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To assess risk factors for an initial parafoveal scotoma (IPFS) compared with an initial nasal step (INS) in glaucoma.Retrospective, observational study.Sixty-nine patients with glaucoma with an isolated IPFS and 53 patients with an isolated INS.On the basis of 2 reliable, consistent 24-2 Swedish interactive threshold algorithm standard visual fields (VFs), 2 groups of patients with glaucoma were...
The simple approach of thermal oxide capped poly refill trench isolation (Rung et al., 1982) is studied with regard to the impact of cap oxide thickness, trench wall thermal oxide thickness, and trench depth on MOSFET and isolation characteristics. It is shown that an increase of cap oxide thickness (t/sub ox/) from 600 to 2000 AA eliminates subthreshold double-hump phenomena, improves isolation V/sub...
A reliable 0.3-μm n-channel gate-to-drain overlapped MOSFET was realized using poly spacers and demonstrated to have more than a 10-year lifetime at 3.5 V operation. This is more than two orders of magnitude longer than the conventional oxide-spacer lightly-doped-drain (LDD) devices. The large improvement is due to the unfavorable oxide field, when gate voltage (VG) is less than or equal to...
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