Buy - Sell or Lease a Pre-Owned HRT 2 or 3 Today.
Welcome. Visionequip offers incredible savings and finance options on all pre-owned and used A-scans, Zeiss OCT’s and Heidelberg HRT’s. Flexible Financing Options, including $100.00 per month for the first 6 months on any equipment lease with buyout option, give you the ability to equip your practice and enhance cash flow. Call 888-783-7891 for details on this special ophthalmic equipment finance program.
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Heidelberg (HRT II)
Pre Owned used HRT 2 Tomographer Heidelberg Retina Tomograph HRT 2 The Heidelberg Retina Tomograph II may be superior to other optic nerve head analyzers for accuracy in 3-dimensional optic nerve head topography. The retinal thickness measurements of the HRT Retina Module create a complete map of the scanned area without interpolating data. Compared to the Edema Index, Retinal Thickness maps may be more useful for tracking disease changes as therapy continues. The 3-D maps are helpful for showing and explaining retinal abnormalities to the patient. Software Modules will vary depending on instrument; please call with your requirements.
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Heidelberg HRT III Retinal Tomograph
A Powerful Predictor of Change Validated by OHTS to predict structural change rogression analysis validated with 10 year's of patient data Optic disc analysis outperforms expert interpretation. The HRT provides retinal thickness measurements with absolute millimeter measurement. Unlike the Edema Index, the Retinal Thickness function locates both the vitreo-retinal interface and the retinal pigmented epithelium (RPE). Large, ethnic-selectable databases Asymmetry analysis Upgradeable platform Network ready. Software Modules will vary depending on instrument; please call with your requirements for a system that is right for your practice.
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STRATUS OCT(tm) Optical Coherence Tomography
The pre-owned used STRATUS OCT(tm) is a diagnostic imaging device that provides direct cross sectional images of the retina for objective measurement and subjective clinical evaluation in the detection of glaucoma and retinal diseases. The STRATUSOCT(tm) images and analyzes macular thickness, the retinal nerve fiber layer and the optic disc using the latest technology for high resolution scans The Stratus OCT incorporates optical coherence tomography technology to provide comprehensive imaging and measurement of glaucoma and retinal disease. Stratus OCT is the gold standard in vivo imaging device for the posterior segment and offers proven reproducibility for disease management. The Stratus OCT provides real-time cross-sectional images and quantitative analysis of retinal features to optimize the diagnosis and monitoring of retinal disease and for enhanced pre- and post-therapy assessment. The device is beneficial for evaluation of cataract patients, pre- and post-operatively, and for the assessment of early signs of glaucoma and glaucomatous change.
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Cirrus OCT(tm) Optical Coherence Tomography
The pre-owned used Cirrus spectral domain OCT(tm) ZEISS optics provide superior visualization for retinal cases. Cirrus high definition OCT scans the retina providing precise detail of retinal tissue and pathology. LSLO live video allows for specific targeting of pathology or anatomy in a beautiful high quality fundus image. Quantitative and qualitative analyses 3D retinal layer segmentation maps provide excellent view of pathology for therapeutic planning and monitoring. Detailed thickness maps assist in monitoring disease progression or regression while high definition, high resolution scans reveal anatomical detail for better understanding of disease pathogenisis. Small footprint and integrated design with so the clinician can easily view patient during set up and scanning.
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Pre-owned used Zeiss GDx
The pre-owned used Zeiss GDx is clinically proven to accurately discriminate between healthy and glaucomatous eyes and to be predictive of visual field loss. The GDx Tracks change over time using The Advanced Serial Analysis feature helps you to evaluate subtle RNFL changes so you can manage glaucoma with more confidence. GDx examinations are easy for your patients and staff. Reports are clear and intuitive. Portablity allows you to move your GDx between offices . Fast exam time ranges from 1 to 3 minutes.
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A Scan Zeiss IOL Master (pre-owned used)
The pre owned used Zeiss IOLMaster (pre-owned used) is a non-contact optical device that measures the distance from the corneal vertex to the retinal pigment epithelium by partial coherence interferometry, the IOL Master is consistently accurate to within ±0.02 mm or better. The IOLMaster is Carl Zeiss Meditec's innovative solution for biometric measurement and preoperative computation of intraocular lens (IOL) power. Non-contact Optical Coherence Biometry revolutionizes measurement of the ocular axis and sets new standards for speed and accuracy.
