Search PubMed⌕ Search

SEARCH · Search PubMed

Results for “PHOTOGRAPHY”

Search indexed PubMed citations on genomics, clinical trials, systematic reviews and public health. Explore titles, authors and supplied subject terms, then open the PubMed record.

Quote a phrase for an exact phrase match. Source license links do not imply unrestricted reuse.

At least 127 records · Page 7Linked to original sources

Comparison of two reference standards in validating two field mydriatic digital photography as a method of screening for diabetic retinopathy.

AIM: To compare two reference standards when evaluating a method of screening for referable diabetic retinopathy. METHOD: Clinics at Oxford and Norwich Hospitals were used in a two centre prospective study of 239 people with diabetes receiving an ophthalmologist's examination using slit lamp biomicroscopy, seven field 35 mm stereophotography and two field mydriatic digital photography. Patients were selected from those attending clinics when the ophthalmologist and ophthalmic photographer were able to attend. The main outcome measures were the detection of referable diabetic retinopathy as defined by the Gloucestershire adaptation of the European Working Party guidelines. RESULTS: In comparison with seven field stereophotography, the ophthalmologist's examination gave a sensitivity of 87.4% (confidence interval 83.5 to 91.5), a specificity of 94.9% (91.5 to 98.3), and a kappa statistic of 0.80. Two field mydriatic digital photography gave a sensitivity of 80.2% (75.2 to 85.2), specificity of 96.2% (93.2 to 99.2), and a kappa statistic of 0.73. In comparison with the ophthalmologist's examination, two field mydriatic digital photography gave a sensitivity of 82.8% (78.0 to 87.6), specificity of 92.9% (89.6 to 96.2), and a kappa statistic of 0.76. Seven field stereo gave a sensitivity of 96.4% (94.0 to 98.8), a specificity of 82.9% (77.4 to 88.4), and a kappa statistic of 0.80. 15.3% of seven field sets, 1.5% of the two field digital photographs, and none of the ophthalmologist's examinations were ungradeable. CONCLUSION: An ophthalmologist's examination compares favourably with seven field stereophotography, and two field digital photography performs well against both reference standards.

Adult↗

Optic disc and visual field changes in a prospective longitudinal study of patients with glaucoma: comparison of scanning laser tomography with conventional perimetry and optic disc photography.

OBJECTIVE: To investigate the relationship between optic disc changes measured with scanning laser tomography and those measured with conventional perimetry and optic disc photography. METHODS: In a prospective longitudinal study, we followed up 77 patients with early glaucomatous visual field damage. Scanning laser tomography (using the Heidelberg Retina Tomograph) and conventional perimetry (using the Humphrey Field Analyzer) were carried out every 6 months. Disc progression was determined by a procedure recently described by us for scanning laser tomography, with confirmed progression requiring repeatable changes based on probability limits for both the depth (using individual test-retest variability values) and size of change (determined in a group of 37 healthy individuals also followed up prospectively). Field progression was determined with the Statpac Glaucoma Change Probability Analysis. The agreement between scanning laser tomography and conventional disc photography was determined in a subgroup of patients. RESULTS: Patients were followed up for a median of 5.5 years, with a median of 12 sets of examinations with scanning laser tomography and conventional perimetry. Twenty-one patients (27%) showed no progression with either technique. Thirty-one patients (40%) progressed with scanning laser tomography only, while 3 (4%) progressed with conventional perimetry only. Of the 22 patients (29%) who progressed with both techniques, 10 (45%) progressed with scanning laser tomography first (median, 18 month earlier) and 9 (41%) with conventional perimetry first (median, 12 months earlier), while 3 (14%) progressed at the same time. Of the 16 patients with disc photographs that closely overlapped the follow-up, there was concordance between scanning laser tomography and disc photography in 13 patients (81%). CONCLUSIONS: Glaucomatous disc changes determined with scanning laser tomography occur more frequently than field changes. Most patients with field changes also had disc changes; however, less than half of those with disc changes had field changes.

Adult↗

Biomicroscopic evaluation and photography of posterior vitreous detachment.

This is a preliminary effort to demonstrate conditions of the posterior vitreous more objectively by slit-lamp photography. For this purpose, a + 58.6-diopter, aspherical, preset lens (El Bayadi-Kajiura lens [Nikon]) and a photoslit (Zeiss Jena) were used. The most fundamental aspect in our technique of observation and photography of the posterior vitreous is that of catching the appropriate moment during the vitreous movement that follows horizontal and/or vertical displacement of the patient's eye. Posterior vitreous photographs by this method in normal eyes, retinitis pigmentosa, Wagner's disease, and preretinal macular fibrosis associated with macular edema in phakic eyes are presented, and biomicroscopic characteristics in each of these diseases are discussed. Our observations clearly demonstrate a new technique for detailed examination and photography of the posterior vitreous.

