视野检查（静态阈值）
眼科项目
≈ ¥20-50
(≈ $3-7)
大约15-30分钟
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项目介绍
视野检查（静态阈值）在一般公立医院参考费用约¥15-40，三甲医院参考费用约¥20-50，常用于相关诊断评估与就医安排，费用随医院及地区有所差异。
主要用途
Primary use is objective, quantitative assessment of retinal ganglion cell function for early detection and longitudinal monitoring of glaucoma; also used to diagnose and characterize neuro-ophthalmic disorders (e.g., optic nerve, chiasmal, or retrochiasmal lesions), evaluate visual field defects in stroke, multiple sclerosis, brain tumors, and inherited retinal diseases; assess functional impact of diabetic retinopathy or macular degeneration; and support disability evaluations or driver’s license eligibility assessments.
正常值范围
Static threshold perimetry (e.g., Humphrey Visual Field Analyzer) reports results as sensitivity thresholds (in decibels, dB) at each test point. Normal age-corrected total deviation (TD) and pattern deviation (PD) values typically fall within ±2 dB across the central 30° visual field; mean deviation (MD) should be ≥ −2.0 dB (often −0.5 to +1.0 dB in healthy adults aged 20–60); pattern standard deviation (PSD) should be ≤ 2.0 dB; glaucoma hemifield test (GHT) must be 'within normal limits'. Fixation losses <20%, false-positive errors <15%, and false-negative errors <15% indicate reliable testing.
偏低可能原因
Glaucomatous optic neuropathy, retinitis pigmentosa, ischemic optic neuropathy (e.g., NAION), advanced diabetic retinopathy with macular edema or optic atrophy, chiasmal compression (e.g., pituitary adenoma causing bitemporal hemianopia), optic neuritis, stroke affecting visual pathways (e.g., occipital lobe infarction), hereditary optic neuropathies (e.g., Leber’s hereditary optic neuropathy).
偏高可能原因
High values are not clinically meaningful in static threshold perimetry — sensitivity thresholds (dB) represent detection ability, so higher dB = better function; thus, 'high' values reflect normal or supranormal sensitivity and are not pathologic. Artifactual 'high' readings may arise from patient inattention (leading to false negatives misinterpreted as high thresholds), improper calibration, lens-induced blur, or excessive pupil constriction during testing. True pathological elevation does not occur; instead, abnormally elevated MD/PSD values beyond age norms suggest test unreliability or technical error.