Journal List > J Korean Ophthalmol Soc > v.56(9) > 1010092

Seo and Park: Optical Coherence Tomography Findings of Optic Nerve Head Drusen in Children and Adolescents

Abstract

Purpose

To analyze the features of optic nerve head drusen (ONHD) observed on the optical coherence tomography (OCT) of pediatric and adolescent patients and to compare the characteristics of diagnosed ONHD pediatric and adolescent patients with the control group.

Methods

We performed a retrospective chart review of pediatric and adolescent patients with nasal elevation or marginal blur-ring of the optic nerve head on either direct ophthalmoscopic examination or fundus photography. Patients were compared with a control group of the same age who had normal optic nerve heads and no abnormal findings except refractive errors under oph-thalmic examination including OCT.

Results

There were 29 eyes (n = 16) with ONHD as a subretinal mass-like lesion on OCT among 84 eyes with nasal elevation or marginal blurring of the optic nerve head on OCT. Thirteen patients (18.8%) were diagnosed with ONHD in both eyes. The fol-lowing 3 groups were compared: group 1, showing nasal elevation or marginal blurring of the optic nerve head on OCT and diag-nosed with ONHD; group 2, without ONHD; group 3, normal controls. The spherical equivalent was significantly different among the groups ( p < 0.001). Compared with group 3, group 1 showed peripapillary retinal nerve fiber layer thickening of the temporal area; however, there was no difference between groups 1 and 2.

Conclusions

Buried ONHD in children and adolescents may be asymptomatic and the diagnosis can be made when a subretinal mass-like lesion is detected on OCT.

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Figure 1
. Case of rapidly progressing buried optic nerve head drusen. (A) Right fundus photograph of 10 year-old male 2 years earlier. (B) Present fundus photograph presenting with nasal marginal blurring of the optic disc. (C-1) Infrared image shows a nasal elevation of the optic disc border. (C-2) A hyperreflective subretinal mass-like lesion (white arrow) is observed posterior to the outer plexiform and outer nuclear layers on the present spectral domain optical coherence tomography (SD-OCT).
jkos-56-1446f1.tif
Figure 2.
Images showing the optic nerve head drusen of the right eye (A, C, E) and normal optic nerve head of the left eye (B, D, F). (A) Right fundus photograph presenting with optic disc swelling. (C) A focal hyper-reflective mass-like lesion (white arrow) is observed posterior to the outer plexiform and outer nuclear layers on SD-OCT. (E, F) The peripapillary RNFL thickness in each eye. SD-OCT = spectral domain optical coherence tomography; RNFL = retinal nerve fiber layer; TS = superotemporal; NS = superonasal; T = temporal; G = general; N = nasal; TI = inferotemporal; NI = inferonasal.
jkos-56-1446f2.tif
Figure 3.
Images showing optic nerve head drusen of both eyes. (A, B) Fundus photographs presenting with optic disc swelling. (C, D) A focal hyperreflective mass-like lesion (white arrow) is seen posterior to the outer plexiform and outer nuclear layer on SD-OCT. (E, F) The peripapillary RNFL thickness in each eye. SD-OCT = spectral domain optical coherence tomography; RNFL = retinal nerve fiber layer; TS = superotemporal; NS = superonasal; T = temporal; G = general; N = nasal; TI = in-ferotemporal; NI = inferonasal.
jkos-56-1446f3.tif
Table 1.
Summary of 16 patients with optic nerve head drusen
Patient Sex Age (years) Eye BCVA (log MAR) Spherical equivarent (D) Cylinder power (D) RNFL th(μ m)
Average N SN ST T IT IN
1 Female 12 OD 0 -1.25 -1.25 110 45 54 137 146 216 89
OS 0 -1 -1 121 85 136 143 99 199 120
2 Female 9 OD 0 -5.5 -1 112 52 112 207 97 190 87
OS 0 -5.5 -0.75 103 27 154 203 89 160 73
3 Male 10 OD 0 -1.75 0 99 67 110 132 75 146 116
OS 0 -1.5 0 100 70 129 142 76 133 101
4 Female 12 OD 0 -2.5 0 100 51 134 111 103 152 93
5 Male 11 OD 0 -5.25 0 97 36 71 109 130 182 79
OS 0 -4.5 -0.75 115 87 161 157 82 145 123
6 Male 9 OD 0.1 -5 0 106 65 150 151 77 151 112
OS 0.1 -6 0 89 63 83 103 68 144 118
7 Male 11 OD 0 -6.5 -1.25 99 68 83 134 99 155 84
OS 0 -6.5 -1.5 142 98 177 226 129 173 106
8 Male 11 OD 0 -2 0 94 55 82 119 88 171 93
9 Male 11 OD 0 -3 -3.5 88 62 86 122 77 129 85
OS 0 -4.5 -3 87 57 120 109 74 122 80
10 Male 12 OD 0 -5.75 -0.5 83 42 80 132 85 135 64
OS 0 -4.5 -2 86 37 85 136 89 138 76
11 Female 3 OD 0 -2 -1 99 55 89 143 85 157 120
OS 0 -3 -2 85 36 57 124 91 157 81
12 Male 12 OD 0 -2.5 0 109 55 135 148 125 138 92
OS 0 -2.75 0 107 58 123 164 102 158 88
13 Female 13 OD 0 -2 -1 108 55 126 155 116 171 68
OS 0 -1.75 -0.5 108 65 126 162 105 165 75
14 Female 8 OS 0 -4.75 -1.75 106 61 119 154 96 178 85
15 Female 11 OD 0 -4.5 -0.75 132 43 82 160 181 258 96
OS 0 -3 -1.5 125 51 131 178 120 237 105
16 Male 9 OD 0 -3 0 116 110 106 150 93 158 111
OS 0 -3 -0.5 110 98 98 160 76 163 107

