A randomized, fellow eye, comparison of keratometry, aberrometry, tear film, axial length and the anterior chamber depth after eye rubbing in non-keratoconic eyes

Chervenkoff, Jordan V.; Hawkes, Elizabeth; Ortiz, Gabriela; Horney, Deborah; Nanavaty, Mayank A.

doi:10.1186/s40662-017-0084-8

Eye and Vision

Table 1 Parameters pre vs. post rubbing in case and control eyes

From: A randomized, fellow eye, comparison of keratometry, aberrometry, tear film, axial length and the anterior chamber depth after eye rubbing in non-keratoconic eyes

		Cases		p-value*	Controls		p-value*
		Pre-rubbing	Post-rubbing		Pre-rubbing	Post-rubbing
Anterior Keratometry (D) (Mean ± SD)	Mean K1	42.51 ± 1.52 (38.80; 46.30)	42.36 ± 1.53 (38.50; 45.40)	0.003	42.51 ± 1.49 (39.00; 45.70)	42.60 ± 1.48 (38.90; 45.80)	0.087
	Mean K2	43.36 ± 1.73 (39.70; 47.80)	43.40 ± 1.61 (39.70; 46.80)	0.558	43.42 ± 1.64 (39.60; 46.80)	43.47 ± 1.54 (39.80; 46.00)	0.459
	Mean Kmax	44.19 ± 1.75 (40.30; 47.70)	43.46 ± 1.92 (40.40; 50.90)	0.223	44.18 ± 1.61 (40.00; 47.40))	44.36 ± 1.68 (40.70; 49.40)	0.116
Posterior Keratometry (D) (Mean ± SD)	Mean K1	−6.07 ± 0.24 (−6.70; −5.60)	−6.07 ± 0.25 (−6.70; −5.60)	0.799	−6.09 ± 0.25 (−6.80; −5.60)	−6.08 ± 0.24 (−6.80; −5.50)	0.699
	Mean K2	−6.24 ± 0.90 (−7.10; −0.40)	−6.36 ± 0.28 (−7.00; −0.40)	0.324	−6.38 ± 0.29 (−7.20; −5.70)	−6.11 ± 1.82 (−7.20; 6.20)	0.281
	Mean Kmax	44.19 ± 1.75 (40.40; 47.70)	44.36 ± 1.92 (40.40; 50.90)	0.223	44.18 ± 1.61 (40.00; 47.40)	44.36 ± 1.68 (40.70; 49.40)	0.116
Overall anterior corneal power vectors (D)	J0	−0.33 ± 0.32	−0.43 ± 0.36	0.004	−0.38 ± 0.29	−0.37 ± 0.28	0.477
Overall anterior corneal power vectors (D)	J45	−0.02 ± 0.19	−0.03 ± 0.23	0.334	0.02 ± 0.20	0.01 ± 0.19	0.374
Overall posterior corneal power vectors (D)	J0	−0.13 ± 0.06	−0.14 ± 0.06	0.333	−0.14 ± 0.06	−0.13 ± 0.07	0.521
Overall posterior corneal power vectors (D)	J45	−0.00 ± 0.05	−0.00 ± 0.05	0.654	0.01 ± 0.06	0.01 ± 0.06	0.939
ACD (mm) (Mean ± SD)		2.85 ± 0.39 (2.12; 3.77)	2.85 ± 0.39 (2.07; 3.74)	0.057	2.85 ± 0.39 (2.10; 3.83)	2.85 ± 0.39 (3.84; 2.10)	0.601
AL (mm) (Mean ± SD)		23.71 ± 1.05 (21.26; 26.42)	23.73 ± 1.11 (21.54; 27.30)	0.124	23.71 ± 1.06 (21.26; 26.42)	23.78 ± 1.09 (21.54; 27.30)	0.133
TBUT (sec) (Mean ± SD)		5.31 ± 2.58 (2.00; 10.00)	3.92 ± 2.32 (1.00; 10.00)	<0.001	5.31 ± 2.66 (2.00; 10.00)	4.86 ± 2.49 (1.00; 10.00)	0.096

Abbreviations: D = Diopters; ACD = Anterior chamber depth; AL = Axial Length; mm = millimetres; SD = standard deviation * paired t test

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