{"uid":"cap_EZD5giXk7UYnGt5NoSEUA","slug":"ohts-egps-2007-table-6-glaucoma-risk-calculator-7eea9a1a","name":"OHTS-EGPS 2007 Table 6 Glaucoma Risk Calculator","description":"OHTS-EGPS 2007 Table 6: 5-year primary open-angle glaucoma risk in untreated ocular hypertension from age, mean IOP (mm Hg), mean central corneal thickness (microns), mean vertical cup-disc ratio, and mean Humphrey pattern standard deviation (dB). Point bands map to 4%, 10%, 15%, 20%, or 33%. No race (dropped in the multivariate model). No diabetes term. Not a glaucoma diagnosis or drop order. magent does not measure IOP or pachymetry.","url":"https://api.magentlab.com/api/calc/ohts","method":"GET","headers":{},"bodySchema":{"type":"object","$schema":"https://json-schema.org/draft/2020-12/schema","required":["input"],"properties":{"input":{"type":"object","required":["type","method"],"properties":{"type":{"type":"string","const":"http"},"method":{"enum":["GET","HEAD","DELETE"],"type":"string"},"headers":{"type":"object","additionalProperties":{"type":"string"}},"queryParams":{"type":"object","required":["age","iop_mm_hg","cct_microns","vertical_cd_ratio","psd_db"],"properties":{"age":{"type":"integer","description":"Age in years (integer 30-80). OHTS enrolled 40-80; EGPS enrolled age >30. magent accepts 30-80 only. Table 6: <45=0, 45 to <55=1, 55 to <65=2, 65 to <75=3, >=75=4."},"psd_db":{"type":"number","description":"Mean Humphrey pattern standard deviation in dB (0.5-8), average of the two eyes. Table 6: <1.8=0, 1.8 to <2.0=1, 2 to <2.4=2, 2.4 to <2.8=3, >=2.8=4. magent does not run perimetry."},"iop_mm_hg":{"type":"number","description":"Mean untreated intraocular pressure in mm Hg (20-32), average of the two eyes after multiple Goldmann readings as in the paper. Table 6: <22=0, 22 to <24=1, 24 to <26=2, 26 to <28=3, >=28=4. magent does not measure IOP."},"cct_microns":{"type":"number","description":"Mean central corneal thickness in microns (475-650), average of the two eyes. Table 6: >=600=0, 576 to <600=1, 551 to <576=2, 526 to <551=3, <=525=4. magent does not perform pachymetry."},"vertical_cd_ratio":{"type":"number","description":"Mean vertical cup-disc ratio by contour (0-1), average of the two eyes. Table 6: <0.3=0, 0.3 to <0.4=1, 0.4 to <0.5=2, 0.5 to <0.6=3, >=0.6=4. magent does not grade the disc."}}}},"additionalProperties":false},"output":{"type":"object","required":["type"],"properties":{"type":{"type":"string"},"example":{"type":"object"}}}}},"responseSchema":null,"example":null,"exampleRequest":null,"tags":["x402"],"displayCostAmount":"0.005","displayCostAsset":"USDC","priceDynamic":false,"priceHint":null,"priceStatus":"priced","priceSource":"probe","requiresHandshake":false,"reviewCount":0,"rating":{"score":"0.00","successRate":"0.00","reviews":0,"stars":null,"state":"unrated"},"availabilityStatus":"unknown","priceObserved":null,"sessionDeposit":null,"pricing":{"kind":"static","summary":"$0.005/call","primary":{"kind":"static","protocol":"x402","network":"base","amountUsd":"0.005","per":"call","confidence":"exact"},"accepted":[{"kind":"static","protocol":"x402","network":"base","amountUsd":"0.005","per":"call","confidence":"exact"}]},"paymentMethods":[{"uid":"pm_L0LQoHge0EYrUfE9N8GN-","protocol":"x402","methodType":"crypto","chain":"base","mode":"charge","costAmount":"0.005","costPer":"request","priority":0,"asset":"0x833589fCD6eDb6E08f4c7C32D4f71b54bdA02913","unit":"request","depositMicros":null,"planRef":null}],"brandName":null,"brandSlug":null,"brandBaseUrl":null,"brandDocsUrl":null,"whatItDoes":"Calculates 5-year primary open-angle glaucoma risk in untreated ocular hypertension using the OHTS-EGPS 2007 Table 6 point-based model","exampleAgentPrompt":"Using the OHTS-EGPS 2007 Table 6 model, what is my patient's 5-year risk of developing glaucoma? They are 58 years old, have a mean IOP of 25.5 mm Hg, mean central corneal thickness of 545 microns, mean vertical cup-disc ratio of 0.52, and a mean Humphrey pattern standard deviation of 2.2 dB.","exampleUseCases":[{"title":"Pre-treatment glaucoma risk counseling","prompt":"My patient has ocular hypertension and we're deciding whether to start drops. They're 63 years old, mean IOP 27 mm Hg, CCT 538 microns, vertical cup-disc ratio 0.55, and Humphrey PSD 2.6 dB. Can you run the OHTS-EGPS Table 6 calculation and tell me their 5-year risk band?"},{"title":"Monitoring borderline ocular hypertension","prompt":"I have a 47-year-old with borderline ocular hypertension — mean IOP 22.5, CCT 590 microns, cup-disc ratio 0.35, and PSD 1.7 dB. Use the OHTS-EGPS 2007 model to give me their 5-year POAG risk so I can decide on observation vs treatment."},{"title":"High-risk glaucoma suspect documentation","prompt":"Document the OHTS-EGPS glaucoma risk score for a 72-year-old patient: IOP 29 mm Hg, CCT 510 microns, cup-disc ratio 0.65, PSD 3.1 dB. I need the point total and the 5-year risk percentage band for the chart."}],"resultDescription":"Returns a point total derived from the five OHTS-EGPS Table 6 inputs and maps it to one of five 5-year POAG risk bands: 4%, 10%, 15%, 20%, or 33%. Does not produce a diagnosis, prescribe treatment, or measure any clinical values itself.","failureModes":["Age outside 30–80 range returns validation error","IOP outside 20–32 mm Hg range rejected","CCT outside 475–650 microns range rejected","PSD outside 0.5–8 dB range rejected","Cup-disc ratio outside 0–1 rejected","Missing any required query parameter returns 400-level error","Payment not included or insufficient USDC balance blocks call"],"whenToPreferThis":"Use this endpoint when you need a validated, published clinical risk score specifically from the OHTS-EGPS 2007 Table 6 model for untreated ocular hypertension patients. Prefer this over general risk tools when the clinical question is 5-year POAG conversion probability without race as a covariate and without a diabetes term, matching the original multivariate model. Not appropriate for patients already on IOP-lowering treatment, for diagnosing glaucoma, or for measuring clinical parameters — inputs must come from clinical records.","instructions":null,"reviewSummary":null,"reviewSummaryHighlights":null,"reviewSummaryConcerns":null,"reviewSummaryGeneratedAt":null,"activationCount":0,"lastUsedAt":null,"lastSuccessfullyRanAt":null,"lastHealthCheckAt":"2026-09-14T13:02:35.042Z","isFirstParty":false}