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Dementia01:30

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Dementia is a collective term for cognitive disorders primarily affecting memory, thinking, and reasoning. It is not a specific disease but a syndrome, with Alzheimer's disease being the most common cause, accounting for approximately 60-80% of cases. Other types include vascular dementia, Lewy body dementia, and frontotemporal dementia. Dementia affects millions worldwide, particularly older adults, though it is not a normal part of aging.
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The limit of detection (LOD) is the smallest amount of analyte that can be distinguished from the background noise. The LOD value corresponds to the concentration at which the analyte signal is three times larger than the standard deviation of the blank signal. Below this value, the analyte signal cannot be differentiated from the background noise. It is calculated by dividing the calibration slope by 3 times the standard deviation of the blank signals.
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Differences in Cataract Surgery Rates Based on Dementia Status.

Suzann Pershing1,2, Victor W Henderson3,4, M Kate Bundorf5

  • 1Byers Eye Institute at Stanford, Palo Alto, CA, USA.

Journal of Alzheimer'S Disease : JAD
|April 9, 2019
PubMed
Summary

Patients with dementia are significantly less likely to receive cataract surgery, impacting their quality of life. Further research is needed to understand and address this disparity in care for individuals with cognitive impairment.

Keywords:
Aging and surgeryAlzheimer’s diseasecataract surgerydementiaeye careophthalmology

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Area of Science:

  • Ophthalmology
  • Geriatrics
  • Public Health

Background:

  • Cataract surgery significantly enhances patient quality of life.
  • The prevalence of dementia is increasing in the US, yet its impact on cataract surgery utilization is poorly understood.

Purpose of the Study:

  • To investigate the relationship between dementia status and the likelihood of undergoing cataract surgery.

Main Methods:

  • Analysis of administrative insurance claims for over 1.1 million US Medicare beneficiaries (2006-2015).
  • Comparison of cataract surgery rates between patients with and without dementia using multivariable regression models.
  • Assessment of annual surgery rates and hazard ratios (HR) for receiving surgery.

Main Results:

  • Dementia patients had a 16.7% cataract surgery rate versus 43.8% for non-dementia patients.
  • Dementia patients were half as likely to receive cataract surgery (adjusted HR=0.53).
  • Dementia patients were also less likely to receive second-eye surgery (adjusted HR=0.87).

Conclusions:

  • US Medicare patients with dementia undergo cataract surgery less frequently than those without dementia.
  • This disparity raises concerns about quality of care and potential impacts on dementia progression.
  • Further investigation is required to understand the reasons for lower surgery rates and to evaluate surgical benefits versus risks in this population.