Exposing the LASIK Scam

One Surgeon at a Time
It is currently Mon Dec 17, 2018 12:21 pm

All times are UTC




Post new topic Reply to topic  [ 5 posts ] 
Author Message
 Post subject: Vision and quality of life & depression, related studies
PostPosted: Thu Mar 20, 2008 12:17 am 
Offline
 Profile

Joined: Sat Nov 26, 2005 1:23 pm
Posts: 2080
Graefes Arch Clin Exp Ophthalmol. 2007 Dec 11 [Epub ahead of print]
The value of vision.
Knauer C, Pfeiffer N.
Universit?ts-Augenklinik, Langenbeckstrasse 1, Geb?ude 102, 55131, Mainz, Germany, knauer@augen.klinik.uni-mainz.de.

BACKGROUND: The value of vision is assumed to be very high. To verify this assumption and to assign resources in medical care accordingly, it is necessary to quantify the value of vision. Although the value of vision is difficult to measure, visual quality of life can be quantified as a surrogate criterion. The measured value gains even more relevance if a comparison can be made between visual quality of life and systemic diseases. Multidisciplinary comparisons are only possible by using utility analysis. Two established methods to measure utility values are the standard gamble method and the time trade-off method. The purpose of this review is to find ophthalmologic utility values, and utility values affected by systemic diseases that correlate to the ophthalmologic ones.

METHODS: A literature search was conducted though PubMed of the National Library of Medicine ( http://www.ncbi.nlm.nih.gov ; date: 06.02.2006). The search terms were: "time trade-off / standard gamble" [text word] and "eye / vision / visual" [text word]; results 24. A report was classified as relevant if visually impaired persons were tested by the time trade-off method or the standard gamble method, or if information was provided on the reliability and validity of these measurements in a group of visually impaired persons. Additional searches were done to find associated publications. A total of 42 publications were found to be of interest.

RESULTS: Results showed that patients, with 20/30-20/50 visual acuity would be willing to pay 19% of their lifetime to get back normal visual acuity. Patients with 20/200-20/400 visual acuity would give up 48% of their lifetime, and blind people would give 60% of their lifetime to regain normal visual acuity. Comparable utility values are seen in patients with AIDS (21%), patients after a stroke who are unable to walk and wash themselves without assistance (46%), and bedridden and incontinent patients following a stroke (66%).

CONCLUSION: Patients attach great value to vision. The time trade-off method appears to be an appropriate tool to quantify visual quality of life, and one that can be used to compare utility values of different diseases.

_________________
Broken Eyes

"The price good men pay for indifference to public affairs is to be ruled by evil men." Plato


Top
 
 Post subject:
PostPosted: Thu Mar 20, 2008 12:19 am 
Offline
 Profile

Joined: Sat Nov 26, 2005 1:23 pm
Posts: 2080
Am J Ophthalmol. 2008 Jan 26 [Epub ahead of print]
Changes in the Quality-of-Life of People with Keratoconus.
Kymes SM, Walline JJ, Zadnik K, Sterling J, Gordon MO; on behalf of the Collaborative Longitudinal Evaluation of Keratoconus Study Group.
Department of Ophthalmology and Visual Sciences, Washington University School of Medicine, St Louis, Missouri; Division of Biostatistics, Washington University School of Medicine, St Louis, Missouri; Center for Health Policy, Washington University, St Louis, Missouri.

PURPOSE: The Collaborative Longitudinal Evaluation of Keratoconus Study (CLEK) previously showed that people with keratoconus report significantly impaired vision-related quality-of-life (V-QoL), as measured on the National Eye Institute Visual Function Questionnaire (NEI-VFQ), similar to that of people who have severe macular degeneration. For this study, we evaluated changes that occurred in V-QoL over seven years of follow-up.

DESIGN: In this prospective cohort study of 1,166 participants followed up for seven years, we estimated change in V-QoL by projecting the slope of a minimum of three reports on 11 scales of the NEI-VFQ. Correlation with clinical indicators was evaluated, and differences were assessed between those who had clinically significant changes in clinical factors and those who did not. Logistic regression was used to assess factors associated with a decline in 10 points or more in a scale score over seven years.