BCVA = best-corrected visual acuity; log MAR = the logarithm of the minimum angle of resolution; RNFL = retinal nerve fiber layer; N = na-sal; SN = superonasal; ST = superotemporal; T = temporal; IT = inferotemporal; IN = inferonasal; OD = oculus dexter; OS = oculus sinister.

Table 2.
Clinical features of patients according to each group
Group 1 (n = 29) Group 2 (n = 23) Group 3 (n = 33) p-value
Age (average) 10.24 ± 2.4 9.52 ± 1.93 9.43 ± 2.55 0.091§
Male:female 17:12 5:18 21:12 0.005
BCVA (log MAR) 0.01 ± 0.03 0.00 0.00 0.132§
Spherical equivalent (D) -3.61 ± 1.69 -1.77 ± 2.14 -0.17 ± 1.47 <0.001§
Cylinder power (D) -0.88 ± 0.92 -0.32 ± 0.52 -0.82 ± 1.08 0.054§

Values are presented as mean ± SD unless otherwise indicated.

BCVA = best-corrected visual acuity; log MAR = the logarithm of the minimum angle of resolution.

Patients who have optic nerve head drusen;

Patients who have blurred or tilted optic disc but no optic nerve head drusen;

Normal control;

§ Kruskal-Wallis test;

Chi-square test.

Table 3.
Comparison of the retinal nerve fiber layer of the three groups
Nasal Superonasal Superotemporal Temporal Inferotemporal Inferonasal
β p-value§(95% CI, μ m) β p-value§(95% CI, μ m) β p-value§(95% CI, μ m) β p-value§(95% CI, μ m) β p-value§(95% CI, μ m) β (95% CI, μ m) p-value§
Group 1 Reference (n = 29) Reference Reference Reference Reference Reference
Group 2(n = 23) -2.87 0.555 -14.46 0.103 -7.84 0.278 -8.69 0.131 -14.48 0.076 3.53 0.584
(n = 23) (-12.52~6.77) (-31.92~2.98) (-22.11~6.43) (-20.02~2.65) (-30.54~1.57) (-30.54~1.57) (-9.25~16.30)
1.82 0.772 2.69 0.772 1.772 1.17 0.877
Group 3 1.82 2.69 0.772 1.17 0.877 -20.83 0.001 -21.98 0.012 9.07 0.184
(n=33) (-8.35~11.99) (-15.71~21.09) (-13.88~-16.22) (-32.78~-8.87) (-38.91~-5.05) (-4.40~22.54)

CI = confidence interval.

Patients who have optic nerve head drusen;

Patients who have blurred or tilted optic disc but no optic nerve head drusen;

Normal control;

§ Multiple linear regression analysis adjusted by sex and spherical equivalent.

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