hartinger coincidence refractometer|Objective accommodation measurement with the Grand Seiko : distributing The Hartinger coincidence refractometer, a static Scheiner principal optometer, has been converted to a 30Hz dynamic measurement instrument. The precision of the dynamic . 14 de jan. de 2022 · Home Economics – 1ª Temporada (Home Economics, EUA, 7 de abril à 9 de maio de 2021) Criação: John Aboud, Michael Colton Direção: Dean Holland, .
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Objective accommodation measurement with the Grand Seiko
Three methods were used to stimulate and measure accommodation: (1) subjective push-up test in free space, (2) a near target pushed-up on a near-point rod and the response measured .The Hartinger coincidence refractometer, a static Scheiner principal optometer, has been converted to a 30Hz dynamic measurement instrument. The precision of the dynamic .These include stimulating accommodation with trial lenses or pilocarpine 6% and measuring the accommodative response with an objective optometer such as a Hartinger coincidence refractometer. Objective measures of accommodation should be used to determine whether accommodation can be restored in presbyopes.
First, baseline refraction was measured three times with a Hartinger coincidence refractometer (Carl Zeiss Meditec, Jena, Germany). 43 An accommodative stimulus response function was then measured. Accommodation was stimulated using 2-second stimulus trains, with 10 current amplitudes ranging from 0 μ A up to an amplitude sufficient to produce .Download scientific diagram | Stimulus response functions measured with a Hartinger coincidence refractometer were similar before and 30 minutes after 10% phenylephrine (A–E). (F) Saline control.
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The mean age of all subjects was 26 years. Accommodation was stimulated and measured with 4 techniques. Two subjective measures (focometer and minus-lens procedures) were used. Accommodation was also stimulated with minus-lens-induced blur and with pilocarpine 6% and measured objectively with a Hartinger coincidence refractometer.2 approaches measured with a Hartinger coincidence refractometer, in which accommodation was stimulated with minus lenses to blur and topical pilocarpine 6%. Results: The push-up method overestimated accommodative amplitude relative to objective measures in 28 subjects. Two subjective methods, minus lenses to
A Hartinger Coincidence Refractometer was used to measure the AA, and infrared photorefraction was used to assess the dynamic AR. After the baseline recordings, two doses of 0.1 mL PHCl 10% were instilled topically, separated by 2 minutes. The effects of PHCl on dynamic accommodation were established in terms of peak velocities of accommodation . Resting refraction was measured in both eyes with a Hartinger coincidence refractometer (HCR) (Zeiss, aus JENA, Germany) (Fincham, 1937) three times before and every three minutes after topical .The accommodative amplitudes measured with the Hartinger coincidence refractometer (mean value 0.47 D) correspond to these values. Similar conclusions may be drawn from existing investigative results of the reference group, which are on the same order of magnitude as those of the 1 CU group. Objective accommodation measurements are needed to .
Hartinger coincidence refractometer. Results: Accommodative amplitudes measured with the 2 subjective methods agreed with each other but differed from the objectively measured amplitudes. Objectively measured accommodative amplitudes were similar in all subjects, with a mean of about 7.0 diopters. Accommodation stimulated with pilocarpineHartinger-measured accommodation provides more realistic measurement of accommodative amplitude than the subjective methods tested, especially in the presbyopic population. . and a focometer--and 2 approaches measured with a Hartinger coincidence refractometer, in which accommodation was stimulated with minus lenses to blur and topical . Three Hartinger measurements were recorded for each lens power to generate an accommodation stimulus response curve and to find the maximum accommodative amplitude. Method 5: Pilocarpine-Induced Accommodation Measured with the Hartinger Coincidence Refractometer. Baseline refractions were measured with the Hartinger in both eyes.Coincidence refractometer. "The Hartinger type" with or against its use. Coincidence refractometer. "The Hartinger type" with or against its use Bull Ophthalmol Soc Egypt. 1978;71(75):145-55. Author S S Hussein. PMID: 549711 No .
Recently, there have been studies comparing subjective (push up technique, minus lens blur, push down, defocus) and objective [Hartinger Coincidence Refractometer (HCR) (Carl Zeiss Meditec, Germany), Grand Seiko autorefractor (Grand Seiko Co., Ltd, Japan), and iTrace™ aberrometer (Tracey Technologies, USA)] methods of measurement.16,19-23 .