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Paradigm P-20 A Scan
The P-20 is a pre-owned used A scan with SRKII, SRKII A-Constant, SRK T, Hoffer Q, Holladay, Binkhorst (INSITU), Binkhorst, Collenbrander Hoffer programs
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J Ocul Pharmacol Ther. 2009 Dec;25(6):563-5. In vivo and in vitro investigations of fungal keratitis caused by Colletotrichum gloeosporioides. Mitani A, Shiraishi A, Uno T, Miyamoto H, Hara Y, Yamaguchi M, Ohashi Y. Department of Ophthalmology, Ehime University School of Medicine, Shitsukawa, Toon-City, Ehime, Japan. PURPOSE: To report a case of fungal keratitis caused by Colletotrichum gloeosporioides, which is a rare pathogen in humans. METHODS: An 80-year-old woman developed fungal keratitis after having sustained a traumatic injury during field work. The patient was initially examined by slit-lamp biomicroscopy and the Heidelberg Retina Tomograph II-Rostock Cornea Module (HRT II-RCM). Corneal scrapings were collected and submitted for laboratory investigations. RESULTS: Many septate, hyphae-like interlocking and branching white lines were observed in the area of the infiltrate by HRT II-RCM. A tentative diagnosis of fungal keratitis was made, and the patient was treated with systemic and topical voriconazole and pimaricin ophthalmic ointment. The infectious focus resolved within 2 weeks, and there were no signs of a recurrence after 3 months of treatment with the antifungal agents. The culture of the corneal scraping grew C. gloeosporioides. CONCLUSIONS: HRT II-RCM was useful in detecting filamentous fungi in the cornea. The treatment with voriconazole and pimaricin was effective in the treatment of C. gloeosporioides keratitis. PMID: 20028265 [PubMed - in process]
Diagnostic Ability of Heidelberg Retina Tomography in Detecting Glaucoma in a Population Setting The Singapore Malay Eye Study. Zheng Y, Wong TY, Lamoureux E, Mitchell P, Loon SC, Saw SM, Aung T. Singapore Eye Research Institute and Singapore National Eye Center, Singapore; State Key Laboratory of Ophthalmology, Zhongshan Ophthalmic Center, Sun Yat-sen University, Guangzhou, China. OBJECTIVE: To evaluate the performance of the Heidelberg Retina Tomograph II (HRT II, Heidelberg Engineering, Heidelberg, Germany) in diagnosing glaucoma in a population setting. DESIGN: Population-based cross-sectional study. PARTICIPANTS: Of 3280 Malay persons aged 40 to 80 years who participated in the survey, 112 subjects (124 eyes) with glaucoma and a subset of 196 bilaterally normal subjects (392 eyes) were included for the evaluation of diagnostic ability of HRT II. METHODS: All glaucomatous and normal eyes underwent standardized ophthalmic assessment (including automated perimetry) and HRT II. Glaucoma was defined according to International Society for Geographical and Epidemiological Ophthalmology criteria. Area under the curve (AUC) receiver operating characteristic (ROC), sensitivity, and specificity were used to evaluate the diagnostic performance of HRT II algorithms. Marginal logistic regression models were used to evaluate the influence of optic disc size on the results of HRT II algorithms. MAIN OUTCOME MEASURES: The HRT II algorithms: linear discriminant functions (LDFs) by Mikelberg et al (LDF1), Burk et al (LDF2), Bathija et al (LDF3), and Moorfields regression analysis (MRA). The MRA was subdivided into MRA1 with "borderline" outcomes as positive and MRA2 with "borderline" outcomes as negative. RESULTS: Subjects with cataract, visual impairment, astigmatism, and greater negative spherical equivalent, and of older age were more likely to yield lower quality images. For analyses by eye, AUCs were 0.789, 0.704, 0.755, 0.754, and 0.762 for MRA1, MRA2, LDF1, LDF2, and LDF3, respectively. At 85% specificity, sensitivities were 62.1%, 65.3%, and 66.9% for LDF1, LDF2, and LDF3, respectively. At 95% specificity, these figures decreased to 31.5%, 42.7%, and 45.2%, respectively. The sensitivity and specificity were 71.0% and 86.7% for MRA1 and 43.6% and 97.2% for MRA2, respectively. Similar estimates were found for analyses by person. Larger optic disc size was associated with increased sensitivity and false-positive rate for MRA1, LDF1, and LDF2. LDF1 and LDF3 were least affected by optic disc area, but the sensitivities were moderate and the false-positive rates were high across different optic disc areas. CONCLUSIONS: The current HRT II algorithms are of limited value for population-based glaucoma screening in the Malay population and do not account adequately for optic disc size. FINANCIAL DISCLOSURE(S): The authors have no proprietary or commercial interest in any materials discussed in this article. PMID: 20006907 [PubMed - as supplied by publisher]
