Tissue Ablation

Description

Returns the estimated ablation (EAD), the residual stromal bed (RSB) and the percentage tissue altered (PTA).

Background
Preoperative assessment of the tissue ablation (tissue calculator) helps identifying patients at high risks, in particular for postoperative ectasia. According to most surgeons, a RSB of less than 300mcm and a PTA ≥0.4 should be avoided. The anterior 40% stroma contributes maximum strength to the cornea, which gets modified after laser refractive surgery. According to some surgeons, PTA is more sensitive than RSB and that ectasia had occurred in corneas with normal thickness, normal RSB and even normal topography. However, a high PTA does not mean that ectasia will occur.

URL

POST https://www.zubisoft.com/api/ablations

Permission

Standard authentication with public key, hashed private key and user key is required.

Parameters

Name Format Example Comment
laser Integer 3 Supported Laser (submit the ID of the laser):
  • ID=1 (Alcon WaveLight Allegretto)
  • ID=2 (Alcon WaveLight Eye-Q)
  • ID=3 (Alcon WaveLight EX500)
  • ID=6 (Johnson & Johnson VISX S4)
  • ID=10 (Schwind Amaris 500E)
  • ID=11 (Schwind Amaris 750S)
  • ID=12 (Schwind Amaris 1050RS)
manifest_sphere_pre Float -4.5
manifest_cylinder_pre Float -0.75 The preoperative manifest cylinder in D. Can be in plus or minus format
target_sphere Float 0
target_cylinder Float 0
laser_optical_zone Float 6.5 The optical zone of the ablation in mm, usually around 6.5mm
pachymetry_central_pre Integer 501 The central corneal thickness in mcm (some surgeons use thinnest corneal thickness)
flap_thickness Integer 120 The thickness of the corneal flap in mcm 

{
    "laser": 3,
    "manifest_sphere_pre": -4.5,
    "manifest_cylinder_pre": -0.75,
    "target_sphere": 0,
    "target_cylinder": 0,
    "laser_optical_zone": 6.5,
    "pachymetry_central_pre": 501,
    "flap_thickness": 120
}




curl --location --request POST 'https://www.zubisoft.com/api/ablations' \
--header 'Content-Type: application/json' \
--header 'X-Public-Key: yourPublicKey' \
--header 'X-User-Key: yourUserKey' \
--header 'X-Private-Key: hashOfYourPrivateKey' \
--data-raw '{
    "laser": 3,
    "manifest_sphere_pre": -4.5,
    "manifest_cylinder_pre": -0.75,
    "target_sphere": 0,
    "target_cylinder": 0,
    "laser_optical_zone": 6.5,
    "pachymetry_central_pre": 501,
    "flap_thickness": 120
}'

Response

The response includes the following values

Name Format Example Comment
ead Integer 75 The estimated ablation in mcm (µ)
rsb Integer 306 The residual stromal bed in mcm (µ)
pta Integer 39 The percentage tissue altered 

{
    "ead": 75,
    "rsb": 306,
    "pta": 39
}