Adult↗

Early detection of diabetic retinopathy by a mobile retinal photography service working in partnership with primary health care teams.

Community-wide fundus photography was organized for early detection of diabetic retinopathy (DR) by mobile teams. High-quality three-field Kodachrome fundus photography, performed according to the London Protocol through dilated pupils was offered free of charge to primary care; images were taken in the community and assessed centrally. Data are presented from the first 80 primary health care centres (PHCCs) participating, serving 990,000 (about 60%) of inhabitants in Stockholm County. Beginning in 1990, 6863 diabetes patients were invited by PHCCs; 5490 (80%) attended. We reached 77% of persons with known diabetes; only 37% had had their eyes examined during the preceding 2 years. For 97% of patients, images were assessable. DR was present in 34% of patients (non-proliferative DR not requiring further assessment 29%, non-proliferative DR requiring further assessment 1.1%, proliferative DR 0.5% and macular involvement 3.6%). Re-examination after 2 years was offered to 64%; follow-up photography after 1 year to 24%. Fluorescein angiography and/or photocoagulation treatment was performed in 3.6%. This method of early diagnosis is feasible, acceptable, and reached twice as many patients as did the usual referral-based system of care. We now plan to extend this service to cover the whole county.

Adolescent↗

Photographic surgery: standards in clinical photography.

The role of clinical photography in aesthetic plastic surgery requires it to set high standards for the quality of the photos taken. The comparable portrayal of a series of dynamic changes leaves little room for artefacts. Even very small variations in the pictures may cause drastic changes in the value of clinical photography in aesthetic plastic surgery. The basic variations are discussed and illustrated. It is stressed that unless stringent criteria for clinical photography are met, photographs lose their value with regard to both patients and their didactic value for surgeons. This has implications not only for the individual surgeon, but also for the art of aesthetic plastic surgery as a whole.

Humans↗

Simplified new approach to endoscopic photography.

Information obtained by endoscopic examination can be shared with others by viewing sequentially through the same endoscope, "teaching attachments" allowing viewing ports through the same instrument, drawings based on the observers' recollection of the findings, and by endoscopic photography. Of these methods, endoscopic photography has the important advantages of speed and faithfulness of reproduction. Herein, we describe a simple technique for endoscopic color still-photography with illustrations of normal and pathologic findings.

Cystoscopy↗

Computerized digital photography in auditory research: a comparison of publication-quality digital printers with traditional darkroom methods.

Digital photography is the rapidly developing field of computer processing of images generated either directly from a digital camera or from scanned conventional film. Subsequent photographs output from digital color printers are publication-quality and superior to conventional darkroom prints because of greater image control (exposure, contrast, color correction). Because final print quality is the most critical factor in the research application of digital photography, we evaluated the photographic output of several continuous-tone digital printers. Digital images from selected microscopic sections of the middle and inner ear were generated by scanning black and white film and Ektachrome color transparencies and sent to commercial representatives for printing. Photographs from some printers were as good or better than traditional darkroom prints of the same film when evaluated for resolution, image quality, and costs. It is our hope that the hearing research field will benefit enormously by adoption of chemical-free digital photography because of its quality, convenience, speed, and low cost.

Animals↗

Ultraviolet fluorescence photography: patterns in established pterygia.

PURPOSE: To investigate established pterygia using our newly developed ultraviolet fluorescence photography (UVFP) system. DESIGN: Prospective observational case series. METHODS: setting: Prince of Wales Hospital, Sydney, Australia. study population: Fourteen patients (both eyes) attending the Ophthalmology Clinic at Prince of Wales Hospital for assessment of their established pterygia. There were eight men and six women, with an age range of 26 to 62 years. A total of 15 (75%) of 20 had primary pterygia, and five (25%) of 20 had recurrent pterygia. There were no specific exclusion criteria. observation procedures: Ultraviolet and standard (control) photographs were taken of the nasal and temporal interpalpebral regions bilaterally. main outcome measures: The presence of established pterygia detected by standard photography and the corresponding presence and patterns of areas of fluorescence detected by UVFP. RESULTS: In the 14 patients, 20 established pterygia were identified on standard photography. On UVFP, four patterns of fluorescence of established pterygia were identified. Of the 20 pterygia, six (30%) of 20 demonstrated fluorescence at the leading edge of the pterygium, seven (35%) of 20 demonstrated fluorescence at the limbus, three (15%) of 20 demonstrated fluorescence at both the leading edge and the limbus, and four (20%) of 20 demonstrated no visible fluorescence. CONCLUSIONS: In this study, we describe patterns of fluorescence in established pterygia by UVFP. We hypothesize that the areas of fluorescence represent areas of cellular activity within the pterygium. The patterns of fluorescence may be useful to further understand of pterygium growth and pathogenesis.

