cataracts

DEFINITION of cataracts

They develop slowly with age, trauma, radiation, or diseases like diabetes, leading to blindness if untreated; surgery replaces the lens with an artificial one, restoring sight effectively.

• Nuclear sclerotic: Central lens hardening.​
• Cortical: Wedge-like opacities.​
• Posterior subcapsular: Back lens clouding, glare-prone.​
• Phacoemulsification: Ultrasonic lens removal surgery.​
• Glaucoma: Often co-occurs, pressure-related damage.

---

Cataracts are more than just “cloudy vision.” They’re a gradual clouding of the eye’s natural lens that can cause glare, faded colors, halos around lights, trouble driving at night, and frequent prescription changes; cataracts are usually not painful and may affect far and near vision differently depending on the type.

What happens inside the eye

The lens sits behind the iris and helps focus light onto the retina. With cataracts, proteins in the lens clump together and the lens becomes less transparent, so light scatters instead of focusing cleanly.

That’s why patients often describe vision as looking through a fogged window. The change can be slow, and some people adapt at first without realizing how much they’ve compensated.

Common symptom patterns

Different cataract types tend to cause different visual complaints. Nuclear cataracts often affect distance vision first and can make the lens yellow or brown, which can also make colors harder to distinguish.

Cortical cataracts often cause glare and trouble in bright light, while posterior subcapsular cataracts often hit near vision, distance vision, and glare sensitivity more quickly than the others.

Risk factors and causes

Age is the most common risk factor, but cataracts can also be associated with trauma, radiation exposure, diabetes, smoking, and steroid use.

Because several of these factors overlap with other eye diseases, it is common for cataracts and glaucoma to coexist in the same patient.

Non-surgical management

There is no proven medicine or eye drop that reliably reverses cataracts. Early on, symptoms may be managed with updated glasses, better lighting, anti-glare lenses, magnification, UV protection, and smoking cessation.

These measures can help function, but they do not remove the cloudy lens. They mainly buy time until surgery is needed.

Surgery and recovery

When cataracts start interfering with daily life, surgery is the definitive treatment. The cloudy lens is removed and replaced with an artificial intraocular lens, and phacoemulsification is the common technique used to break up and remove the lens.

Outcomes are generally excellent, with vision often improving significantly after surgery. The exact timing depends on how much the cataract affects reading, driving, work, and safety.

---

ETYMOLOGY of cataracts

latin From Latin “cataracta” (waterfall, portcullis), from Greek “katarrhaktēs” (down-rushing), metaphorically describing the white opacity resembling rushing water or an obstruction.

---

DERIVATIONS of cataracts

TABLE definition AS Definition
FROM #medterm 
WHERE length(filter(roots, (word) => econtains([[cataracts]].roots, word))) > 0 AND file.name != [[cataracts]].file.name
SORT file.name ASC

---

Query functionality

TABLE definition AS Definition
FROM #medterm 
WHERE length(filter(definition, (word) => econtains([[cataracts]].definition, word))) > 0 AND file.name != [[cataracts]].file.name

Med terms dictionary Appendix A Prefixes Appendix B Combining Forms Appendix C Suffixes Appendix D Suffix forms