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American journal of optometry and physiological optics最新文献

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pH and H2O2 concentration of hydrogen peroxide disinfection systems. 过氧化氢消毒系统的pH和H2O2浓度。
American journal of optometry and physiological optics Pub Date : 1988-07-01 DOI: 10.1097/00006324-198807000-00002
M G Harris, J Torres, L Tracewell
{"title":"pH and H2O2 concentration of hydrogen peroxide disinfection systems.","authors":"M G Harris,&nbsp;J Torres,&nbsp;L Tracewell","doi":"10.1097/00006324-198807000-00002","DOIUrl":"https://doi.org/10.1097/00006324-198807000-00002","url":null,"abstract":"<p><p>Hydrogen peroxide disinfection has caused discomfort for some soft contact lens wearers even though the solution was neutralized properly. The discomfort could be due to the endpoint pH of the system used or the residual H2O2 concentration. Using a digital pH meter and H2O2 concentration detection strips, we measured the pH and H2O2 concentration of seven different hydrogen peroxide disinfection systems over their recommended disinfection and neutralization cycles to determine their time courses and endpoint values. The final pH of the seven systems varied from 6.15 to 7.74 pH units. All systems resulted in residual H2O2 concentrations below threshold values. These findings indicated that the final pH may be the cause of patient discomfort after hydrogen peroxide disinfection and neutralization.</p>","PeriodicalId":7700,"journal":{"name":"American journal of optometry and physiological optics","volume":"65 7","pages":"527-35"},"PeriodicalIF":0.0,"publicationDate":"1988-07-01","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"https://sci-hub-pdf.com/10.1097/00006324-198807000-00002","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"14336702","PeriodicalName":null,"FirstCategoryId":null,"ListUrlMain":null,"RegionNum":0,"RegionCategory":"","ArticlePicture":[],"TitleCN":null,"AbstractTextCN":null,"PMCID":"","EPubDate":null,"PubModel":null,"JCR":null,"JCRName":null,"Score":null,"Total":0}
引用次数: 17
Comparison of vertical fixation disparities between essential hypertensives and matched normotensives. 原发性高血压患者与匹配正常血压患者垂直固定差异的比较。
American journal of optometry and physiological optics Pub Date : 1988-07-01 DOI: 10.1097/00006324-198807000-00005
R D Fancher, N Roth, D O Schuman, S D Shaffer, J Schank, R L Yolton
{"title":"Comparison of vertical fixation disparities between essential hypertensives and matched normotensives.","authors":"R D Fancher,&nbsp;N Roth,&nbsp;D O Schuman,&nbsp;S D Shaffer,&nbsp;J Schank,&nbsp;R L Yolton","doi":"10.1097/00006324-198807000-00005","DOIUrl":"https://doi.org/10.1097/00006324-198807000-00005","url":null,"abstract":"<p><p>Using American Optical Vectographs and a Disparometer, vertical fixation disparities and associated phorias were measured on 19 essential hypertensives and 19 matched normotensives. Subjects were matched on the basis of race, sex, age, use of tobacco, and family history of hypertension. Correlated variance comparisons of the measured associated phorias and fixation disparities, as well as calculated x and y intercepts derived from forced-duction vertical fixation disparity curves were made and a t-test for related measures was used to compare slopes. The x and y intercepts and slope data showed no significant differences between the groups. However, statistically larger measured associated phorias for the hypertensive group were found on all but one test. This suggests a relation between the magnitude of vertical associated phorias and the occurrence of essential hypertension, but the relation found was not of sufficient strength to warrant clinical application.</p>","PeriodicalId":7700,"journal":{"name":"American journal of optometry and physiological optics","volume":"65 7","pages":"552-60"},"PeriodicalIF":0.0,"publicationDate":"1988-07-01","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"https://sci-hub-pdf.com/10.1097/00006324-198807000-00005","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"14336704","PeriodicalName":null,"FirstCategoryId":null,"ListUrlMain":null,"RegionNum":0,"RegionCategory":"","ArticlePicture":[],"TitleCN":null,"AbstractTextCN":null,"PMCID":"","EPubDate":null,"PubModel":null,"JCR":null,"JCRName":null,"Score":null,"Total":0}
引用次数: 0