Adult↗

Evaluating the eye's rotational stability during standard photography: effect on determining the axial orientation of toric intraocular lenses.

PURPOSE: To evaluate the rotational stability of the eye during standard photography and determine its effect on the measurement of toric intraocular lens (IOL) orientation. SETTING: Department of Ophthalmology, University Erlangen-Nuremberg, Erlangen, Germany. METHODS: The rotational stability of the eye was evaluated using standard photographs taken with a telecentric fundus camera (Zeiss). Two sets of fundus images were taken at least 6 months apart in 400 eyes of 200 patients. The axial position of the eye was determined using 2 characteristic markers of the fundus. The angle between the 2 images (autorotation angle) was measured in each eye. RESULTS: The mean absolute autorotation was 2.3 degrees +/- 1.7 (SD) (range 0 to 11.5 degrees). Nine percent of eyes did not rotate. The rotation was less than 3 degrees in 55% of eyes and was 3 degrees or greater in 36% of eyes. Eyes of patients younger than 50 years rotated less than eyes in older patients (mean 2.2 +/- 1.5 degrees and 2.5 +/- 1.8 degrees, respectively) (P=.04). A visual acuity of 20/20 or better (P=.02) and a refractive cylinder of less than 1.75 diopters (P=.01) were correlated with smaller amounts of autorotation. Potential causes of artificial eye rotation induced by the photographic technique included camera adaptation (3-degree intrinsic error), slide mounting (<1 degree), slide projection (<0.5 degree), marking of characteristic fundus details (<1 degree), and head inclination. CONCLUSIONS: Cyclorotation of the eye during standard photography may lead to overestimation or underestimation of the presumed spontaneous rotation of an implanted toric IOL. Results show that 11.5 degrees of toric IOL rotation would lead to residual astigmatism that is 40% of the initial astigmatic power and 3 degrees, 10% of the initial power. Digital imaging may reduce the intrinsic errors of standard photography.

Adolescent↗

Enhancing spatial estimates of metal pollutants in raw wastewater irrigated fields using a topsoil organic carbon map predicted from aerial photography.

Various approaches have been used to estimate metal pollutant element (TE) contents at unsampled locations in a 15-ha contaminated site located in the plain of Pierrelaye-Bessancourt (about 24 km Northwest of Paris). 87 samples of soil plough layer were randomly sampled at each mesh of a regular square grid over the whole study area and the total contents of Cd, Cr, Cu, Ni, Pb, and Zn were measured. A first set of 50 measurements, randomly selected from the 87 samples, was used for the prediction and another set of 37 measurements was kept for the validation. Topsoil organic carbon contents (SOC) were measured at 75 sites with 50 measurements sharing the same locations as TE. An aerial photography of the study area showing bare soils was selected for relating brightness intensities and SOC. Mapping procedures used were ordinary kriging (OK), cokriging (COK), collocated cokriging (CC), and kriging with external drift (KED). SOC maps used as exhaustively sampled information in KED and CC of TE were obtained by KED and CC procedures, respectively, accounting for 75 SOC measurements and the brightness intensities of numerical counts provided by the visible bands of the aerial photograph bare soils. Consequently, for each TE, four maps were generated: two maps resulting from KED and CC procedures (KED-SOC75P, CC-SOC75P), another one provided by standard cokriging (COK-TE50SOC75) accounting for TE prediction set plus 75 SOC measurements, and the last one corresponding to that estimated by ordinary kriging from only prediction set measurements (OK50). Three indices: (1) the mean prediction error (ME) and the mean absolute prediction error (|ME|); (2) the root mean square error (RMSE); and (3) the relative improvement (RI) of accuracy, as well as residuals analysis, were computed from the validation set (observed data) and predicted values. On the 37 test data, the results showed that the more accurate predictions were systematically those obtained by kriging accounting for SOC map predicted by KED from 75 SOC measurements and brightness values of the aerial photo (KED-SOC75P) followed closely by CC-SOC75P procedure, except for Cu and Zn where CC-SOC75P appeared to be slightly more accurate than KED-SOC75P. In regard to the RI of accuracy between prediction methods, the results confirmed once for all the benefit of accounting for SOC data set plus the exhaustively sampled information provided by the aerial photography regardless of the considered TE. Nevertheless, for Cd, Pb, and Zn, the RI of accuracy was less than 20% between the two most accurate methods (KED-SOC75P and CC-SOC75P) and standard cokriging in which the information provided by the aerial photography is ignored when mapping. The sensitivity of KED-SOC75P and CC-SOC75P approaches to the sampling density of the target variables (TE) was assessed using 10 random subsets of different sizes (25 and 33 observations) drawn from a prediction set that includes 50 data. Results have shown that the TE estimates by KED-SOC75P and CC-SOC75P approaches using only 25 TE samples were much more accurate than the estimates performed by OK50 and COK-TE50SOC75 approaches that use the whole samples of the prediction set. Moreover, the RI of accuracy was reduced by less than 15% if the original sampling density was reduced by a third.

