Topographic changes simulating keratoconus in patients with irregular inferior epithelial thickening documented by anterior segment optical coherence tomography

Figures & data

Table 1 Demographic, tomographic and epithelial thickness data

Patient	Age	Sex	CL	Stopped CL	MGD	Kmax	Mean K	Corneal thickness apex	Thinnest pachymetry	Epithelial pachymetry inferiorly	Epithelial pachymetry superiorly	Inf-sup	IHD value
1 RE	35	F	Soft	10 Days	Yes	47.1	46	606	600	61	56	5	0.02
1 LE	35	F	Soft	10 Days	Yes	47.3	46.1	617	616	60	58	2	0.021
2 RE	27	F	Soft	10 Days	Yes	44.8	44	537	526	62	57	5	0.021
2 LE	27	F	Soft	10 Days	Yes	45.5	44.3	548	541	61	56	5	0.014
3 RE	54	M	Soft	10 Days	Yes	43.6	42.6	545	540	61	60	1	0.017
3 LE	54	M	Soft	10 Days	Yes	43.3	42.8	544	539	59	57	2	0.01
4 RE	26	F	Soft	10 Days		43	42.1	574	571	58	53	5	0.02
4 LE	26	F	Soft	10 Days		42.6	41.9	584	579	56	52	5	0.015
5 RE	50	F	Non			44.8	43.9	565	563	59	54	5	0.007
5 LE	50	F	Non			45.9	44.3	569	568	63	57	6	0.018
6 RE	59	M	Non		Yes	46.5	45.3	497	494	64	56	8	0.013
6 LE	59	M	Non		Yes	46.7	45.3	533	525	62	57	5	0.026
Mean	41.83					45.09	44.05	559.92	555.17	60.5	56.08	4.42	0.02
SD	13.66					1.66	1.46	33.16	34.31	2.07	2.19	1.93	0.01
Min	26.00					42.60	41.90	497.00	494.00	57.00	52.00	1.00	0.01
Max	59.00					47.30	46.10	617.00	616.00	64.00	60.00	8.00	0.03

Abbreviations: I, inferior; S, superior; CL, contact lens; MGD, meibomian gland dysfunction.

Figure 1 (A and B) Topometric map of the right and left eye of one patient. Note the abnormal IHD and the borderline keratoconus classification in both eyes. (C) Epithelial map of the right and left eye of the same patient; note the relative epithelial thickening inferiorly corresponding to the steep areas noted in A and B.

Figure 2 (A and B) Topometric map of the right and left eye of another patient. Note the abnormal IHD in both eyes, and the borderline keratoconus classification in right eyes. (C) Epithelial pachymetry map of both eyes of the second patient. Note the relative epithelial thickening inferiorly corresponding to the steep areas noted in A and B.

Figure 3 (A and B) Topometric map of the right and left eye, 7 years post PRK of the right eye. (C) Epithelial pachymetry map of both eyes. Note the relative epithelial thickening inferiorly corresponding to the steep areas noted in A and B.