case_images: PMC5546777_01
case_images: Humphrey visual field test showed normal visual field in the right eye (A) and diffuse depression of visual field in the left eye (B).. Abbreviations: GHT, glaucoma hemifield test; MD, mean defect; NEG, negative; POS, positive; PSD, pattern standard deviation.
case_images: imcrj-10-263Fig1a.jpg
case_images: PMC5546777_01_imcrj-10-263Fig1a.jpg
case_images: f1-imcrj-10-263
case_images: Visual field test showed a normal right visual field and generalized depression of left visual field with a mean defect (MD) of -32.63 decibels (dB) (Figure 1).
case_images: MRI of brain and orbits showed a discrete nodule of low T1 (A) and high T2 (B) signals at the left orbital apex, compressing the superior rectus muscle and optic nerve. Incidental finding of right ethmoidal cystic lesion; possibly, a mucocele was noted in this imaging.. Abbreviation: MRI, magnetic resonance imaging.
case_images: imcrj-10-263Fig2.jpg
case_images: PMC5546777_01_imcrj-10-263Fig2.jpg
case_images: f2-imcrj-10-263
case_images: MRI of brain and orbit showed presence of a discrete orbital nodule measuring 14.77x12.58 mm at the left orbital apex (Figure 2).
case_images: Humphrey visual field test showed improvement of visual field depression with residual inferior field defect of the left eye postoperatively.. Abbreviations: GHT, glaucoma hemifield test; MD, mean defect; NEG, negative; POS, positive; PSD, pattern standard deviation.
case_images: imcrj-10-263Fig3.jpg
case_images: PMC5546777_01_imcrj-10-263Fig3.jpg
case_images: f3-imcrj-10-263
case_images: There was improvement of visual field assessment with residual inferior visual field defect (Figure 3).
case_images: Contrast-enhanced CT of paranasal sinuses done prior to functional endoscopic sinus surgery, showed no orbital cystic lesion at the left orbital apex.. Abbreviation: CT, computed tomography.
case_images: imcrj-10-263Fig4.jpg
case_images: PMC5546777_01_imcrj-10-263Fig4.jpg
case_images: f4-imcrj-10-263
case_images: FESS 4 years earlier was retrieved and showed no orbital lesion at the left orbital apex (Figure 4). Finally, a diagnosis of compressive optic neuropathy secondary to orbital apex cyst post-FESS was made in this patient.