Eye measurement and modeling techniques
A refractive surgical system, comprising a refractive treatment apparatus adapted to alter multiple localized regions of a cornea and an ophthalmic measurement device adapted to measure a corneal shape parameter at at least two locations on the cornea. A corneal modeling apparatus and method to calculate anticipated corneal shape parameters at two or more locations based on parameters of a refractive treatment, and compare shape parameters measured at two or more locations on the cornea corresponding to the two or more locations of the anticipated corneal shape parameters.
1 . A refractive surgical system, comprising:
a refractive treatment apparatus adapted to alter multiple regions of a cornea; and
an ophthalmic measurement device adapted to measure corneal shape parameters at at least two locations on the cornea affected by the treatment apparatus.
2 . The system of claim 1 , wherein the measurement device comprises a Fourier domain OCT device.
3 . The system of claim 1 , wherein the treatment apparatus comprises a laser.
4 . The system of claim 3 , wherein the laser comprises one of an excimer laser and a femtosecond laser.
5 . The system of claim 3 , wherein the system is adapted to modify a fluence of the laser in response to the measured corneal shape parameters.
6 . The system of claim I, wherein the corneal shape parameters are thicknesses of the cornea.
7 . The system of claim 1 , wherein the corneal shape parameters are corneal positions.
8 . The system of claim 1 , wherein the at least two locations span at least 2 millimeters.
9 . The system of claim 1 , wherein the measurement device comprises a moveable time-domain OCT device.
10 . The system of claim 1 , further comprising a processor adapted to A) calculate anticipated corneal shape parameters at the two or more locations based on parameters of a refractive treatment, and B) compare the shape parameters measured at the two or more locations to the anticipated corneal shape parameters.
11 . The apparatus of claim 10 , wherein the system is adapted to modify a fluence of the laser in response to a difference between the measured shape parameters measured and the anticipated corneal shape parameters.
12 . The apparatus of claim 11 , wherein the system is adapted to notify an operator of the system if a difference between the measured shape parameters measured and the anticipated corneal shape parameters is too great.
13 . A corneal modeling apparatus comprising a processor adapted to A) calculate anticipated corneal shape parameters at two or more locations based on parameters of a refractive treatment, and B) compare shape parameters measured at two or more locations on a cornea to the anticipated corneal shape parameters, the two or more locations on the cornea corresponding to the two or more locations of the anticipated corneal shape parameters.
14 . The apparatus of claim 13 , further comprising a refractive treatment apparatus adapted to perform the refractive treatment on the cornea.
15 . The apparatus of claim 14 , further comprising an ophthalmic measurement device adapted to obtain the two or more measured shape parameters.
16 . The apparatus of claim 15 , wherein the measurement device comprises a Fourier domain OCT device.
17 . The apparatus of claim 14 , wherein the treatment apparatus comprises a laser.
18 . The apparatus of claim 17 , wherein the laser comprises an excimer laser and a femtosecond laser.
19 . The apparatus of claim 17 , wherein the system is adapted to modify a fluence of the laser in response to a difference between the measured shape parameters measured and the anticipated corneal shape parameters.
20 . The apparatus of claim 19 , wherein the system is adapted to notify an operator of the system if a difference between the measured shape parameters measured and the anticipated corneal shape parameters is too great.
21 . The apparatus of claim 13 , wherein the corneal shape parameters are thicknesses of the cornea.
22 . The apparatus of claim 13 , wherein the corneal shape parameters are corneal positions.
23 . The apparatus of claim 13 , wherein the at least two locations span at least 2 millimeters.
24 . A corneal modeling method comprising:
calculating anticipated corneal shape parameters at two or more locations based on parameters of a refractive treatment; and
comparing shape parameters measured at two or more locations on a cornea to the anticipated corneal shape parameters, the two or more locations on the cornea corresponding to the two or more locations of the anticipated corneal shape parameters.
25 . The method of claim 24 , further comprising a refractive treatment apparatus adapted to perform the refractive treatment on the cornea.
26 . The method of claim 25 , further comprising an ophthalmic measurement device adapted to obtain the two or more measured shape parameters.
27 . The method of claim 26 , wherein the measurement device comprises a Fourier domain OCT device.
28 . The method of claim 25 , wherein the treatment apparatus comprises a laser.
29 . The method of claim 28 , wherein the laser comprises an excimer laser and a femtosecond laser.
30 . The method of claim 28 , wherein the system is adapted to modify a fluence of the laser in response to a difference between the measured shape parameters measured and the anticipated corneal shape parameters.
31 . The method of claim 30 , wherein the system is adapted to notify an operator of the system if a difference between the measured shape parameters measured and the anticipated corneal shape parameters is too great.
32 . The method of claim 24 , wherein the corneal shape parameters are thicknesses of the cornea.
33 . The method of claim 24 , wherein the corneal shape parameters are corneal positions.
34 . The method of claim 24 , wherein the at least two locations span at least 2 millimeters.
35 . One or more processor readable storage devices having processor readable code embodied on said processor storage devices, said processor readable code for programming one or more processors to execute a method for providing a corneal modeling, comprising:
calculating anticipated corneal shape parameters at two or more locations based on parameters of a refractive treatment; and
comparing shape parameters measured at two or more locations on a cornea to the anticipated corneal shape parameters, the two or more locations on the cornea corresponding to the two or more locations of the anticipated corneal shape parameters.
36 . The processor readable storage device of claim 35 , further comprising a refractive treatment apparatus adapted to perform the refractive treatment on the cornea.
37 . The processor readable storage device of claim 36 , further comprising an ophthalmic measurement device adapted to obtain the two or more measured shape parameters.
38 . The processor readable storage device of claim 37 , wherein the measurement device comprises a Fourier domain OCT device.
39 . The processor readable storage device of claim 36 , wherein the treatment apparatus comprises a laser.
40 . The processor readable storage device of claim 39 , wherein the laser comprises an excimer laser and a femtosecond laser.
41 . The processor readable storage device of claim 39 , wherein the system is adapted to modify a fluence of the laser in response to a difference between the measured shape parameters measured and the anticipated corneal shape parameters.
42 . The processor readable storage device of claim 40 , wherein the system is adapted to notify an operator of the system if a difference between the measured shape parameters measured and the anticipated corneal shape parameters is too great.
43 . The processor readable storage device of claim 35 , wherein the corneal shape parameters are thicknesses of the cornea.
44 . The processor readable storage device of claim 35 , wherein the corneal shape parameters are corneal positions.
45 . The processor readable storage device of claim 35 , wherein the at least two locations span at least 2 millimeters.