RESULTS: All scales showed modest decline except ocular pain and mental health. Baseline factors were not associated with longitudinal change in NEI-VFQ scores. A 10-letter decline in high-contrast binocular visual acuity or a 3.00-diopter increase in corneal curvature were associated with significantly larger declines in V-QoL. In multivariate analysis, these factors also were found to be associated with a 10-point decline in NEI-VFQ scale scores.

CONCLUSIONS: Keratoconus is associated with significantly impaired V-QoL that continues to decline over time. For a substantial plurality of patients, these declines are significant.

--------------------------------------

Eye Contact Lens. 2008 Jan;34(1):13-6.
The disease burden of keratoconus in patients' lives: comparisons to a Japanese normative sample.
Tatematsu-Ogawa Y, Yamada M, Kawashima M, Yamazaki Y, Bryce T, Tsubota K.
Department of Ophthalmology, Keio University School of Medicine, Tokyo, Japan.

PURPOSE: Keratoconus is a chronic, noninflammatory, degenerative disease of the cornea that has an onset in young adulthood. The objective of this study was to evaluate vision-related quality of life (VR-QOL) in patients with keratoconus by using the Japanese version of the National Eye Institute Visual Function Questionnaire-25 (NEI-VFQ-25).

METHODS: Forty-five patients diagnosed with keratoconus at the Keio University School of Medicine were enrolled. Patients were divided into three subgroups according to corrected visual acuity. Group A included patients whose best-corrected visual acuity was at least 20/20 in both eyes. Group B included patients with a best-corrected visual acuity of at least 20/20 in only one eye. Group C included patients whose best-corrected visual acuity was worse than 20/20 in both eyes. Thirty-six age-matched subjects were recruited as control subjects. The Japanese version of the NEI-VFQ-25 was administered to each subject.

RESULTS: All NEI-VFQ-25 subscale scores were significantly lower (P<0.05) in patients with keratoconus than in the control subjects. Subscales evaluating general health, ocular pain, and vision-specific mental health showed particularly low values. Among patients with keratoconus, every subscale score other than color vision correlated with corrected visual acuity.

CONCLUSIONS: The results support that and describe how multidimensional visual function and VR-QOL are impaired in patients with keratoconus, including those with normal visual acuity. Ophthalmologists and other clinicians should carefully evaluate and address the full range of quality of life issues that may affect patients with keratoconus.

_________________
Broken Eyes

"The price good men pay for indifference to public affairs is to be ruled by evil men." Plato


Top
 
 Post subject:
PostPosted: Thu Mar 20, 2008 12:21 am 
Offline
 Profile

Joined: Sat Nov 26, 2005 1:23 pm
Posts: 2080
Optom Vis Sci. 2007 Nov;84(11):1024-30.
Depression in older people: visual impairment and subjective ratings of health.
Hayman KJ, Kerse NM, La Grow SJ, Wouldes T, Robertson MC, Campbell AJ.
Department of General Practice and Primary Health Care, School of Population Health, The University of Auckland, Auckland, New Zealand. k.hayman@auckland.ac.nz

PURPOSE: The aim of this study was to establish the prevalence of depression in a sample of older adults with impaired vision and investigate associations between physical and visual disability and depression.

METHODS: We analyzed cross-sectional baseline data from 391 participants aged >or=75 years with visual acuity of 6/24 (20/80) or less, recruited for a randomized controlled trial of interventions to prevent falls (the VIP trial). Measures included the geriatric depression scale (GDS-15), the state-trait anxiety index, activities of daily living (Nottingham extended ADL scale), physical activity (human activity profile), an index of visual functioning (VF-14), health-related quality of life (SF-36), objective measures of physical ability, and a measure of visual acuity. Regression models were developed to investigate the association between depression scores and physical, psychological, and visual disability.

