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NR 4-6/2007
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Ocena funkcji plamki
za pomoc± perymetrii statycznej, mikroperymetrii oraz perymetrii
„rarebit” u chorych z postaci± such± AMD
Assessment of the macula
function by static perimetry, microperimetry and rarebit
perimetry in patients suffering from dry age related macular
degeneration
Katarzyna Nowomiejska, Agnieszka
Oleszczuk, Anna Zubilewicz, Jacek Krukowski, Anna Mańkowska,
Robert Rejdak, Zbigniew Zagórski
Z Katedry i I Kliniki Okulistyki Akademii Medycznej w Lublinie
Kierownik: dr hab. n. med. Tomasz Żarnowski |
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| Summary: |
Purpose: To compare the
visual field results obtained by static perimetry,
microperimetry and rabbit perimetry in patients
suffering from dry age related macular degeneration (AMD).
Material and methods: Fifteen eyes with dry AMD (hard or
soft macula drusen and RPE disorders) were enrolled into
the study. Static perimetry was performed using M2
macula program included in Octopus 101 instrument.
Microperimetry was performed using macula program (14-2
threshold, 10dB) within 10° of the central visual field.
The fovea program within 4° was used while performing
rarebit perimetry.
Results: The mean sensitivity was significantly lower
(p<0.001) during microperimetry (13.5 dB) comparing to
static perimetry (26.7 dB). The mean deviation was
significantly higher (p<0.001) during microperimetry
(-6.32 dB) comparing to static perimetry (-3.11 dB). The
fixation was unstable in 47% and eccentric in 40% while
performing microperimetry. The median of the “mean hit
rate” in rarebit perimetry was 90% (range 40-100%). The
mean examination duration was 6.5 min. in static
perimetry, 10.6 min. in microperimetry and 5,5 min. in
rarebit perimetry (p<0.001). Sensitivity was 30%, 53%
and 93% respectively.
Conclusions: The visual field defects obtained by
microperimetry were more pronounced than those obtained
by static perimetry. Microperimetry was the most
sensitive procedure although the most time-consuming.
Microperimetry enables the control of the fixation
position and stability, that is not possible using the
remaining methods. Rarebit perimetry revealed slight
reduction of the integrity of neural architecture of the
retina. Microperimetry and rarebit perimetry provide
more information in regard to the visual function than
static perimetry, thus are the valuable method in the
diagnosis of dry AMD. |
| Słowa kluczowe: |
mikroperymetria,
perymetria „rarebit”, perymetria statyczna, AMD. |
| Key words: |
microperimetry, rarebit
perymetry, static perymetry, AMD. |
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