Agriculture↗

Still photography versus videotaping for documentation of cecal intubation: a prospective study.

BACKGROUND: Documentation of cecal intubation is important for credentialing and continuous quality improvement. However, convincing cecal photographs can be difficult to obtain. The aims of the study were to determine (1) the anatomic variations and photographic factors associated with convincing cecal photographs; (2) whether a prospective attempt to capture specific features resulted in more convincing photographs; and (3) how a prospective attempt at capturing convincing cecal features during still photography compares with videotaping as a method of documenting cecal intubation. METHODS: A single examiner evaluating 165 consecutive patients photographed the entire cecum from just distal to the ileocecal valve, the appendiceal orifice, the ileocecal valve orifice, and in the last 110 consecutive cases, the terminal ileum, if it could be intubated. The photographs were then scored by 8 experts according to how convinced they were that cecal intubation had occurred. Features associated with high and low scores were determined, and 50 additional consecutive patients were photographed with a specific effort to capture these features, along with videotaping of the cecum. These photographs and videotapes were then scored by 7 of the 8 experts on a scale of 1 to 5, with 5 representing "definitely the cecum." RESULTS: There was marked variation in scores of still photographs among reviewers. A combination of photographs produced the highest mean score and the highest percentage of scores that were either "probably" or "definitely" of the cecum. The photograph of the cecum from just distal to the ileocecal valve was most convincing and the terminal ileum photograph was least convincing. In the 50 cases in which an attempt was made to capture specific features, mean scores improved for the overall cecal photograph by 0.10, the appendiceal orifice by 0.23, the ileocecal valve lips by 0.20, and the terminal ileum by 0. 19. The cecum, appendiceal orifice, valve lips, and terminal ileum photographs for the last 50 patients were scored higher than those from the first 165 patients by 4, 4, 4, and 5 reviewers, respectively. Videotapes were consistently convincing (overall mean score 4.78 out of 5) and were scored more convincing than the combination of still photos from the final 50 cases by 6 of 7 reviewers. CONCLUSIONS: Still photography of the cecum can be improved somewhat by attempting to capture specific cecal features. However, because of anatomic variation among normal individuals, still photography remains inconsistently convincing. A combination of photographs is most convincing. Videotaping of the cecum is consistently convincing and would appear to serve effectively as a means of documenting cecal intubation rates for the purposes of continuous quality improvement and credentialing.

Cecum↗

In vivo transillumination biomicroscopy and photography of meibomian gland dysfunction. A clinical study.

Meibomian gland transillumination biomicroscopy and infrared photography were performed on 18 patients with clinically evident meibomian gland dysfunction (MGD) and dermatologic rosacea, 22 patients having MGD without evidence of dermatologic rosacea, and 15 unaffected individuals who served as controls. All patients having clinical signs of MGD demonstrated morphologic abnormalities of their meibomian glands by transilluminated biomicroscopy. Patients without dermatologic rosacea were noted to have varying degrees of gland distortion. Moreover, infrared photography documented a loss of the normal grape-like clusters of dark spots that represent the gland, suggesting a loss of glandular acini. Patients with dermatologic rosacea had more severe alterations, including marked distortion and loss of normal gland anatomy. There were no such abnormalities in clinically unaffected individuals. These data demonstrate that transilluminated biomicroscopy and infrared photography have the ability to identify a spectrum of morphologic alterations of the meibomian glands in MGD patients. The authors suggest that these techniques could be used to classify clinical MGD based upon the presence or absence of identifiable meibomian gland abnormalities.