Standardization of the tangent screen examination: some neglected parameters. 切线筛检测的标准化:一些被忽视的参数。
American journal of optometry and physiological optics Pub Date : 1988-07-01 DOI: 10.1097/00006324-198807000-00008
R W West
{"title":"Standardization of the tangent screen examination: some neglected parameters.","authors":"R W West","doi":"10.1097/00006324-198807000-00008","DOIUrl":"https://doi.org/10.1097/00006324-198807000-00008","url":null,"abstract":"<p><p>Usually two factors are not rigidly standardized in the routine tangent screen examination: (1) the stimulus characteristics of the carrier that fixes the spot to the wand, and (2) patient instructions about what aspects of the stimulus they should attend to. Differences in these factors within the range of what is commonly done in the tangent screen test can lead to significant differences in the locations of the isopters. There is also an interesting interaction between these two factors in establishing isopter size.</p>","PeriodicalId":7700,"journal":{"name":"American journal of optometry and physiological optics","volume":"65 7","pages":"580-4"},"PeriodicalIF":0.0,"publicationDate":"1988-07-01","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"https://sci-hub-pdf.com/10.1097/00006324-198807000-00008","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"14336706","PeriodicalName":null,"FirstCategoryId":null,"ListUrlMain":null,"RegionNum":0,"RegionCategory":"","ArticlePicture":[],"TitleCN":null,"AbstractTextCN":null,"PMCID":"","EPubDate":null,"PubModel":null,"JCR":null,"JCRName":null,"Score":null,"Total":0}
引用次数: 4
On writing grant proposals: confessions of two grant reviewers. 论撰写拨款建议:两位拨款审稿人的自白。
American journal of optometry and physiological optics Pub Date : 1988-07-01
D G Pelli, D M Levi
{"title":"On writing grant proposals: confessions of two grant reviewers.","authors":"D G Pelli,&nbsp;D M Levi","doi":"","DOIUrl":"","url":null,"abstract":"","PeriodicalId":7700,"journal":{"name":"American journal of optometry and physiological optics","volume":"65 7","pages":"598"},"PeriodicalIF":0.0,"publicationDate":"1988-07-01","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"14336709","PeriodicalName":null,"FirstCategoryId":null,"ListUrlMain":null,"RegionNum":0,"RegionCategory":"","ArticlePicture":[],"TitleCN":null,"AbstractTextCN":null,"PMCID":"","EPubDate":null,"PubModel":null,"JCR":null,"JCRName":null,"Score":null,"Total":0}
引用次数: 0
Complications reported with hydrogel extended wear contact lenses. 水凝胶延长戴式隐形眼镜并发症报告。
American journal of optometry and physiological optics Pub Date : 1988-07-01
P S Soni, G Hathcoat
{"title":"Complications reported with hydrogel extended wear contact lenses.","authors":"P S Soni,&nbsp;G Hathcoat","doi":"","DOIUrl":"","url":null,"abstract":"<p><p>We conducted a survey to evaluate the incidence of various complications associated with extended wear (EW) contact lenses. Of the 137 surveys sent out, 44 responded, 15 with data. The analysis indicates: (1) EW contact lens patients receive nonuniform care, evident from the fact that the EW follow-up to EW dispensing ratio varied between 1.6 and 16.75; (2) the incidence of epithelial microcysts, striae, and giant papillary conjunctivitis (GPC) was found to be considerably lower than that reported previously; (3) the incidence of \"red-eye\" response and corneal ulcers was calculated to be within the lower end of the range of previously reported research; and (4) there may be a seasonal variation in the incidence of GPC and red-eye response as indicated by an increase in both conditions during the month of March as compared to February.</p>","PeriodicalId":7700,"journal":{"name":"American journal of optometry and physiological optics","volume":"65 7","pages":"545-51"},"PeriodicalIF":0.0,"publicationDate":"1988-07-01","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"14336703","PeriodicalName":null,"FirstCategoryId":null,"ListUrlMain":null,"RegionNum":0,"RegionCategory":"","ArticlePicture":[],"TitleCN":null,"AbstractTextCN":null,"PMCID":"","EPubDate":null,"PubModel":null,"JCR":null,"JCRName":null,"Score":null,"Total":0}
引用次数: 0
Pressure testing of ophthalmic safety lenses: the effects on different materials. 眼科安全镜片的压力测试:对不同材质的影响。
American journal of optometry and physiological optics Pub Date : 1988-07-01 DOI: 10.1097/00006324-198807000-00009
S J Dain
