Castrop (Hoffman) Femto-LRI Nomogram

Limbal relaxing incisions · suggested arc length · arc Ø 8.5 mm · 80 % depth
Effect [D] = −2.4699 + 0.0610 · arc[°] + 0.0155 · age

Attention. General information only — validate against your own outcomes and device settings (B&L Victus FEMTO). Tabulated range: age 40–90, 0.5–2.5 D; recommended arc 30–60°.

Inputs

yr
D
°
Fixed nomogram settings: arc diameter 8.5 mm · depth of cut 80 % · paired symmetric incisions centred on the steep meridian.

Suggested incisions

Arc length per incision
– °
Incisions
2
Precise
– °
Placement
–
Target effect
– D

Cornea

Nomogram table · active cell highlighted

↔ Swipe to scroll. Arc length in degrees; blank cells fall outside 30–60°. Source: Castrop / P. Hoffman, augenklinik-castrop-rauxel.de. Ziemer provides this for general information only.

Femto LRI · Castrop (Hoffman) nomogram · arc Ø 8.5 mm · 80 % depth Refractive Planning Suite · Dr. med. Harald C. Gäckle