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@#AIM: To evaluate the accuracy of the Plusoptix A09 photorefraction with and without cycloplegia compared to an autorefractometer in pediatric patients.<p>METHODS: We assessed the refractive status of 180 eyes in 90 pediatric patients. Refractions were measured with the Plusoptix A09 photorefractor(Plusoptix GmbH, Nürnberg, Germany)with and without cycloplegia and compared with those obtained by autorefractometer(Topcon KR-8900, Tokyo, Japan)after cycloplegia. Spherical equivalent, spherical power cylindrical power and cylindrical axis J0, J45 values measurements were analyzed with Bland-Altman analysis. <p>RESULTS: The mean age of the patients was 7.48±3.01(range 3 to 13y). Between the non-cycloplegic Plusoptix A09 photorefractometer and the cycloplegic autorefractometer measurements, there was significant difference between spherical power and spherical equivalent values(<i>P</i><0.001)but there was no significant difference between cylindrical power, J0 and J45 values(<i>P</i>>0.05). Between the cycloplegic Plusoptix A09 photorefractometer and the cycloplegic autorefractometer measurements, there was significant difference between spherical power and spherical equivalent values(<i>P</i><0.001)but there was no significant difference between the cylindric power, J0 and J45 values(<i>P</i>>0.05). Bland-Altman correlation analysis revealed an excellent correlation for the spherical power, cylindrical power and spherical equivalent measurements, but poor correlation for J0 and J45 values between the non-cycloplegic, cycloplegic Plusoptix A09 and the cycloplegic autorefractometer measurements.<p>CONCLUSION: To determine refractive errors in children, the Plusoptix A09 measurements with and without cycloplegia can give reliable results. But it is inadequate when measuring the cylindrical axis and high refractive values. This device can be an effective option to detect and screen refractive errors in uncooperative children.
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PURPOSE: To evaluate the objective amplitude of accommodation in various age groups using an autorefractometer and to compare the results with subjective assessments on accommodation. Objective accommodative amplitude of artificial lenses in post-operative cataract patients was also measured. METHODS: In this study, 41 patients who visited Korea University Guro Hospital from July through August 2014 were categorized into 6 different age groups. Accommodative amplitude was measured using long-distance refraction at 5 m and short-distance refraction at 20 cm. In 20 patients, subjective amplitude of accommodation was measured using the minus lens technique and was compared with the measured objective accommodative amplitude. Accommodative amplitude was also measured in 8 patients who received cataract surgery. RESULTS: The mean accommodative ability in normal people was 2.38 D. The age groups of 10-19, 20-29, 30-39, 40-49, 50-59, and over 60 years showed accommodative amplitudes of 3.31 +/- 0.99 D, 3.25 +/- 0.34 D, 3.78 +/- 0.68 D, 1.00 +/- 0.60 D, 0.22 +/- 0.23 D, 0.00 +/- 0.00 D, respectively. The results showed a rapid decrease in accommodative ability of patients older than 40 years and demonstrated a correlation between objective and subjective amplitude of accommodation (Pearson's correlation coefficient 0.838). There was a significant difference between objective and subjective accommodative amplitudes in artificial lenses (p = 0.015), with average objective and subjective measures of 0.10 +/- 0.23 D and 0.59 +/- 0.35 D, respectively. CONCLUSIONS: Measuring amplitude of accommodation using an autorefractometer can be useful in assessing results of presbyopia treatment.
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Humans , Cataract , Korea , PresbyopiaABSTRACT
AIM: To observe the application of Suresight handheld auto- refractometer in measuring diopter of infants in Community Health Service Center. METHODS:Totally 836 cases ( 1 672 eyes ) from June 2013 to December 2013 were examined diopter of infants by Suresight handheld auto-refractometer in Community Health Service Center. RESULTS: Within 1 672 eyes of 836 infants were examined, 202 eyes were diagnosed ametropia, 38 eyes were suspicious, 240 eyes were transferred to the department of ophthalmology, the referral rate was 14.35%; 172 eyes were diagnosed ametropia, and the diagnosis rate of the referral patients was 71. 67%. Among 172 eyes, 46 eyes were provided with corrected glasses, accounting for 2. 75% of the number of screening, and 126 eyes were given intensive monitoring, accounting for 7.54% of the number of screening. CONCLUSION: Application of Suresight handheld auto-refractometer in refraction screening for infants in Community Health Service Center is convenient and effective. With two - way referral between community health service center and department of ophthalmology can monitor and intervene vision development of infants much earlier.
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We studied the utility of hand held autorefractometer on the cycloplegic refraction for poor coorperated children by analyzing the data taken from hand held autorefractometer(Retinomax) and Canon R-10 autorefractometer. Seventy patients(140 eyes) were studied. We divided them into two groups according to the age: Group I included patients less than 4 years, Group II over 4 years. There were no statistic significant differences in the spherical and cylindrical values regardless of age and cooperability in cases of less than 6 diopter but statistic significant difference in cases of high refractive errors (>6 diopter) or cylindrical axis values. In Conclusion, this study revealed that hand held autorefractometer was useful for checking refraction of the poor coorperated children and the spherical and cylindrical values of Retinomax have no differences from the values of R-10 in the cases of less than 6 diopter.