BioMed Research International

Research Article

Practitioner Learning Curve in Fitting Scleral Lenses in Irregular and Regular Corneas Using a Fitting Trial

Table 2

Demographic data of the patients analyzed in each clinical subgroup included in the present report.


		Total	IC Group	RC Group	p

No. Subjects		85	67 (79%)	18 (21%)	-

No. Eyes Fitted		156	122 (78%)	34 (22%)	-

Gender		43 female (51%) 42 male (49%)	31 female (46%) 36 male (54%)	12 female (67%) 6 male (33%)	-

Subgroup (No. Fittings)			Prim.IC: 80 (66%) Sec.IC: 42 (34%)	LA.RC: 8 (24%) HA.RC: 26 (76%)	-

Age (years)		34.51±10.41 (range: 16 to 65)	35.54± 10.45 (range: 16 to 65)	30.67±9.91 (range: 18 to 35)	0.080+

SimK Flat (D)		43.93±5.51	44.20±6.19 range: 17.03 to 62.92	42.99±1.62 range: 39.45 to 46.01	<0.001

SimK Steep (D)		47.29±6.04	47.78±6.74 range: 18.83 to 65.38	45.58±1.71 range: 43.20 to 45.58	<0.001

Q Flat		-0.65±0.53	-0.71±0.58 range: -2.89 to +0.84	-0.43±0.19 range: -0.86 to -0.11	<0.05+

Q Steep		-0.17±0.69	-0.26±0.71 range: -1.59 to +2.24	0.14±0.51 range: -0.32 to 1.64	<0.05

HC (No. Eyes)	Glasses	73	45	28	-
	Soft CL	19	13	6	-
	RGP	20	20	0	-
	Hybrid	13	13	0	-
	SL	11	11	0	-
	N/P	20	20	0	-

HCVA w/ HC		+0.30±0.30	+0.34±0.31 range: -0.18 to +1.40	+0.16±0.21 range: -0.10 to +0.60	<0.001

LCVA w/ HC		+0.54±0.32	+0.62±0.33 range:+ 0.10 to +1.80	+0.31±0.18 range: +0.08 to +0.9	<0.001

BSC	M (D)	-3.64±3.63	-3.24±3.23 range: -15.00 to +3.00	-4.94±4.57 range: -13.13 to +1.88	0.078
	J0 (D)	0.23±1.02	-0.04±0.92 range: -1.38 to +3.29	1.09±0.89 range: -0.44 to +3.20	<0.001
	J45 (D)	0.20±1.13	0.23±1.26 range: -3.20 to +3.50	0.12±0.61 range: -1.10 to 2.09	0.820

HCVA w/ BSC (LogMAR scale)		+0.26±0.27	+0.31±0.28 range: -0.10 to +1.00	+0.11±0.17 range: -0.10 to +0.60	<0.001

LCVA w/ BSC (LogMAR scale)		+0.51±0.30	+0.58±0.29 range: +0.10 to +1.80	+0.29±0.18 range: +0.08 to +0.90	<0.001

HCVA w/ SL (LogMAR scale)		+0.07±0.15	+0.08±0.15 range: -0.18 to +0.62	+0.06±0.15 range: -0.20 to +0.48	0.650+

LCVA w/ SL (LogMAR scale)		+0.32±0.18	+0.34±0.18 range: +0.02 to +0.94	+0.24±0.15 range: +0.04 to +0.60	<0.05

IC: Irregular Cornea; RC: Regular Cornea; ♀ female; ♂ male; PrimIC: primary ectasia; SecIC: secondary ectasia; LA.RC: Low Astigmatism; HA.RC: High Astigmatism; HC: Habitual Correction; BSC: Best Spectacle Correction; HCVA: High Contrast Visual Acuity; LCVA: Low Contrast Visual Acuity; SL: Scleral Lenses; N/P: No prescription; Q: corneal asphericity; (+) Independent T-test; () Mann-Whitney U independent samples.