Table 1 Spatial resolution of a selection of animal eyes
Name | Resolution/inter-receptor angle (Δϕ, °) |
|---|---|
Eagle | 0.0036 (Land and Nilsson 2002) |
Human | 0.007 (Land and Nilsson 2002) |
Octopus (cephalopod) | 0.011 (Land and Nilsson 2002) |
Cat | 0.05 (Land and Nilsson 2002) |
Strombus luhuanus (gastropod) | 0.23 (Land 1981) |
Honeybee | 0.95 (Land and Nilsson 2002) |
Planorbaruis corneus (gastropod) | 1.4 (Zieger and Meyer-Rochow 2008) |
Scallop (Pecten maximus, bivalve) | 1.6 (Land and Nilsson 2002) |
Lymnaea stagnalis (gastropod) | 2.5 (Zieger and Meyer-Rochow 2008) |
Littorina littorea (gastropod) | 4.5 (Land and Nilsson 2002) |
Fruit fly | 5.0 (Land and Nilsson 2002) |
Nautilus (cephalopod) | 8.0 (Land and Nilsson 2002) |
Cepaea nemorais (gastropod) | 8.0 (Zieger and Meyer-Rochow 2008) |
Trichia hispida (gastropod) | 13.0 (Zieger and Meyer-Rochow 2008) |
Helix aspersa (gastropod) | 14.5 (Hamilton and Winter 1982) |
Giant clam (Tridacna maxima, bivalve) | 20.0 (Land 2003) |
Ark clam (Barbatia cancellaria, bivalve) | 32.0 (Nilsson 1994)a |
Planaria (flatworm) | 35.0 (Land and Nilsson 2002) |