Perimeter & Visual Field Instrument (Octopus) PREPARED BY: NUR AQILAH BINTI ABDUL RAZAK (2023239626) NURANIS SYAFIQAH BINTI SHARON (2023240186) NURIN ARDINI BINTI AZHAR (2023670744) NURIN NAJWA BINTI NOR ZAKI (2023277468) SITI FATIMAH BINTI SUHAIMI (2023214192) WAN MUHAMMAD IMAN FIRDAUS BIN WAN HASRI (2023699368)
True fixation control and automated eye tracking, suitable for detailed examinations 2. Can perform a full threshold test within 2-3 minutes. Features HIGH RESOLUTION AND FAST PERIPHERAL TESTING FLEXIBLE INTERFACES A method that combines the precision of manual testing with the efficiency of automated systems. Enables the testing of any point in the visual field, including areas that are hard to reach with manual methods. Making it easy to integrate with other systems and software 2. SEMI-AUTOMATED KINETIC PERIMETRY
Provide results, combining structure and function for effective diagnosis and treatment planning 2. Features SPECIAL SOFTWARE FOR GLAUCOMA CARE WIDE RANGE OF APPLICATIONS PROVIDING MEANINGFUL RESULTS For a variety of ophthalmic complaints, including glaucoma detection, inflammatory diseases affecting the optic nerve, changes in visual acuity, detection of circulatory disorders. Software for detecting and measuring both local and general changes, distinguishing between decreases in sensitivity from cataracts and deterioration from glaucoma.
Provide quantitative data on the extent and severity of visual field loss. Aids in tracking disease progression and evaluating treatment effectiveness over time. OBJECTIVE MEASUREMENT Benefits Able to detect visual field defects. Early detection allows for timely intervention and management. DETECTION OF VISUAL FIELD DEFECTS QUANTITATIVE ASSESSMENT Perimetry offers an objective measurement of visual function. This is particularly valuable for monitoring changes in vision over time. Printout of a single analysis of Octopus
Visual field testing results can help patients understand the nature and severity of their condition. Seeing visual field maps and understanding areas of vision loss can motivate patients to adhere to treatment plans. Benefits Offer customizable testing protocols. This flexibility enables thorough evaluation of different aspects of visual function CUSTOMIZABLE TESTING PATIENT EDUCATION CLINICAL DECISION MAKING The information obtained from visual field testing guides clinical decisionmaking processes.
BIRTH product of service Step 1 2022 Step 2 Step 3 2024 2026
Limitations Certain light stimuli with high contrast presented in the Octopus 600 can trigger episodes of photosensitive epilepsy or consciousness disturbances. PHOTOSENSITIVE EPILEPSY RISK Fixation losses due to low patient compliance can lead to unreliable VF results. Ensuring consistent and accurate fixation during testing is crucial for reliable data. PATIENT COMPLIANCE AND FIXATION LOSSES
Limitations The price for Haag-streit Octopus 900 can vary depending on the location of the purchase, but the price usually goes around $4999 U.S dollars. HIGH COST Variability in threshold measurements can make detecting true deterioration challenging when assessing VF progression. VARIABILITY IN THRESHOLD MEASUREMENTS
Applications in Optometry Practices
Visual acuity assessment Primarily used to measure visual acuity, which is the ability to see clearly at a distance. Crucial for diagnosing conditions like myopia (nearsightedness), hyperopia (farsightedness), and astigmatism. Optometrists can prescribe the correct eyeglasses or contact lenses to correct these conditions.
Visualfield analysis Used to assess the peripheral vision of both eyes. Important for diagnosing conditions like glaucoma, where damage to the optic nerve can lead to peripheral vision loss. By identifying areas of visual field loss, optometrists can monitor the progression of glaucoma and recommend appropriate treatment.
Diagnosing Vision Disorders Beyond visual acuity and visual field analysis, these instruments can also be used to diagnose other vision disorders. For example, they can help identify the presence of amblyopia (lazy eye) by detecting differences in visual acuity between the two eyes.
Monitoring Vision Changes Perimeter is used to monitor changes in patient’s vision over time This procedure is particularly vital for patients who are at risk for vision loss due to disease like glaucoma as well as other issues Where regular monitoring can help detect early signs of vision loss and intervene before significant damage occur Example of diseases: Glaucoma, multiple sclerosis, stroke and etc.
Research & Development Perimeter and visual fields are also used in research and development The objectives are to study deeper about the mechanism of effects of various conditions on vision This ongoing research can lead to new treatments and interventions for vision disorder To know more about one of the research that had been done:https://www.ncbi.nlm.nih.gov/pmc/articles/PMC4867952/
Educational Purposes Perimeter & visual fields are used in educational settings to teach students about vision and how it is assessed Providing hands-on experience with the tools used in optometry, will help the student to: understand the principle in the instrument be an expert in handling the instruments understand the importance of visual health
REFERENCES “Haag Streit Perimetry Octopus 300.” Ophthalmic Products, viewlightusa.com/shop/perimetry/haag-streit-perimetryoctopus-300/. Accessed 15 Apr. 2024. “Perimetry.” Uk.haag-Streit.com, uk.haag-streit.com/products/categories/speciality-diagnostics/perimetry/octopus900. Accessed 15 Apr. 2024. Haag Streit Perimetry octopus 900. Ophthalmic Products. (2020, September 15). https://viewlightusa.com/shop/perimetry/haag-streit-perimetry-octopus-900/ Haag Streit Perimetry octopus 600. Ophthalmic Products. (2022, October), https://us.haagstreit.com/2%20Products/Speciality%20diagnostics/Perimetry/Octopus%20600/Instructions%20for%20use/1500_722 0367_04110_IFU_OCTOPUS_600_01_en_web.pdf Turpin, A., Myers, J. S., & McKendrick, A. M. (2016). Development of Visual Field Screening Procedures: A Case Study of the Octopus Perimeter. Translational vision science & technology, 5(3), 3. https://doi.org/10.1167/tvst.5.3.3 Instruments, V. O. (n.d.). The Importance of Perimetry In Your Modern Ophthalmic Practice. https://www.veatchinstruments.com/blog/The-Importance-of-Perimetry-In-Your-Modern-Ophthalmic-Practice
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