Variation in Ophthalmic Testing Prior to Cataract Surgery

Bass, Eric B.; Steinberg, Earl P.; Luthra, Rajiv; Schein, Oliver D.; Javitt, Jonathan C.; Sharkey, Phoebe D.; Tielsch, James M.; Legro, Marcia W.; Kassalow, Jordan; Steinwachs, Donald M.

doi:10.1001/archopht.1995.01100010029018

Cited by 19 publications

(5 citation statements)

References 3 publications

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“…These aspects of medical care represent an enormous expenditure 1 and studies suggest wide variation in test ordering behavior for seemingly similar indications. [2][3][4] Several factors that may explain this variation include physicians' inability to estimate test performance characteristics, inaccurate interpretation of diagnostic test results, [5][6][7][8][9][10][11][12] and rapid advances in diagnostic technology that make it difficult for clinicians to stay abreast of the most effective testing strategies.…”

mentioning

confidence: 99%

Techniques to Improve Physicians' Use of Diagnostic Tests

Solomon¹,

Hashimoto²,

Daltroy³

et al. 1998

JAMA

283

203

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mentioning

confidence: 99%

Techniques to Improve Physicians' Use of Diagnostic Tests

Solomon¹,

Hashimoto²,

Daltroy³

et al. 1998

JAMA

283

203

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“…There is a wide variation in the ophthalmologists practice in the preference of tests being used in clinical practice. A national survey from St. Lious reported in 1995, and showed that a considerable number of ophthalmologists did not perform such tests to make a firm diagnosis (6).…”

Section: Discussionmentioning

confidence: 99%

Assessment of macular function in dense cataract using Maddox rod

Memon

Kazmi²,

Nazeer³

et al. 2022

LMRJ

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Cataract is a leading cause of blindness worldwide. However there is surgical option available for treatment with complete cure in majority of patients. For dense cataract Maddox Rod was evaluated. A total of 200 patients were recruited. Maddox Rod test for macular function appears to be useful in a great majority of patients. The assessment of macular function in dense cataract is difficult but the Psycho physiological test like Maddox rod test was found to be the reliable in patients with cataract and its quick and understandable

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“…A survey that was performed among clinicians established that only 19% of them measure CSF sometimes or always, as a part of preoperative evaluation before cataract surgeries 27,28 . Furthermore, measuring mesopic or scotopic CSF are still investigational rather than clinical examinations.…”

Section: Introductionmentioning

confidence: 99%

Scotopic contrast sensitivity test: a rapid method for evaluating foveal functions

Mandel

Belkin

Yehezkel

et al. 2005

Ophthalmic Technologies XV

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Contrast sensitivity function (CSF) measures the overall sensitivity of the visual system from the retina to the visual cortex. There are numerous diseases, clinical and physiological conditions as well as aging processes that can influence the CSF. METHODSThe 22 subjects (8 male and 14 females) ranging in age from 19 to 75 years that participated in the study were divided into two groups -below and above 50 years of age. The older patients were all pseudophakic. All subjects underwent complete eye examination and were refracted and corrected for the trial's working distance of 1.5 meter. Scotopic CSF was tested monocularly after 3 minutes of dark adaptation by a computerized method using Gabor patches as targets with spatial frequencies between 1.5-6 cycles per degree (cpd). The test was conducted in a completely darkened room, with the monitor covered with neutral density filters having a luminance of 0.35 cd/m 2 . RESULTSThe mean CSF for the older age group was 11.6, 10.3, 5.5, 2.9 for 1.5, 2.25, 3, 6 cpd respectively while the mean CSF for the younger age was 20.7, 9.8, 3.8, for the frequencies of 1.5, 3, 6 cpd respectively. Univariant analysis had found the association between CSF and both age group and spatial frequencies to be statistically significant (p=0.027, p<0.001 for age group and spatial frequency, respectively). A fair negative correlation between age and the darkadapted contrast sensitivity was calculated (correlation coefficient=-0.35, p=0.004, adjusted for spatial frequency). CONCLUSIONCSF under nearly scotopic conditions declines with age, a decline that can only partially explained by preneuronal factors. In both age groups the CSF declines with increasing spatial frequency. In most of the older subjects the 6 cpd Gabor patches were too difficult to detect. This selective CSF loss may reflect either reduction in cone spacing, or decreased efficiency of neural processing from the fovea to the cortex. The fact that the younger subjects are sensitive to the higher spatial frequencies and the fact that the test was performed only after 3 minutes of adaptation, support our assumption that we are measuring a foveal function. The simplicity, duration and personal computer compatibility make the procedure practical and readily available for use in clinical settings.

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Variation in Ophthalmic Testing Prior to Cataract Surgery

Cited by 19 publications

References 3 publications

Techniques to Improve Physicians' Use of Diagnostic Tests

Techniques to Improve Physicians' Use of Diagnostic Tests

Assessment of macular function in dense cataract using Maddox rod

Scotopic contrast sensitivity test: a rapid method for evaluating foveal functions

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