Absence of the foveal avascular zone in a nanophthalmic child revealed by optical coherence tomography angiography
| Autor: | Shunsuke Funakoshi, Yoshiaki Kiuchi, Yosuke Harada, Tai-ichiro Chikama, Tomoko Yoshikawa |
|---|---|
| Jazyk: | angličtina |
| Rok vydání: | 2019 |
| Předmět: |
medicine.medical_specialty
Visual acuity genetic structures media_common.quotation_subject Nanophthalmos Absence of foveal avascular zone 03 medical and health sciences chemistry.chemical_compound 0302 clinical medicine lcsh:Ophthalmology Ophthalmology Case report Atropine sulfate medicine Contrast (vision) media_common business.industry OCT angiography Retinal Optical coherence tomography angiography Foveal avascular zone University hospital eye diseases chemistry lcsh:RE1-994 030221 ophthalmology & optometry sense organs medicine.symptom business 030217 neurology & neurosurgery Bright light |
| Zdroj: | American Journal of Ophthalmology Case Reports, Vol 13, Iss, Pp 34-37 (2019) American Journal of Ophthalmology Case Reports |
| ISSN: | 2451-9936 |
| Popis: | Purpose: Optical coherence tomography angiography (OCTA) is a new non-invasive imaging technique that does not require the use of contrast agents and that allows the visualization of the retinal microvasculature in a layer-by-layer manner without bright light. This merit allows us to obtain the fundus image in children. Retinal vessels are typically absent from the center of the fovea, an area known as the foveal avascular zone (FAZ). The purpose of the present case study was to evaluate the FAZ in a nanophthalmic pediatric patient with OCTA. Obsevations: A 6-year-old girl was referred to the Hiroshima University Hospital because of her poor vision. She had a best-corrected visual acuity of 20/125 in the right eye and of 20/100 in the left eye. The refractive errors after the administration of atropine sulfate eye drops were +13.00D in the right eye and +14.00D in the left eye. The axial lengths were 17.03 mm in the right eye and 16.90 mm in the left eye. At 9 years of age, the patient was diagnosed with nanophthalmos and OCTA was used to investigate the superficial and deep retinal layers. We demonstrated that the FAZ could not be observed in either eye, whereas the FAZ was readily observed in both eyes of a control subject of similar age. Conclusion and Importance: OCTA is a useful technique to reveal the absence of the FAZ in cases of nanophthalmos. Because OCTA is a non-invasive and rapid procedure that is ideal for use with children. Keywords: Nanophthalmos, OCT angiography, Absence of foveal avascular zone |
| Databáze: | OpenAIRE |
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