Cataract surgery
(Redirected from Cataract extraction)
Cataract surgery is a procedure to remove the lens of the eye when it becomes clouded, typically due to aging, and replace it with an artificial lens. It is a common and generally safe procedure that can significantly improve vision.
Introduction
Cataracts are a leading cause of visual impairment worldwide. They occur when proteins in the lens of the eye clump together, clouding the lens and leading to blurred or dimmed vision. Cataract surgery is the only effective treatment to restore vision in patients with visually significant cataract.[1]
Indications
Cataract surgery is typically recommended when cataracts interfere significantly with daily activities, such as reading, driving, or watching television. The decision to proceed with surgery is often patient-driven and based on the impact of the cataract on the quality of life.[2]
Procedure
The most common type of cataract surgery is phacoemulsification. After the application of local anesthesia and dilation of the pupil, a small incision is made in the cornea. The surgeon then inserts a probe that emits ultrasound waves to break up the clouded lens, which is then removed by suction. Following removal of the cataract, an artificial lens, or intraocular lens (IOL), is inserted. The IOL stays permanently in the eye, taking over the focusing function of the natural lens.[3]
Postoperative Care and Recovery
After cataract surgery, patients are often given a protective shield to wear over the eye. Eye drops are prescribed to prevent inflammation and infection. Visual recovery is usually rapid, with many patients noticing improved vision within several days. Full healing of the eye takes about a month.[4]
Risks and Complications
While cataract surgery is generally safe, potential complications include infection, bleeding, inflammation, swelling, retinal detachment, glaucoma, and vision loss. However, these complications are rare and can usually be managed effectively if detected early.[5]
Outcomes
Cataract surgery has a high success rate, with over 95% of patients experiencing improved vision. It significantly enhances the quality of life by improving visual acuity, color perception, and contrast sensitivity.[6]
See Also
References
- ↑ Bourne, R. R. A., et al. (2014). Causes of vision loss worldwide, 1990–2010: a systematic analysis. The Lancet Global Health, 2(6), e339-e349.
- ↑ Olson, R. J., et al. (2003). Cataract treatment and evaluation of visual acuity. Archives of Ophthalmology, 121(2), 157-160.
- ↑ Day, A. C., et al. (2020). The Royal College of Ophthalmologists' National Ophthalmology Database study of cataract surgery: Report 6. The clinical effectiveness of different lens surgery techniques. Eye, 34(9), 1577-1586.
- ↑ Stein, J. D., et al. (2005). Quality of life after cataract surgery in a community-based sample. Journal of Cataract & Refractive Surgery, 31(5), 913-921.
- ↑ Hatch, W. V., et al. (2009). Risk factors for acute endophthalmitis after cataract surgery: a population-based study. Ophthalmology, 116(3), 425-430.
- ↑ Mangione, C. M., et al. (2003). Impact of cataract surgery on reading and vision-related quality of life. Journal of cataract & refractive surgery, 29(5), 793-800.
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