Comparison of the Diagnostic Capability of the Heidelberg Retina Tomographs 2 and 3 for Glaucoma in the Indian Population. Rao HL, Babu GJ, Sekhar GC. L V Prasad Eye Institute, Banjara Hills, Hyderabad. PURPOSE: To compare the diagnostic capability of the Heidelberg Retina Tomograph (HRT) 2 and 3 (Heidelberg Engineering, GmBH, Dossenheim, Germany) for glaucoma in an Indian population. DESIGN: Evaluation of a diagnostic technology. PARTICIPANTS: Ninety-eight glaucoma subjects and 79 normal controls. METHODS: All participants underwent imaging with HRT2. Heidelberg Retina Tomograph 2 examinations were exported to HRT3 software. The stereometric parameters of HRT2 and HRT3 were compared. The diagnostic capability of Moorfields Regression Analysis (MRA) in the HRT2, HRT3 with and without ethnicity correction, and Glaucoma Probability Score (GPS) of HRT3 were compared. Analysis was done with the borderline results of MRA and GPS considered as normal to derive the most specific criteria and as abnormal to derive the least specific criteria. MAIN OUTCOME MEASURES: Sensitivity, specificity, and area under the receiver operating characteristic curve (AUC). RESULTS: On standard automated perimetry (SAP), the mean deviation (mean+/-standard deviation) of the glaucoma and normal groups were -7.3+/-6.7 dB and -0.4+/-1.1 dB, respectively (P<0.001). The AUC for the individual stereometric parameters of HRT2 were similar to that of HRT3. The sensitivity and specificity (most specific criteria) were 56.1% and 96.2%, respectively, for MRA of HRT2 and 56.1% and 91.1%, respectively, for MRA of HRT3. The sensitivity and specificity (least specific criteria) were 88.8% and 88.6%, respectively, for MRA of HRT2 and 70.4% and 81%, respectively, for MRA of HRT3. By using the Indian specific normative database of HRT3, the sensitivity and specificity were 37.8% and 97.5%, respectively, for the most specific criteria, and 55.1% and 89.9%, respectively, for the least specific criteria. Sensitivity and specificity of GPS were 86.7% and 68.3%, respectively, for the most specific criteria, and 93.9% and 39.2%, respectively, for the least specific criteria. CONCLUSIONS: In this cohort, the diagnostic capability of HRT2 MRA was similar to that of HRT3 MRA; ethnicity correction did not improve results; GPS was more sensitive but less specific than MRA in diagnosing glaucoma. FINANCIAL DISCLOSURE(S): The authors have no proprietary or commercial interest in any materials discussed in this article. PMID: 19969365 [PubMed - as supplied by publisher]
A novel technique using spectral-domain optical coherence tomography (Spectralis, SD-OCT+HRA) to image supine non-anaesthetized infants: utility demonstrated in aggressive posterior retinopathy of prematurity. Vinekar A, Sivakumar M, Shetty R, Mahendradas P, Krishnan N, Mallipatna A, Shetty KB. Department of Pediatric Retina, Narayana Nethralaya Postgraduate Institute of Ophthalmology, Bangalore, India. Purpose:To acquire high definition spectral domain optical coherence tomography (SD-OCT) images of supine, non-anesthetized infants in the office by a novel modification of a commercially available table-top, chin rest system.Method:Spectralis, a combined HRA+OCT device (Heidelberg Engineering, Heidelberg, Germany) was modified to convert the table-top system into a hand-held device using a two-step modification of the existing system. This device was used to obtain high-resolution OCT images of four infants with aggressive posterior retinopathy of prematurity (APROP) who required no general anesthesia.Results:Serial imaging at two time periods of the exact area of clinical interest were obtained and were comparable. The entire procedure was safely completed in the office. The obtained OCT images guided selective laser ablation of flat neovascularization which were missed on clinical examination.Conclusion:With this simple modification and technique, the ability of using the Spectralis, a popular combined angiography and OCT imaging device for imaging supine, non-anesthetized infants has been established. This possibility would allow the dual use of the table-top system to serve also as a hand-held device for paediatric cases that can be imaged in the office setting with limited operating room facility in a busy practice.Eye advance online publication, 8 January 2010; doi:10.1038/eye.2009.313. PMID: 20057510 [PubMed - as supplied by publisher]
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