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Table 4 Pre- and postoperative visual acuity and astigmatism

From: Manual mid-stromal dissection as a low risk procedure to stabilize mild to moderate progressive keratoconus

Case no. Max FU in years (m) BSCVA Snellen (Decimal) BCLVA Snellen (Decimal) Cylinder in D SE in D Cylinder in D SE in D
Pre-op Latest FU Pre-op Latest FU Pre-op Latest FU Pre-op Latest FU
1 9.4 (113) 20/60 (0.3) 20/40 (0.5) n.a. 20/40 (0.5) −5.50 − 2.50 −6.00 −4.25
2 3.1 (37) 20/20 (1.0) 20/16 (1.2) n.a. n.a. −5.00 2.50 −5.50 2.50
3 3.0 (36) 20/20 (1.0) 20/16 (1.2) n.a. n.a. −5.00 2.50 −5.50 2.75
4 9.2 (110) 20/25 (0.8) 20/25 (0.8) 20/25 (0.8) n.a. −3.25 −7.13 −6.50 −7.50
5 3.9 (47) 20/50 (0.4) n.a. 20/22 (0.9) 20/50 (0.4) 0.00 0.00 n.a. n.a.
6 8.7 (104) 20/33 (0.6) 20/20 (1.0) n.a. 20/16 (1.2) −4.00 −0.50 −4.00 −1.25
7 8.8 (106) 20/25 (0.8) 20/25 (0.8) n.a. n.a. −4.00 −2.00 −3.50 −1.50
8 7.3 (87) 20/50 (0.4) 20/28 (0.7) 20/33 (0.6) 20/25 (0.8) −6.00 −7.00 −5.00 −2.00
9 6.8 (82) 20/28 (0.7) 20/20 (1.0) 20/25 (0.8) 20/20 (1.0) −1.00 −5.75 −2.75 −8.50
10 8.5 (102) n.a. 20/80 (0.25) 20/28 (0.7) 20/50 (0.4) n.a. n.a. 0.00 −4.00
11 7.3 (87) n.a. 20/28 (0.7) n.a. 20/20 (1.0) −7.50 0.50 −6.00 0.50
12 8.1 (97) 20/20 (1.0) 20/16 (1.2) n.a. 20/16 (1.2) −0.50 −2.25 n.a. n.a.
13 7.7 (92) 20/22 (0.9) 20/20 (1.0) n.a. 20/20 (1.0) −3.00 0.25 −3.25 −0.38
14 1.6 (19) n.a. n.a. 20/25 (0.8) 20/100 (0.2) n.a. n.a. n.a. n.a.
15 6.9 (83) 20/100 (0.2) 20/133 (0.15) 20/40 (0.5) 20/33 (0.6) −6.00 −10.00 −4.25 −9.13
16 5.8 (70) 20/50 (0.4) 20/33 (0.6) 20/28 (0.7) 20/20 (1.0) −0.50 −0.25. −3.75 0.13
  1. Max = Maximum; FU = follow-up; m = months; BSCVA = best spectacle corrected visual acuity; BCLVA = best contact lens corrected visual acuity; D = diopters; SE = spherical equivalent; Pre-op = preoperative; n.a. = not available