{"title":"Pressure testing of ophthalmic safety lenses: the effects on different materials.","authors":"S J Dain","doi":"10.1097/00006324-198807000-00009","DOIUrl":"https://doi.org/10.1097/00006324-198807000-00009","url":null,"abstract":"<p><p>The procedure of applying pressure to a lens until fracture occurs and the use of the fracture pressure as a measure of lens strength has been proposed as a quantitative alternative to the drop ball test. The fracture pressure or pressure resistance of untempered, thermally tempered, and chemically tempered glass lenses and CR39 lenses were compared. The results for the glass lenses were consistent with workplace experience and previous studies using the drop ball test. The results for glass and CR39 lenses showed the reverse to what was expected. In order to investigate the basis of this difference, a second procedure was followed in which the annulus supporting the lens and the steel ball applying the pressure to the lens were systematically changed. Glass lenses showed a highly statistically significant change in fracture pressure with decreasing ball size and a small but statistically significant change with annulus size. CR39 lenses showed no statistically significant change in fracture pressure with changing ball size but a highly statistically significant increase in fracture pressure with increasing annulus size. The mechanism of fracture is known to differ in the glass and plastics materials and it is concluded that this method should not be used to compare the performance of different materials.</p>","PeriodicalId":7700,"journal":{"name":"American journal of optometry and physiological optics","volume":"65 7","pages":"585-90"},"PeriodicalIF":0.0,"publicationDate":"1988-07-01","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"https://sci-hub-pdf.com/10.1097/00006324-198807000-00009","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"14336707","PeriodicalName":null,"FirstCategoryId":null,"ListUrlMain":null,"RegionNum":0,"RegionCategory":"","ArticlePicture":[],"TitleCN":null,"AbstractTextCN":null,"PMCID":"","EPubDate":null,"PubModel":null,"JCR":null,"JCRName":null,"Score":null,"Total":0}
引用次数: 6
On writing grant proposals: confessions of two grant reviewers. 论撰写拨款建议:两位拨款审稿人的自白。
American journal of optometry and physiological optics Pub Date : 1988-07-01 DOI: 10.1097/00006324-198807000-00012
D. Pelli, D. Levi
{"title":"On writing grant proposals: confessions of two grant reviewers.","authors":"D. Pelli, D. Levi","doi":"10.1097/00006324-198807000-00012","DOIUrl":"https://doi.org/10.1097/00006324-198807000-00012","url":null,"abstract":"","PeriodicalId":7700,"journal":{"name":"American journal of optometry and physiological optics","volume":"40 11 1","pages":"598"},"PeriodicalIF":0.0,"publicationDate":"1988-07-01","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"77807221","PeriodicalName":null,"FirstCategoryId":null,"ListUrlMain":null,"RegionNum":0,"RegionCategory":"","ArticlePicture":[],"TitleCN":null,"AbstractTextCN":null,"PMCID":"","EPubDate":null,"PubModel":null,"JCR":null,"JCRName":null,"Score":null,"Total":0}
引用次数: 2
Performance of the standard pseudoisochromatic plate test. 标准伪等色板试验性能。
American journal of optometry and physiological optics Pub Date : 1988-07-01 DOI: 10.1097/00006324-198807000-00006
V J Honson, S J Dain
{"title":"Performance of the standard pseudoisochromatic plate test.","authors":"V J Honson,&nbsp;S J Dain","doi":"10.1097/00006324-198807000-00006","DOIUrl":"https://doi.org/10.1097/00006324-198807000-00006","url":null,"abstract":"<p><p>The Standard pseudoisochromatic Plate (SPP) test was administered to 346 normals, 55 anomalous trichromats, and 46 dichromats. Its ability to detect and classify congenital color defectives was assessed. The performance of each plate was assessed separately and compared with its colorimetric properties. The test as a whole achieves a high level of accuracy in separating normals from color vision defectives [Youden's Index (YI) = 92.4%] and a high reliability (71.3%) in classification of the congenital color vision defectives. The performance of individual plates in separating color normals and color vision defectives of individual plates varies (YI ranges from 69.8 to 86.1%). A set of three plates can be chosen, which achieves a performance similar to that of the whole test. The test is found to be a reliable clinical screening method for congenital red-green color vision defectives.</p>","PeriodicalId":7700,"journal":{"name":"American journal of optometry and physiological optics","volume":"65 7","pages":"561-70"},"PeriodicalIF":0.0,"publicationDate":"1988-07-01","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"https://sci-hub-pdf.com/10.1097/00006324-198807000-00006","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"14393084","PeriodicalName":null,"FirstCategoryId":null,"ListUrlMain":null,"RegionNum":0,"RegionCategory":"","ArticlePicture":[],"TitleCN":null,"AbstractTextCN":null,"PMCID":"","EPubDate":null,"PubModel":null,"JCR":null,"JCRName":null,"Score":null,"Total":0}
