- 期刊
- OpenAccess
眩光不能及對比敏感度測試在白內障病人之應用
Contrast Sensitivity and Glare Disability Test in Cataracts Patients
摘要
將白內障病人區分為皮質(Ⅰ)、核心(Ⅱ)、後囊混濁(Ⅲ)等三型。以TVA測試其對比敏感度及眩光不能，並與對照組比較。顯示出三亞群其對比敏感度均低於對照組，且3、10、15等空間頻率有意義差別，眩光不能測試結果亦相仿彿。而(Ⅲ)亞群之低頻率明顯低於(Ⅰ)、(Ⅱ)亞群。
關鍵字
無資料並列摘要
Glare complaints are common for patients with good visual acuity. Spot glare sensitivity is a sensitive measurement of intraocular scattering caused by cataracts. The TVA functional visual tester was used to measure contrast sensitivity with and without spot glare in 30 patients with cataracts. Only the cataracts of one of the main three morphological cataract types were used-cortical opacity(1), nuclear sclerosis (2) and posterior subcapsular opacity(3). Measurement of contrast sensitivity were lower in experimental group at all spatial frequencies than those of control group, and the spatial frequency of 3, 10 15 were all significant. Glare disability in experimental group were also lower than control group; only spatial frequency of 3, 10, 15 were significant. For posterior subcapsular cataracts, the loss of lower spatial frequency in contrast sensitivity and glare disability were significantly different from subgroup (2) and (3). For nuclear and cortical cataracts, the decline of contrast sensitivity and glare disability were at intermediate and high spatial frequency. It was concluded that contrast sensitivity and glare disability measurements are a useful part of the assessment of visual function in patients with posterior subcapsular cataract.