Table 1 Specification of microneedles used for intrastromal injections
From: Systematic assessment of microneedle injection into the mouse cornea
Needle type | Material | Bevel (degree) | Nominal outer diameter (mm) | Nominal inner diameter (mm) | Total length (mm) |
|---|---|---|---|---|---|
Hamilton, 33 G, point style 4 | stainless steel | 30 | 0.210 | 0.110 | 9.520 |
WPI, 35 G, tri-surface bevel | stainless steel | 25 | 0.135 | 0.055 | 35.000 |
WPI, hand-pulled and beveled glass needle | glass | 25 | 0.060a | 0.050a | 10.000a |