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Br J Ophthalmol 82:1026-1032 doi:10.1136/bjo.82.9.1026
  • Original Article
    • Clinical science

Nystagmus in periventricular leucomalacia

Table 4

Occurrence of strabismus and nystagmus characteristics

Patient no Clinical Ober recordings
Strabismus Nystagmus Nystagmus type Ampl (degrees) Freq (Hz) Latent nystagmus
1 exo ## pend 0.5–2 1
2 eso ## SPI 2–3 3 +
3 exo ## SPD 3–5 3
4 eso ## SPI 1–2 5–6 +
5 eso ## SPD 3 1
6 exo # SPD 3 1–2 +
7 exo 0 SPD 1–2 2–3 +
8 exo # pend 3–5
9 eso # SPD 3 2–3 +
10 eso ## SPD 3–5 2–3 +
11 eso # SPD 3–4 1–2
12 exo # pend 2 1
13 exo 0 SPD 2–3 3–4 +
14 exo # SPD beats 3 1 +
15 exo # SPD beats 2 1–2
16 exo # SPD 1–2 2
17 orto 0 SPD 2–3 3
18 eso # SPD 0.5 3 +
19 eso 0 SPI beats 0.5 1–2

  • exo = divergent strabismus; eso = convergent strabismus; ## = clinically easily detectable nystagmus; # = indicates clinically detectable latent nystagmus or intermittent nystagmus; 0 = no clinically detectable nystagmus; SPI = slow phase increasing velocity waveform; SPD = slow phase decreasing velocity waveform; pend = pendular waveform; beats = less than 5 nystagmus beats per 5 seconds; + = presence of latent form of nystagmus.

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