引用次数: 14
Changes in accommodation with age: static and dynamic. 适应能力随年龄的变化:静态和动态。
American journal of optometry and physiological optics Pub Date : 1988-06-01 DOI: 10.1097/00006324-198806000-00009
F C Sun, L Stark, A Nguyen, J Wong, V Lakshminarayanan, E Mueller
{"title":"Changes in accommodation with age: static and dynamic.","authors":"F C Sun,&nbsp;L Stark,&nbsp;A Nguyen,&nbsp;J Wong,&nbsp;V Lakshminarayanan,&nbsp;E Mueller","doi":"10.1097/00006324-198806000-00009","DOIUrl":"https://doi.org/10.1097/00006324-198806000-00009","url":null,"abstract":"<p><p>Accommodative amplitude decreases with age, not with aging. The decrease is largely completed by age 40 years; only minor residual accommodation is present in most subjects after the mid-40s. Dynamical measurements show the accommodative response of subjects over 30 years of age to be significantly slowed (time constants of accommodation increases). Accommodation amplitude is less than 3 D by 30 years of age. Thus prepresbyopia is a sign of continual development, not of deterioration of the accommodative mechanism. Accommodation, or the change of clear vision with change in lens power, has been studied by many distinguished scientists including Descartes and Thomas Young. Helmholtz's \"Theory of Accommodation\" is a dual, indirect, active theory. There are both lenticular, including lens and capsule, and also extralenticular mechanisms, comprised of the zonule of Zinn or suspensory ciliary ligament and the ciliary muscle itself. The ciliary muscle does not act directly on the lens but indirectly through its action on the zonule of Zinn. Active contraction of the ciliary muscle, a unified muscle, produces accommodation; relaxation of the ciliary muscle permits relaxation of accommodation.</p>","PeriodicalId":7700,"journal":{"name":"American journal of optometry and physiological optics","volume":"65 6","pages":"492-8"},"PeriodicalIF":0.0,"publicationDate":"1988-06-01","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"https://sci-hub-pdf.com/10.1097/00006324-198806000-00009","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"14538403","PeriodicalName":null,"FirstCategoryId":null,"ListUrlMain":null,"RegionNum":0,"RegionCategory":"","ArticlePicture":[],"TitleCN":null,"AbstractTextCN":null,"PMCID":"","EPubDate":null,"PubModel":null,"JCR":null,"JCRName":null,"Score":null,"Total":0}
引用次数: 83
Explanation of Broca's pupillometer. 布洛卡瞳孔计的解释。
American journal of optometry and physiological optics Pub Date : 1988-06-01 DOI: 10.1097/00006324-198806000-00011
R. West
{"title":"Explanation of Broca's pupillometer.","authors":"R. West","doi":"10.1097/00006324-198806000-00011","DOIUrl":"https://doi.org/10.1097/00006324-198806000-00011","url":null,"abstract":"Broca's pupillometer offers a simple and effective means of measuring the diameter of the pupil. However, it is often used without proper attention to the limitations of its optics. Errors of measurement may result from uncorrected refractive error, accommodation, spectacle correction, and spherical aberration (SA). A simple means of minimizing these errors is to hold the pinholes (PH's) of the pupillometer as close to the cornea as is feasible.","PeriodicalId":7700,"journal":{"name":"American journal of optometry and physiological optics","volume":"9 1","pages":"506-11"},"PeriodicalIF":0.0,"publicationDate":"1988-06-01","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"78043362","PeriodicalName":null,"FirstCategoryId":null,"ListUrlMain":null,"RegionNum":0,"RegionCategory":"","ArticlePicture":[],"TitleCN":null,"AbstractTextCN":null,"PMCID":"","EPubDate":null,"PubModel":null,"JCR":null,"JCRName":null,"Score":null,"Total":0}
引用次数: 2
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