Macular Gradient Measurement in Myopic Posterior Staphyloma Using Optical Coherence Tomography
Korean Journal of Ophthalmology
; : 243-247, 2011.
Article
in English
| WPRIM (Western Pacific)
| ID: wpr-125052
Responsible library:
WPRO
ABSTRACT
PURPOSE:
To evaluate clinical characteristics and the macular gradient in myopic posterior staphyloma with time domain (TD) optical coherence tomography (OCT).METHODS:
Sixty-four staphyloma eyes of 40 patients were examined. Macular gradient (tangent theta) and the location of staphyloma were assessed with OCT imaging. The macular gradient was measured at points 1 mm and 2 mm distant from the fovea. The relationships of the macular gradient with age, axial length, and spherical equivalent were analyzed.RESULTS:
In 8 eyes (12.5%), the bottoms of the staphylomas were in the fovea, and there was no macular gradient. However, in the other 56 eyes (87.5%), the bottoms of the staphylomas were not in the foveal area, and macular gradients existed. Staphylomas were commonly located in the infero-nasal retinal area. The mean macular gradient (tangent theta) was 0.26 +/- 0.08 at 1 mm distance from the fovea and 0.28 +/- 0.10 at 2 mm. No significant relationships were observed between macular gradient and axial length, patient age, or spherical equivalent.CONCLUSIONS:
TD OCT reveals staphyloma location. If the location is outside of the fovea, a macular gradient exists and can be measured by OCT. Axial length measurement error may occur in eyes with poor visual fixation and steep macular gradients.
Full text:
Available
Database:
WPRIM (Western Pacific)
Main subject:
Severity of Illness Index
/
Scleral Diseases
/
Retrospective Studies
/
Follow-Up Studies
/
Disease Progression
/
Tomography, Optical Coherence
/
Myopia, Degenerative
/
Macula Lutea
Type of study:
Observational study
/
Prognostic study
Limits:
Female
/
Humans
/
Male
Language:
English
Journal:
Korean Journal of Ophthalmology
Year:
2011
Document type:
Article