Reversal of a presbyopic LASIK treatment

Figures & data

Figure 1 Corneal topographies.

Abbreviations: A–B, difference map showing change from topography A to B; B–D, difference map showing change from topography B to D; N, nasal; OS, oculus sinister (left eye); T, temporal.

Notes: (A) Pre-Supracor shows with-the-rule astigmatism. (B) 1 year post-Supracor shows the steep Supracor bump to be slightly off-center. (C) Difference map pre-Supracor versus 1 year post-Supracor shows the magnitude and area of steepening caused by supracor and change in topography from (A) to (B). (D) 6 months post-reversal shows some flattening of the Supracor bump with recentration and decrease in the corneal steepness. (E) Difference map pre-Supracor reversal versus 6 months post-reversal shows where the flattening occurred specifically in the decentered steep area and change in topography from (B) to (D).

Table 1 Aberrometry data

Aberrations	HO	Vertical trefoil	Vertical coma	Horizontal coma	Horizontal trefoil	Quadrafoil	Sph aber
Pre-Supracor screening	0.73	0.12	−0.22	−0.41	−0.12	0.01	+0.52
1 yr post-Supracor	0.51	−0.19	−0.25	−0.26	−0.17	0.03	−0.03
6 m post-reversal	0.44	−0.25	0.12	−0.19	0.02	0.004	−0.02
1 yr post-reversal	0.34	−0.21	0.01	−0.09	0.02	0.01	+0.05

Abbreviations: HO, higher order aberrations; Sph Aber, spherical aberration; yr, year; m, months.

Table 2 Pre- and post-treatment refraction and acuities

	MR	UDVA	UIVA	UNVA	BDVA	DCNVA
Pre-Supracor screening	+0.75 −0.50×140	20/40	20/50	J10	20/20	–
Laser input	+0.70 −0.50×140
1 day post-Supracor	−1.50 −1.25×40	20/80	20/50	J2	20/25	J3
1 yr post-Supracor	−1.25 −1.50×55	20/100	20/50	J1	20/30	J3
Laser input	−0.75 −1.42×38
1 day post-reversal	+0.00 −0.50×50	20/25	20/40	J10	20/25	J8
6 m post-reversal	+0.50 −0.50×65	20/25	20/30	J5	20/20	J5
1 yr post-reversal	+0.00 −1.00×40	20/20	20/40	J8	20/20	J6

Abbreviations: Mr, manifest refraction; BDVA, best distance visual acquity; UDVA, uncorrected distance visual acquity; UIVA, uncorrected intermediate visual acuity; UNVA, uncorrected near visual acuity; DCNVA, distance corrected near visual acuity; yr, year; m, months.