Table 1 The values of measured parameters for 5 patients (all units, unless otherwise stated, are in dioptres)
From: Corneal power evaluation after myopic corneal refractive surgery using artificial neural networks
Feature | Patient 1 | Patient 2 | Patient 3 | Patient 4 | Patient 5 |
|---|---|---|---|---|---|
Male/female—w(1) | F | M | F | M | M |
Age—w(2) | 48 | 46 | 28 | 30 | 28 |
Eye left/right—w(3) | L | R | R | L | R |
Cornea front | |||||
 90° | 45.7 | 41.5 | 42.7 | 45.1 | 46.1 |
 180° | 48.4 | 41.5 | 43.1 | 46.8 | 47.3 |
 w(4)—mean | 47 | 41.5 | 42.9 | 45.9 | 46.7 |
Cornea back | |||||
 90° | −6.4 | −5.8 | −5.9 | −6.3 | −6.5 |
 180° | −7 | −6.2 | −6.1 | −6.9 | −7.1 |
 w(5)—mean | −6.7 | −6 | −6 | −6.6 | −6.8 |
Tangential anterior | |||||
 45° | 46.8 | 41 | 43.2 | 45.1 | 45.9 |
 90° | 46.4 | 41 | 43.3 | 45.2 | 45.7 |
 135° | 48.3 | 41.9 | 43.3 | 47.2 | 46.9 |
 180° | 46.5 | 43.1 | 44.1 | 45.9 | 45.1 |
 w(6)—mean | 47 | 41.75 | 43.47 | 45.85 | 45.9 |
Tangential posterior | |||||
 45° | −7.4 | −6.2 | −6.2 | −6.6 | −7 |
 90° | −7.3 | −6.2 | −6.1 | −6.9 | −7.1 |
 135° | −7.4 | −6.3 | −6.2 | −7.3 | −7.4 |
 180° | −6.9 | −6.5 | −6.4 | −6.7 | −6.8 |
 w(7)—mean | −7.25 | −6.3 | −6.22 | −6.87 | −3.5 |
Net power of the cornea | |||||
 45° | 44.7 | 40.3 | 41.7 | 44 | 45 |
 90° | 44.3 | 40.5 | 42.6 | 43.8 | 44.4 |
 135° | 47 | 39.7 | 41.2 | 45.2 | 46 |
 180° | 46.6 | 40.6 | 42.2 | 45.4 | 45.7 |
 w(8)—mean | 45.65 | 40.28 | 41.93 | 44.6 | 45.28 |
Total corneal refractive power | |||||
 45° | 46 | 40.7 | 42.9 | 45.3 | 46.6 |
 90° | 45.7 | 41.9 | 43.5 | 45.3 | 46.4 |
 135° | 49.2 | 41.1 | 42.5 | 47.1 | 48.2 |
 180° | 48.6 | 41.8 | 43.4 | 47.2 | 47.7 |
 w(9) | 47 | 41 | 43 | 46 | 47 |
Equiv K-reading power | |||||
 90° | 45.8 | 41.7 | 43.2 | 45.2 | 46 |
 180° | 48 | 42.1 | 43.8 | 46.4 | 46.7 |
 w(10)—mean | 46.9 | 41.9 | 43.5 | 45.8 | 46.4 |
Corrected corneal power (ground truth) w(11) | 38 | 37 | 37.65 | 41.275 | 39.7 |