RESULTS: About 29.4% (115 of 391) of participants were identified as potentially depressed (GDS-15 score >4). Physical function, physical activity, physical ability, visual function, anxiety, and self-reported physical and mental health were significantly worse for those with depressive symptomatology. Physical, visual, and psychological factors collectively explained 41% of the variance in the depression score in a linear regression model (R=0.421, adjusted R=0.410, F (7,382)=39.680, p<0.001). Depression was not related to age, gender, living situation, ethnicity, or number of prescription or antidepressant medications taken.

CONCLUSIONS: Depression was common in this population of older adults with severe visual impairment. Impaired visual and physical functions were associated with symptoms of depression. The effect of visual disability was independent of the effect of physical disability. The strength of this relationship, and the results of the regression analyses, indicate that a person who is visually or physically disabled is more likely to suffer from depression.

_________________
Broken Eyes

"The price good men pay for indifference to public affairs is to be ruled by evil men." Plato


Top
 
 Post subject:
PostPosted: Thu Apr 03, 2008 12:04 am 
Offline
 Profile

Joined: Sat Nov 26, 2005 1:23 pm
Posts: 2080
Arch Ophthalmol. 1993 May;111(5):680-5.

Vision change and quality of life in the elderly. Response to cataract surgery and treatment of other chronic ocular conditions.

Brenner MH, Curbow B, Javitt JC, Legro MW, Sommer A.
School of Hygiene and Public Health, Johns Hopkins University, Baltimore, Md.

OBJECTIVE--Evaluation of health care in older populations has increasingly focused on quality of life as a critical outcome of treatment. Vision is assumed to be central to functioning. Data suggest that aging, in itself, is associated with a decline in visual functioning, which, in turn, is related to a decline in physical and mental functioning. Other studies indicate that cataract surgery is followed by significant improvement in vision and visual function. Our objective was to test these assumptions.

DESIGN--Prospective study of 1021 patients, consecutively drawn from 76 randomly selected ophthalmologists' offices in three cities. Structured interviews were completed at baseline, 2 months, and 1 year after entry.

PATIENTS--Six hundred thirteen patients with cataracts and 408 other ophthalmic patients drawn from the same offices but treated for other chronic ocular disorders. All received refractive services as needed.

SETTING--Patients from three cities (Baltimore, Md, St Louis, Mo, and San Diego, Calif) were interviewed once in their homes and twice by telephone.

INTERVENTIONS--The study involved the measurement of the effects of usual treatment for cataracts and other degenerative eye diseases.

MAJOR OUTCOME MEASURES--Visual, social, and psychological functioning.

RESULTS--Within 1 year of treatment, change in visual function was accompanied by significant changes, in the same direction, in quality of life functions: night-time driving, daytime driving, community activities, home activities, mental health, and life satisfaction. In addition, the patients with cataracts showed significantly greater improvement in measures of vision than did the noncataract group.

CONCLUSIONS--Regardless of treatment, improvement across quality of life functions occurred when visual function improved. Thus, many types of functional degeneration observed in older populations, attributed to a decline in vision, can be slowed, or even reversed, when visual function is improved. Cataract surgery was effective in improving vision and quality of life functions.

_________________
Broken Eyes

"The price good men pay for indifference to public affairs is to be ruled by evil men." Plato


Top
 
 Post subject:
PostPosted: Tue Apr 08, 2008 10:48 pm 
Offline
Site Admin
 E-mail  Profile

Joined: Thu Jul 21, 2005 4:38 am
Posts: 33
http://www.lasik-flap.com/suicide_paper.pdf


Top
 
Display posts from previous:  Sort by  
Post new topic Reply to topic  [ 5 posts ] 

All times are UTC


Who is online

Users browsing this forum: No registered users and 1 guest


You cannot post new topics in this forum
You cannot reply to topics in this forum
You cannot edit your posts in this forum
You cannot delete your posts in this forum
You cannot post attachments in this forum

Search for:
Jump to:  
cron
Powered by phpBB © 2000, 2002, 2005, 2007 phpBB Group  
Design By Poker Bandits