Use of vision tests in clinical decision making about cataract surgery: results of a national survey

Frost, N A; Sparrow, J M

doi:10.1136/bjo.84.4.432

Cited by 22 publications

(31 citation statements)

References 12 publications

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“…[15][16][17] In the management of cataract, visual acuity is still considered the primary criterion for quality of vision. 18 However, disability glare has been accepted as a criterion as well. 19,20 Because straylight increases with age, a phakic norm curve has been defined 4 to be used as reference in clinical practice as well as in clinical studies.…”

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confidence: 99%

Ocular straylight in the normal pseudophakic eye

Łabuz¹,

Reus²,

Berg³

2015

Journal of Cataract and Refractive Surgery

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PURPOSE:To assess normal values for straylight in the pseudophakic eye as a function of age and to develop a model to predict the improvement in straylight after lens extraction based on preoperative straylight levels.SETTING: Rotterdam Ophthalmic Institute, Rotterdam, the Netherlands. DESIGN:Review with retrospective cross-study analysis.METHODS: A literature review was performed to identify relevant papers on straylight and pseudophakia with no patient comorbidities. Sixteen papers met the eligibility criteria and were included in the analysis. The postoperative results were used to define the norm for straylight in pseudophakia. Straylight improvement after lens replacement was assessed by evaluation of preoperative and postoperative values. The age effect was incorporated to determine a model for straylight improvement. RESULTS:The mean postoperative straylight value derived from 16 studies (1869 eyes) was 1.21 log units G 0.21 (SD). Age dependence could be assessed from 13 studies (1533 eyes), resulting in the straylight age-norm curve in pseudophakic eyes as follows: Straylight value Z 0.0044 Â age C 0.89 with G 0.42 log units of 95% confidence interval. A strong correlation was observed between preoperative straylight and its improvement after lens extraction, yielding the following relationship: Straylight improvement Z 1.04 Â preoperative straylight value À 0.006 Â age À 0.84. CONCLUSION:A norm for straylight in the pseudophakic eye was developed that is considerably different from the previously published norm for the phakic eye. The new pseudophakic norm can be used clinically to predict the straylight value after lens replacement and as a reference criterion for clinical studies.

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confidence: 99%

Ocular straylight in the normal pseudophakic eye

Łabuz¹,

Reus²,

Berg³

2015

Journal of Cataract and Refractive Surgery

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“…2 In some instances, (high contrast) VA can be reasonably well preserved in the presence of symptomatic visually impairing cataract, but most British ophthalmologists use other visual tests infrequently. 3 Nor is there widespread familiarity with quality of life instruments for cataract assessment. 4 In the absence of a formal assessment of other aspects of vision and visual quality of life, the functional status of many cataract surgery patients with good acuity remains poorly understood.…”

Section: Introductionmentioning

confidence: 99%

The Bristol cataract listing survey: Profile of listed patients with visual acuity 6/12 or better

Malik

Frost

Sparrow

et al. 2004

Eye

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Introduction The aim of this study was to assess the vision-related quality of life (VR-QOL) in patients with good distance Snellen visual acuity (VA) who are listed for cataract surgery. Methods An observational cross-sectional prospective study of patients listed for cataract surgery. VA and VR-QOL data using the VCMI questionnaire were collected on patients attending preoperative assessment during June 2002. Results A total of 397 cataract patients were listed during this month. Following exclusions there were 378 eligible individuals, 210 (56%) of whom had a VA of 6/12 or better in the eye scheduled for surgery. Of these, 40% patients had only mild VR-QOL impairment. More than half of the patients with good VA (6/12 or better) in the surgery eye and mild VR-QOL impairment described their vision as poor in this eye. However, most of these patients were not dissatisfied with their overall level of vision. Conclusion A significant number of patients listed for cataract surgery with VA of 6/12 or better had only mild VR-QOL impairment and were not dissatisfied with their overall level of vision. The decision to list a patient for surgery may have been based on the patient's perception of monocular vision rather than their quality of life.

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“…Many surgeons in the UK are prepared to consider cataract extraction for patients with visual acuities as good as 6/6 Snellen. 21 Comparatively liberal acuity criteria were therefore chosen in order both to reflect modern surgical practice and to avoid precluding surgery in those with good visual acuity but impaired quality of life. The various criteria were combined to produce the three composite criteria as shown in Table 1, with criterion A being the least stringent and criterion C the most stringent.…”

Section: Criteria Defining Requirement For Cataract Surgerymentioning

confidence: 99%

The population requirement for cataract extraction: A cross-sectional study

Frost

Hopper

Frankel

et al. 2001

Eye

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Purpose To examine the distribution in the population of indications for cataract extraction in order to relate demand for this procedure to the capacity for satisfying it.Methods An age-stratified random population The existing record in ophthalmological epidemiology offers good data on the population distribution of eye disease,9-11 but the uncertain relationship between pathology and the capacity to benefit from surgery means that such data provide only a limited basis for judging the requirement for cataract extraction.This study was designed to examine the relationship between the potential demand and the supply of cataract extraction surgery.Eye (2001) 15, 745-752

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Use of vision tests in clinical decision making about cataract surgery: results of a national survey

Cited by 22 publications

References 12 publications

Ocular straylight in the normal pseudophakic eye

Ocular straylight in the normal pseudophakic eye

The Bristol cataract listing survey: Profile of listed patients with visual acuity 6/12 or better

The population requirement for cataract extraction: A cross-sectional study

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