Blindness

Importance Age-related cataract, defined as progressive opacification or clouding of the eye’s natural lens, is a leading cause of visual disability and blindness. Cataract surgery is one of the most commonly performed procedures in high-income countries. More than 3.5 million cataract operations are performed annually in the US.

Observations Older age is the primary risk factor for cataracts, with approximately two-thirds of the population older than 80 years affected. As the population ages, the number of people with cataracts in the US is expected to increase to 50 million by 2050. Additional risk factors for cataracts include a hereditary or genetic predisposition, certain medications (corticosteroids), ocular trauma, significant UV exposure or radiation therapy, and certain medical conditions such as uncontrolled diabetes, retinitis pigmentosa, Down syndrome, and congenital rubella. Painless, progressive blurring of vision and visual glare are common symptoms of cataracts. Cataracts are diagnosed during an eye examination by an ophthalmologist or optometrist. Surgery to remove the cataract and implant a permanent intraocular lens (IOL) is indicated if visual impairment impedes activities of daily living and is associated with lower rates of falls (>30%) and dementia (20%-30%). Most cataract operations are performed with topical anesthesia. Therefore, patients do not require preoperative general medical testing such as bloodwork or electrocardiogram, and do not need to discontinue anticoagulants for cataract surgery. Systemic α1-adrenergic antagonists for symptomatic benign prostatic hyperplasia, such as tamsulosin, increase the risk of surgical complications and some ophthalmologists temporarily discontinue the drug preoperatively. Intraocular antibiotics, such as moxifloxacin or cefuroxime, delivered intraoperatively have reduced the rates of sight-threatening postsurgical endophthalmitis from 0.07% to 0.02%. In addition to reversing and preventing progressive vision loss, cataract surgery can reduce dependence on eyeglasses. These optional refractive benefits are achieved with advanced technology IOL designs, such as multifocal IOLs. However, multifocal and other advanced technology refractive IOLs are associated with increased costs that are not covered by medical insurance.

Conclusions and Relevance Cataracts are common among older adults and may cause visual disability and blindness without treatment. Cataract surgery reverses and prevents progressive vision loss, and advanced technology lens implants facilitate reduced dependence on eyeglasses.

Author/s:

Stephanie P Chen, Fasika Woreta, David F Chang

Age-Related Cataract Extraction Is Associated With Decreased Falls, Fractures, and Intracranial Hemorrhages in Older Adults

Erin Blanchette — Wed, 19 Mar 2025 21:36:18 +0000

Date Added:

March 19, 2025

Journal/Publication:

Journal of the American Geriatrics Society

Publisher:

Wiley

Publication Date:

March 18, 2025

URL:

Journal of the American Geriatrics Society

Type:

Clinical Research Results

Format:

Article

DOI (1):

10.1111/jgs.19441

Keywords

age‐related cataracts

cataract extraction

traumatic injury

elderly patients

PMID (1):

40099858

MeSH

Cataract removal appears to reduce falls substantially in older people. James W. Mold, MD, MPH

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Background: Cataract extraction with intraocular lens insertion (CEIOL) is among the most frequently performed surgeries in the United States and is indicated for individuals with age-related cataracts causing visual impairment. The association between CEIOL and falls and hip fractures has been described, but there is a paucity of literature describing the association between CEIOL and various other common morbidity and mortality-increasing age-related traumatic injuries.

Methods: This retrospective cohort study utilized TriNetX, a health database, to access de-identified electronic medical records. Cohorts of patients aged 60 years and older were identified using diagnostic and procedural codes. Cohort 1 was defined as patients with age-related cataracts who underwent CEIOL within 10 years of documented diagnosis of cataracts. Cohort 2 was defined as patients with age-related cataracts who did not undergo CEIOL within 10 years of documented diagnosis of cataracts. Propensity score matching for demographics and other relevant comorbidities was completed. Chi-square analysis was performed, and data were reported as odds ratios with 95% confidence intervals. Outcomes analyzed included proximal humerus fracture, distal radius fracture, hip fracture, ankle fracture, fall, subdural hemorrhage, and epidural hemorrhage.

Results: Patients who underwent CEIOL demonstrated significantly lower odds of falls (p < 0.0001), proximal humerus fracture (p = 0.016), distal radius fracture (p = 0.0004), hip fracture (p < 0.0001), ankle fracture (p = 0.0002), subdural hemorrhage (p < 0.0001), and epidural hemorrhage (p = 0.006) as compared to patients with a documented diagnosis of age-related cataract without CEIOL.

Conclusions: CEIOL was significantly associated with decreased falls and reductions in major fall-related injuries among patients with age-related cataracts. These findings strongly support improved screening protocols to detect vision loss secondary to age-related cataracts, as this may decrease the incidence of common major fall-related injuries among patients with age-related cataracts.

Keywords: age‐related cataracts; cataract extraction; traumatic injury.

Author/s:

Caitlin M Hackl, Brady P Moore, Imanouel M Samai, Brian R Wong

Screening for Prediabetes and Type 2 Diabetes

Bethie Seay — Thu, 26 Aug 2021 05:00:00 +0000

Date Added:

August 26, 2021

Type:

Meta-analyses, Reviews, and Guidelines

DOI (1):

10.1001/jama.2021.12531

The U.S. Preventive Services Advisory Committee recommends screening nonpregnant adults aged 35 – 70 with BMI >25 for prediabetes and diabetes. While there is no recommendation regarding how often to screen, they mention that every 3 years seems reasonable based upon the evidence they reviewed.

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IMPORTANCE An estimated 13% of all US adults (18 years or older) have diabetes, and 34.5%
meet criteria for prediabetes. The prevalences of prediabetes and diabetes are higher in older
adults. Estimates of the risk of progression from prediabetes to diabetes vary widely, perhaps
because of differences in the definition of prediabetes or the heterogeneity of prediabetes.
Diabetes is the leading cause of kidney failure and new cases of blindness among adults in the
US. It is also associated with increased risks of cardiovascular disease, nonalcoholic fatty liver
disease, and nonalcoholic steatohepatitis and was estimated to be the seventh leading cause
of death in the US in 2017. Screening asymptomatic adults for prediabetes and type 2
diabetes may allow earlier detection, diagnosis, and treatment, with the ultimate goal of
improving health outcomes.
OBJECTIVE To update its 2015 recommendation, the USPSTF commissioned a systematic
review to evaluate screening for prediabetes and type 2 diabetes in asymptomatic,
nonpregnant adults and preventive interventions for those with prediabetes.
POPULATION Nonpregnant adults aged 35 to 70 years seen in primary care settings who have
overweight or obesity (defined as a body mass index 25 and 30, respectively) and no
symptoms of diabetes.
EVIDENCE ASSESSMENT The USPSTF concludes with moderate certainty that screening for
prediabetes and type 2 diabetes and offering or referring patients with prediabetes to
effective preventive interventions has a moderate net benefit.
CONCLUSIONS AND RECOMMENDATION The USPSTF recommends screening for prediabetes
and type 2 diabetes in adults aged 35 to 70 years who have overweight or obesity. Clinicians
should offer or refer patients with prediabetes to effective preventive interventions.
(B recommendation)

Author/s:

US Preventative Services task Force