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NR 1-2/2004
SUPLEMENT
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Pomiar powierzchni
izopter z użyciem półautomatycznej perymetrii kinetycznej (PPK)
u pacjentów z zaawansowaną jaskrą
Quantification of isopters
using semiautomated kinetic perimetry (SKP) in glaucoma patients
with advanced retinal nerve fiber layer (RNFL) loss
Katarzyna Nowomiejska1,2,
Robert Rejdak1, Tomasz Żarnowski1, Elke
Krapp2, Jens Paetzold2, Ulrich Schiefer2,
Zbigniew Zagórski1
1Z Katedry Okulistyki im. Tadeusza Krwawicza i I
Kliniki Okulistyki Akademii Medycznej w Lublinie
Kierownik: prof. dr hab. n. med. Zbigniew Zagórski
2Z Kliniki Okulistyki Uniwersytetu w Tybindze,
Oddział Neurookulistyki, Tybinga, Niemcy
Kierownik: prof. dr Eberhardt Zrenner |
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| Summary: |
Purpose: To
quantify the area of isopters obtained using a new
technique of kinetic visual field examination –
semi-automated kinetic perimetry (SKP) – in case of
advanced retinal nerve fiber layer (RNFL) loss, caused
by glaucoma.
Material and methods: Forty-one subjects (19 men,
22 women; mean age 66,5 ± 12,5 years) suffering from
open-angle glaucoma (30 patients), normal tension
glaucoma (5 patients), juvenile glaucoma (2 patients)
and PEX glaucoma (4 patients) were examined, using SKP
program implemented in Octopus 101 instrument (Haag-Streit,
Koeniz, Switzerland). One eye of each patient was tested
using three stimuli according to the Goldmann
classification. The stimuli III4e and I4e were
obligatory. Additionally one stimulus (I3e or I2e) was
used depending on the character of the defect. The
stimulus angular velocity was kept constant at the level
of 3o/s. Obtained visual field (VF) results were
classified according to the Aulhorn classification into
stage III (26 VF) and IV (15 VF). The areas of isopters
were measured in deg2.
Results: The mean area of isopter III4e was 9860
deg2, I4e – 5171 deg2, I3e – 1093 deg2, I2e – 1093 deg2
in the group of Aulhorn stage III. In the group of
Aulhorn stage IV the mean area of isopter III4e was 7488
deg2, I4e – 3736 deg2, I3e – 1109 deg2 and I2e – 818
deg2. The mean test time was 16 min. (range 9-25 min.),
15.7 min. in the group of Aulhorn stage III and 16,5
min. in the group of Aulhorn stage IV, respectively.
Conclusion: SKP seems to be an effective method
for quantitative assessment and evaluation of isopter
and scotoma areas (in deg2). In this study it was
demonstrated that in case of more advanced stages of
glaucomatous visual field loss (Aulhorn stage IV), the
areas of isopters appeared to be smaller. |
| Słowa kluczowe: |
zaawansowana jaskra,
utrata włókien nerwowych, półautomatyczna perymetria
kinetyczna. |
| Key words: |
advanced glaucoma, retinal
nerve fiber loss, semiautomatic kinetic perimetry. |
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