Eyelid Diseases↗

Detection of melanomas in patients followed up with total cutaneous examinations, total cutaneous photography, and dermoscopy.

BACKGROUND: Many factors have been identified as important determinants that increase the risk of malignant melanoma (MM) developing. Patients with classic atypical mole syndrome (CAMS) have multiple such factors and are known to be at high risk for MMs developing. OBJECTIVE: We sought to evaluate the risk for newly diagnosed MMs developing in patients with CAMS and in a heterogeneous group of patients at high risk (ie, those with high-risk non-CAMS [HRNCAMS]) who had 1 or more risk factors: personal history of nonmelanoma skin cancers; family history of melanoma; biopsy specimen-confirmed dysplastic nevi; and meeting 1 or 2 of the 3 CAMS criteria. We also aimed to report our experience treating these patients at high risk with annual total cutaneous examination, total cutaneous photography, and dermoscopy. METHODS: Consecutive medical records from a private dermatology practice were reviewed. A total of 258 patients were selected who fulfilled the criteria of having: (1) total cutaneous photography as an aid for follow-up; (2) total cutaneous examination at least once per year; (3) at least 6 months of clinical follow-up; and (4) no personal history of melanomas. A total of 160 patients with CAMS and 98 with HRNCAMS were included in this study. The 10-year risk for MM developing in these 2 cohorts was computed using the Kaplan-Meier method. RESULTS: In the CAMS cohort, 28 new MMs developed in 19 patients resulting in a cumulative 10-year risk of 14% (95% confidence interval: 7-20). In the HRNCAMS cohort, 10 new MMs developed in 9 patients, and the cumulative 10-year risk was 10% (95% confidence interval: 2-17). The difference between the 2 groups was not statistically significant (P=.91). The MMs diagnosed in both cohorts were either in situ or less than 1 mm in Breslow thickness. There were no MM metastases or MM-related deaths in either cohort during a mean follow-up period of 120 months for the CAMS and 98 months for the HRNCAMS group. CONCLUSION: Both the patients with CAMS and HRNCAMS were at very high risk for MMs developing. The combination of total cutaneous photography, total cutaneous examination, and dermoscopy were used in treating our patients. No MM 1 mm or greater in thickness developed during follow-up in either group.

Adolescent↗

Fluorescence photography in the evaluation of acne.

BACKGROUND: Quantification of acne remains a challenge. It may be difficult to identify lesions by standard flash photography. Previous studies have shown that foci of light in fluorescence photographs correspond to high protoporphyrin IX production by Propionibacterium acnes in open comedones, follicles, and inflammatory lesions. OBJECTIVE: Our purpose was to study the utility of fluorescence photography for evaluation of acne. METHODS: Forty subjects with mild to moderate acne vulgaris were randomly selected to apply either clindamycin 1% topical solution or vehicle twice daily. Counts of acne lesions and flash and fluorescence photographs were obtained at baseline, and at 4, 8, and 12 weeks. RESULTS: At 12 weeks, the treatment group had a larger percentage change in open comedones, less fluorescence in all areas assessed, and a larger percent decrease in fluorescence than the vehicle group. CONCLUSION: Fluorescence photography appears to be a useful tool to chart the course of acne treatment.

Acne Vulgaris↗

Fluorescence photography in the evaluation of hyperpigmentation in photodamaged skin.

BACKGROUND: Treatment-related changes in hyperpigmentation are difficult to quantify with visible light photography, especially when the changes are subtle. OBJECTIVE: Our purpose was to determine the utility and reliability of fluorescence photography to measure changes in mottled and diffuse hyperpigmentation. METHODS: Thirty-two subjects, with mildly to moderately photodamaged skin, completed a 36-week, double-blind, vehicle-controlled study of tretinoin cream 0.025%. Clinical evaluation of hyperpigmentation as well as standard flash photographs and fluorescence photographs were obtained at baseline and week 36. RESULTS: The fluorescence photographs were evaluated blindly and yielded macule counts that decreased significantly from baseline in tretinoin-treated subjects compared with vehicle-treated subjects (31% vs 11% decrease; p = 0.02). Diffuse hyperpigmentation, as evaluated from the fluorescence photographs, decreased 16% from baseline for tretinoin-treated subjects and increased 5% for vehicle-treated subjects (p < 0.01). No significant differences in mottled or diffuse hyperpigmentation were observed between groups through clinical evaluation. CONCLUSION: Fluorescence photography is a noninvasive method that is sensitive in the evaluation and quantification of distribution and changes of mottled and diffuse hyperpigmentation.

