up visits and the same-day emergency rule are honored.
