Comparison of Dioptron Nova Refractive Data with Conventional Refractive Data

Perrigin, David; Grosvenor, Theodore; Reis, Alan; Perrigin, Judith

doi:10.1097/00006324-198407000-00010

Cited by 5 publications

(4 citation statements)

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“…Various autorefractor models have been studied and their reliability and validity reported in the literature, 5,20 including the Retinomax. [21][22][23][24] The Retinomax has primarily been studied in pediatric subjects owing to its potential usefulness in screening because of its portability.…”

Section: Discussionmentioning

confidence: 99%

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Trial Frame Refraction versus Autorefraction among New Patients in a Low-Vision Clinic

DeCarlo¹,

McGwin

Searcey³

et al. 2013

Invest. Ophthalmol. Vis. Sci.

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PURPOSE. To determine the relationship between refractive error as measured by autorefraction and that measured by trial frame refraction among a sample of adults with vision impairment seen in a university-based low-vision clinic and to determine if autorefraction might be a suitable replacement for trial frame refraction. METHODS.A retrospective chart review of all new patients 19 years or older seen over an 18-month period was conducted and the following data collected: age, sex, primary ocular diagnosis, entering distance visual acuity, habitual correction, trial frame refraction, autorefraction, and distance visual acuity measured after trial frame refraction. Trial frame refraction and autorefraction were compared using paired t-tests, intraclass correlations, and Bland-Altman plots. RESULTS.Final analyses included 440 patients for whom both trial frame refraction and autorefraction data were available for the better eye. Participants were mostly female (59%) with a mean age of 68 years (SD ¼ 20). Age-related macular degeneration was the most common etiology for vision impairment (44%). Values for autorefraction and trial frame refraction were statistically different, but highly correlated for the spherical equivalent power (r ¼ 0.92), the cylinder power (r ¼ 0.80) and overall blurring strength (0.89). Although the values of the cross-cylinders J 0 and J 45 were similar, they were poorly correlated (0.08 and 0.15, respectively). The range of differences in spherical equivalent power was large (À8.6 to 4.9).CONCLUSIONS. Autorefraction is highly correlated with trial frame refraction. Differences are sometimes substantial, making autorefraction an unsuitable substitute for trial frame refraction. (Invest Ophthalmol Vis Sci.

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Section: Discussionmentioning

confidence: 99%

“…1 In three trials comparing the spherical equivalent (SE) of autorefraction to subjective refraction, the difference was less than or equal to 60.50 D between 70% and 74% of the time. [3][4][5] Because there are occasionally larger errors, however, the authors concluded that autorefraction cannot replace subjective refraction in routine clinical practice.…”

mentioning

confidence: 99%

Trial Frame Refraction versus Autorefraction among New Patients in a Low-Vision Clinic

DeCarlo¹,

McGwin

Searcey³

et al. 2013

Invest. Ophthalmol. Vis. Sci.

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“…No subject had any measurable vertical phoria, and all had fine stereopsis of at least 96 %. The Dioptron Nova has a relatively high false-positive rate for indicating myopia (Grosvenor, Perrigin, & Perrigin, 1985;Perrigin, Grosvenor, Reis, & Perrigin, 1984); therefore, Ortho-Rater values were used to screen out myopes. The Dioptron Nova was used to screen out hyperopia and astigmatism.…”

Section: Subjectsmentioning

confidence: 99%

The effects of ingested alcohol on accommodative, fusional, and dark vergence

Miller

Pigion

Takahama

1986

Perception & Psychophysics

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To examine the effects of ingested alcohol on vergence, we measured vergence in 8 male emmetropes, aged 21-23 years, under two alcohol dosage conditions (placebo and 1.5 ml/kg of 95% ethanol). For each ofthese conditions, after consumption of the appropriate drink, dark vergence and fusional and accommodative vergence to near and far targets (viewing distance = 30 cm and 6 cm) were assessed every 30 min for a total of 6 h. Intoxi~ation produced significant increases in convergence for far fusional and far accommodative targets. Intoxication also led to a tendency toward decreased convergence for near fusional and near accommodative targets, although the results were less clear than in the case of the far viewing conditions. Dark vergence did not change with intoxication; it also did not appear to be significantly related to other-alcohol-induced vergence changes, although the size of the sample made it impossible to reach meaningful conclusions regarding this last point.

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“…Für eine Verordnung einer optischen Korrektur muss vorab eine Refraktionsbestimmung erfolgen. Zu den Verfahren der objektiven Refraktionsbestimmung zählen u. a. die Skiaskopie [5 -8], die Refraktometrie [4,10,18,19,21,22,27] und die Fotorefraktionsbestimmung [1, 13 -15]. Da die Fotorefraktionsbestimmung mit erheblichen Fehlermçglichkeiten belastet ist und eigentlich nur bei Screeninguntersuchungen Anwendung findet, wird sie in dieser Studie nicht berücksichtigt.…”

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Vergleich der manuellen und automatischen Refraktionsbestimmung mit dem subjektiven Abgleich

Wübbolt

Alven²,

Hülssner³

et al. 2006

Klin Monatsbl Augenheilkd

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The Auto Refractometer provides measurements with the smallest deviation compared to the subjective method. Here it has to be taken into account that the measurements for the sphere have an average deviation of + 0.2 dpt. In comparison to retinoscopy the examination of children with the RM-A 7000 is difficult. An advantage of the Auto Refractometer is the fast and easy handling, so that measurements can be performed by medical staff.

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Comparison of Dioptron Nova Refractive Data with Conventional Refractive Data

Cited by 5 publications

References 0 publications

Trial Frame Refraction versus Autorefraction among New Patients in a Low-Vision Clinic

Trial Frame Refraction versus Autorefraction among New Patients in a Low-Vision Clinic

The effects of ingested alcohol on accommodative, fusional, and dark vergence

Vergleich der manuellen und automatischen Refraktionsbestimmung mit dem subjektiven Abgleich

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