Adult↗

Radius and asphericity of the posterior corneal surface determined by corrected Scheimpflug photography.

PURPOSE: To obtain the shape of the posterior corneal surface in a healthy population, using Scheimpflug photography corrected for distortion due to the geometry of the Scheimpflug imaging system and the refraction of the anterior corneal surface. METHODS: The posterior corneas of 83 subjects, ranging in age from 16 to 62 years, were measured in the vertical meridian using corrected Scheimpflug photography. The aspherical shape of the anterior Corneal surface was also determined in conjunction with the correction of Scheimpflug images. RESULTS: The average radius of the anterior corneal surface was 7.87 +/- 0.27 mm (SD), while the average radius of the posterior corneal surface was 6.40 +/- 0.28 mm (SD). The ratio between the posterior and the anterior radius of curvature was 0.81 +/- 0.02. The asphericity of the anterior and the posterior corneal surfaces was 0.82 +/- 0.18 and 0.62 +/- 0.27, respectively. The asphericity of the posterior corneal surface decreased significantly with age. The posterior/anterior asphericity ratio is also dependent on age and was 0.98 +/- 0.17 at 16 years of age and 0.53 +/- 0.30 at 62 years of age. CONCLUSION: Corrected Scheimpflug photography is an appropriate technique for measuring the radius and asphericity of the posterior corneal surface. The asphericity of the posterior corneal surface changes with age.

Adolescent↗

An evaluation of a colour food photography atlas as a tool for quantifying food portion size in epidemiological dietary surveys.

OBJECTIVE: To test the validity of a colour food photography atlas for quantifying portion size eaten compared with weighed foods. DESIGN: The colour food photography atlas was prepared by cooking, weighing and taking digital photographs of three portion sizes of 434 foods and beverages typical of the Italian diet. SUBJECTS AND INTERVENTIONS: In all, 448 male and female volunteers aged 6-60 y from a wide variety of social backgrounds completed 9075 assessments of food portions eaten at lunch and dinner in relation to a set of colour food photographs during 8 weeks of investigation. The amounts of foods eaten by individuals in five different cafeterias in Pavia, Northern Italy, were weighed by trained investigators at the time of serving and, within 5-10 min of the end of the meal, each subject was asked to quantify all foods consumed with reference to one of the three food photographs or in terms of virtual portions among those shown in the photographs. RESULTS: Multiple regression analysis shows that weights of portion sizes chosen from the set of photographs are significantly associated (P<0.05) to weights of eaten portions (beta=0.81; R(2)=0.70) and are independent of age, gender and BMI. The differences between mean weights of the portions chosen by individuals from photographs and mean weights of eaten foods are significant for all food categories (P<0.05), except for bread. However, because of the very large number of observations, the mean differences are very small (range: from +23.2 g (+11.2%) for first courses to -1.3 g (-2.7%) for bread). Bland-Altman plots show that first courses limits of agreement are wide because the dispersion is increasing while weights are rising. CONCLUSIONS: The use of a series of three photographs and virtual portion sizes being associated with relatively small errors, our findings support the validity of using this colour food photography atlas as a tool for quantifying food portion size in epidemiological dietary surveys on different age groups of Italian subjects.

Adolescent↗

Snap-shots of live theatre: the use of photography to research governance in operating room nursing.

The use of photography is an underreported method of research in the nursing literature. This paper explores its use in an ethnographic research project, the fieldwork of which was undertaken by the first author. The aim was to examine the governance of operating room nursing in the clinical setting and the theoretical orientation was the work of Michel Foucault. The focus of this paper is on how photography was used as a means of data generation. To establish some context we begin by drawing on writers from sociology and anthropology to provide an overview of the status of vision and visual research methods in contemporary social research. We then move to a brief discussion of the uses of photography in social research and the limitations imposed by ethical considerations of its use in clinical nursing settings. As well, the process and approach involved in this research project, and issues of analysis are discussed. Three 'snap-shots' of operating room nursing, taken by participants, are presented. Each is analysed in terms of its contributions to the research process as well as its substantive contribution to the theoretical framework and the research aims.

Anthropology, Cultural↗