Arden Contrast Sensitivity Testing in Glaucoma

Stamper, Robert L.; Hsu-Winges, Charlene; Sopher, Michael

doi:10.1001/archopht.1982.01030030955012

Cited by 34 publications

(14 citation statements)

References 9 publications

Supporting

Mentioning

Contrasting

Order By: Relevance

“…During recent years, other sensory procedures, psychophysical and electrophysiological, have been devised that can indicate glaucomatous damage earlier and more reliably than perimetry [25][26][27]. Some studies have concentrated on evaluating whether it would be possible to diagnose glaucoma in patients prior to visual field damage using various contrast-sensitivity tests [28][29][30]. The data from these studies has not demonstrated high enough sensitivity and specificity for contrast sensitivity to be used as a means of early detection of glaucoma.…”

Section: Discussionsupporting

confidence: 47%

FACT contrast sensitivity as a diagnostic tool in glaucoma

et al. 2007

View full text Add to dashboard Cite

show abstract

Section: Discussionsupporting

confidence: 47%

FACT contrast sensitivity as a diagnostic tool in glaucoma

et al. 2007

View full text Add to dashboard Cite

show abstract

“…[6] However, the use of different colored caps may have variable benefit in patients with advanced glaucoma as the disease itself can alter contrast sensitivity and color perception. [1314] Previous studies have shown that patients perception of bottle cap color varies considerably. [15] A study reported that patients reported 102 unique color descriptors to describe the colors of the 11 bottle caps.…”

Section: Discussionmentioning

confidence: 99%

Bottle characteristics of topical international glaucoma medications versus local brands in Saudi Arabia

Al-Jumaian

Malik

Khandekar

et al. 2016

Middle East Afr J Ophthalmol

View full text Add to dashboard Cite

WHAT IS KNOWN AND OBJECTIVE:Physical bottle characteristics differ of brand name topical glaucoma medications and local generic equivalents. This study compares the bottle characteristics of international topical glaucoma brands versus local brands from the Kingdom of Saudi Arabia.METHODS:Data were collected on bottle drum volume, drop volume, bottle squeezability, bottle tip diameter, labels and instructions, cap color coding, and clarity of the drug label. Density-based calculations of drops in bottle volume were assessed using an analytic balance. Bottle tip diameter was measured using 0.05 mm Vernier calipers. A Likert scale-based questionnaire was used to evaluate the subjective opinions of patients on bottle squeezability, clarity of usage and storage instructions, and the consistency of the cap color coding.RESULTS:The volumes of international brands were statistically significantly higher than the local brands (P < 0.001). A number of drops per bottle and tip diameter were comparable between the international local brands. Cap color coding was inconsistent for international and local brands. Patients were dissatisfied with the label font size. Patients reported that the international and local brands were similar in terms of the ease of opening the bottle, instilling a drop, and the clarity of the instructions; but the local brands were subjectively easier to squeeze than international brands.WHAT IS NEW AND CONCLUSIONS:This is the first study to compare bottle characteristics of local Saudi Arabia brands with international brands. The bottle characteristics and patient feedback were similar between the local and international topical glaucoma medications. However, there were differences between the local and international brands in drug volume, bottle squeezability. Hence, patient compliance and drop dosage may differ based on the origin of manufacture.

show abstract

“…Adaptedfrom Hill" based on data from Daubs and Crick. 2 Sponsel, DePaul, Martone, Shields, Ollie, Stewart degree. These sensitivity/specificity curves are nevertheless more definitive than published associations between intraocular pressure and visual fields (Figure 4).…”

Section: Methodsmentioning

confidence: 99%

“…Criteria for abnormal classification are indicated along the curve. Adaptedfrom Hill" based on data from Daubs and Crick 2. …”

mentioning

confidence: 99%

Association of Vistech contrast sensitivity and visual field findings in glaucoma.

Sponsel

DePaul

Martone

et al. 1991

British Journal of Ophthalmology

View full text Add to dashboard Cite

Single eye visual fields and contrast sensitivity were assessed in 60 subjects, who were being followed up in a glaucoma clinic for manifest glaucoma or a suspicion of glaucoma because ofraised intraocularpressure. The Fieldmaster 5000 (static/kinetic perimeter) was used for the visual fields, and a Vistech wall chart sine wave grating test was used for contrast sensitivity measurements. The subjects were divided into three groups -defect (D), suspect (S) and normal (N) -on the basis of their perimetric findings by subjective grading of 16 perimetric scoring categories for each visual field. The mean Vistech sensitivity levels were not found to be significantly different between the D, S, and N field subgroups at any of the five spatial frequencies provided on the test charts (1.5, 3, 6, 12, and 18 cycles per degree). Complex algorithms combining results from two or more spatial frequencies also failed to yield any significant differences between the groups. Diagnostic sensitivity and specificities relating Vistech contrast sensitivity findings to groups N and D never concomitantly exceeded 60%.

show abstract

Arden Contrast Sensitivity Testing in Glaucoma

Cited by 34 publications

References 9 publications

FACT contrast sensitivity as a diagnostic tool in glaucoma

FACT contrast sensitivity as a diagnostic tool in glaucoma

Bottle characteristics of topical international glaucoma medications versus local brands in Saudi Arabia

Association of Vistech contrast sensitivity and visual field findings in glaucoma.

Contact Info

Product

Resources

About