Carbachol iontophoresis stimulated accommodation was first measured with a Hartinger coincidence refractometer (HCR) two weeks before electrode implantation to determine maximum accommodative amplitudes. EW stimulus-response curves were initially measured with the HCR one month after electrode implantation and then repeated at least six . Abstract Purpose: A clinical evaluation of the Grand Seiko Auto Ref/Keratometer WAM-5500 (Japan) was performed to evaluate validity and repeatability compared with non-cycloplegic subjective refra. The mean age of all subjects was 26 years. Accommodation was stimulated and measured with 4 techniques. Two subjective measures (focometer and minus-lens procedures) were used. Accommodation was also stimulated with minus-lens-induced blur and with pilocarpine 6% and measured objectively with a Hartinger coincidence refractometer.Hartinger Coincidence Refractometer, supplied by Carl Zeiss, used in various techniques. Bioz Stars score: 86/100, based on 1 PubMed citations. ZERO BIAS - scores, article reviews, protocol conditions and more
A static accommodative stimulus response function was measured with a Hartinger coincidence refractometer (HCR) (Zeiss, Jena, Germany)(Fincham, 1937a). Increasing current amplitudes were delivered to the EW nucleus to achieve the full range of accommodative responses available to each eye. In addition, for two of the monkeys, one supramaximal .Of these, there are manual methods of measurement including the minus lens method, the near point of convergence method employing the Prince rule, and dynamic retinoscopy, as well as automated devices such as the Hartinger Coincidence Refractometer and the infrared consensual accommodation test (iCAT). Carbachol iontophoresis stimulated accommodation was first measured with a Hartinger coincidence refractometer (HCR) two weeks before electrode implantation to determine maximum accommodative amplitudes. EW stimulus-response curves were initially measured with the HCR one month after electrode implantation and then repeated at least six .
Hartinger coincidence refractometer. The refractive status of chicken eyes was measured using a modified Hartinger coincidence refractometer as described previously 54. Briefly, under isoflurane .with an instrument such as a Hartinger coincidence refractometer, which allows measurement through 1 to 2 mm diameter pupils [32], enables refraction measurements to be performed over longer post-pilocarpine intervals [12–14]. The pilocarpine-induced accommodative response is affected by iris color owing to absorption of the drug by the iris
Assessment of the Hartinger Coincidence Refractometer as a
e of Optometry, Houston, Texas, USA. Methods: Thirty-one normal subjects with a mean age of 43.7 years (range 31 to 53 years) participated. Accommodation was measured monocularly using 3 subjective approaches—the push-up test, minus lenses to blur, and a focometer—and 2 approaches measured with a Hartinger coincidence refractometer, in which accommodation .
Resting refraction was measured in both eyes with a Hartinger coincidence refractometer (HCR) (Zeiss, aus JENA, Germany) (Fincham, 1937) three times before and every three minutes after topical instillation of the drug for 60 minutes. Following baseline measurements, the contact lens was removed from the right eye, and 0.1 ml of 2% epinephrine .Objective accommodation measurement with the Grand Seiko and Hartinger coincidence refractometer. DM Win-Hall, LA Ostrin, S Kasthurirangan, A Glasser. Optometry and vision science 84 (9), 879-887, 2007. 102: 2007: Attenuation of short wavelengths alters sleep and the IP RGC pupil response.(B) Accommodative amplitude was measured monocularly in 31 subjects aged 31 to 55 years using five different methods: (1) the subjective push-up method, (2) subjective minus to blur, (3) defocus with the Focometer, (4) Hartinger coincidence refractometer (HCR) with trial lenses, and (5) HCR with pilocarpine. In the subjective minus to blur .[Experiences with Hartinger's coincidence refractometer] [Experiences with Hartinger's coincidence refractometer] Klin Monbl Augenheilkd Augenarztl Fortbild. 1956;129(5):678-85. [Article in German] Author H ROTTER. PMID: 13399128 No abstract available. MeSH terms Eye* .
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hartinger coincidence refractometer|Objective accommodation measurement with the Grand Seiko