Article Text
Abstract
Background To establish topographic maps and determine fundus distribution patterns of ocular toxoplasmosis (OT) lesions.
Methods In this retrospective study, patients who presented with OT to ophthalmology clinics from four countries (Argentina, Turkey, UK, USA) were included. Size, shape and location of primary (1°)/recurrent (2°) and active/inactive lesions were converted into a two-dimensional retinal chart by a retinal drawing software. A final contour map of the merged image charts was then created using a custom Matlab programme. Descriptive analyses were performed.
Results 984 lesions in 514 eyes of 464 subjects (53% women) were included. Mean area of all 1° and 2° lesions was 5.96±12.26 and 5.21±12.77 mm2, respectively. For the subset group lesions (eyes with both 1° and 2° lesions), 1° lesions were significantly larger than 2° lesions (5.52±6.04 mm2 vs 4.09±8.90 mm2, p=0.038). Mean distances from foveola to 1° and 2° lesion centres were 6336±4267 and 5763±3491 µm, respectively. The majority of lesions were found in temporal quadrant (p<0.001). Maximum overlap of all lesions was at 278 µm inferotemporal to foveola.
Conclusion The 1° lesions were larger than 2° lesions. The 2° lesions were not significantly closer to fovea than 1° lesions. Temporal quadrant and macular region were found to be densely affected underlining the vision threatening nature of the disease.
- Retina
- Inflammation
- Infection
- Imaging
- Choroid
Data availability statement
Data are available upon reasonable request.
Statistics from Altmetric.com
Data availability statement
Data are available upon reasonable request.
Footnotes
Contributors MH, MSH, AKD, AS, CP and QDN conceived and designed the study. MH, MSH and CK analysed the data. MH, MSH, PO, MSO, HBO, GU, MC, XL, AKD, MNR, DNC, AS, PAK, CP and QDN contributed to acquisition of data. MSH, AKD, AS, PAK, CP and QDN contributed to administrative, technical or material support. MH, MSH and CK wrote the paper. MH, AKD, AS, PAK, CP and QDN critically revised the manuscript. MH and QDN had full access to all study data and takes responsibility for the integrity of the data and the accuracy of the data analysis. QDN is guarantor. Statistical analyses were performed by MSH and CK.
Funding The authors have not declared a specific grant for this research from any funding agency in the public, commercial or not-for-profit sectors.
Competing interests None declared.
Provenance and peer review Not commissioned; externally peer reviewed.