Optical Coherence Tomography Angiography Measurements in Eyes with Vitreoretinal Surgery

Purpose To study the retinal detachment (RD) results with the aid of OCTA Methods Results


Purpose
To study the retinal detachment (RD) results with the aid of OCTA

Methods
In the present corss-sectionally designed study 11 patients were enrolled. Eyes with retinal detachment surgical procedures served as study group and the fellow eyes without any retinal detachment surgical procedures served as control group.

Results
The mean age of 11 patients was 59.72±9.94 years. The mean BCVA of the study was 0.43±0.31 and mean BCVA of the control group was 0.86±0.23 in decimal (P=0.01). The mean IOP of the study group 15.72±1.55 mmHg and the mean IOP of the control group was 16.09±2.17 mmHg (P=0.656).

Conclusion
Optical coherence tomography angiography is an important imaging tool to evaluate retinal super cial and deep layer density and area measurements Background We aimed to assess and compare the optical coherence tomography angiography (OCTA) meausurements in eyes with vitreoretinal surgical procedures and the fellow eyes without any vitreoretinal surgical procedures.

Materials And Methods
In the present corss-sectionally designed study 11 patients were enrolled. Eyes with retinal detachment surgical procedures served as study group and the fellow eyes without any retinal detachment surgical procedures served as control group. The patients had a detailed ophthalmic examination including best corrected visual acuity (BCVA, decimal), intraocular pressure (IOP) and OCTA measurements. Type of surgeries, duration after the surgery, situation of the lens (phakic or pseudophakic) and presence of the silicone were also evaluated. Pars plana vitrectomy (PPV), scleral buckling surgery (SBS) or combination of PPV and SBS were the surgeries performed for the patients. Super cial foveal density, super cial parafoveal density, super cial superior hemi eld density, super cial inferior hemi eld density, deep foveal density, deep parafoveal density, deep superior hemi eld density, deep inferior hemi eld density, foveal avascular zone (FAZ), FAZ perimeter, central retinal thickness (CRT), outer retina ow area and choriocapillaris ow area were the measurements assessed in OCTA. Density measurements were calculated as percentage (%), area measurements were calculated as mm 2 , and CRT was measured as um.

Results
The mean age of 11 patients was 59.72±9.94 years. The mean BCVA of the study was 0.43±0.31 and mean BCVA of the control group was 0.86±0.23 in decimal (P=0.01). The mean IOP of the study group 15.72±1.55 mmHg and the mean IOP of the control group was 16.09±2.17 mmHg (P=0.656). Only one eye of the study group was phakic (%9.09). This eye had SBS procedure. Two eyes of the control group were pseudophakic (%18.18). Three, 5 and 3 eyes in the study group had PPV, SBS and PPV+SBS procedures, respectively. Only one eye had combination of PPV and SBS was with silicone. This eye had a 19-month duration following the surgery. The mean time duration of the study group was 27.00±26.43 months (2-84 months). The OCTA measurements of the eyes with vitreoretinal surgery and the fellow eyes are shown on table 1.

Conclusion
Optical coherence tomography angiography is an important imaging tool to evaluate retinal super cial and deep layer density and area measurements. We did not note any statistically signi cant changes in FAZ, FAZ perimeter, CRT, outer retinal ow area and choriocapillaris ow area between the study and control group. We also did not observe any signi cant difference in deep layer density between the groups. However, super cial layers might be signi cantly affected in eyes had vitreoretinal surgery procedure except for the super cial fovea region.