Patent ID: 11925413
Assignee: ARASH GHAREH BAGHI
Field: Medical technology (Instruments)
Classification: CPC A | IPC A

Claim 11:
12. Method of determining ophthalmic parameters in a subject, comprising
providing (100) a probe body having a first (2a) and an opposing second end (2b),
arranging (101) the probe body (2) such that an end (2a) of the probe body (2) is at a distance from a corneal outer surface (b) of an eye of the subject,
moving (102) the probe body (2) in a first direction towards a central area of the corneal outer surface (b) such that the end (2a) of the probe body impacts the corneal outer surface (b) and until it is completely stopped on the eye (c),
registering (103) speed and time of the probe body (2) during a bound path of the probe body (2) when the probe body (2) is moved in the first direction, during impact with the corneal outer surface (b) and until the probe body (2) is completely stopped on the eye (c), and during a rebound path of the probe body (2) when the probe body (2) moves from a complete stop on the eye (c) in a second direction, opposite to the first direction, until the probe body (2) leaves the eye (d),
based on a curve obtained from the registered velocity and time of the probe, calculate (104) an intraocular pressure (ρ) of the eye as a slope between a time when the end (2a) of the probe body (2) first impacts the corneal outer surface (b) and the time when the probe body (2) is completely stopped on the eye (c), and to,
based on said time-velocity curve, calculate (105) a central cornea thickness (D) using a velocity of the probe body (2) at a moment of contact of the end of the probe body (2) with the corneal outer surface (b), Vr, and a velocity of the probe body (2) at the moment when the end (2a) of the probe body (2) leaves the corneal outer surface during rebound of the probe body (2) in the second direction, Vb.