A 24-year-old Chinese gentleman presented with two weeks history of sudden floaters in his right temporal visual field associated with blurring of vision. This ex-smoker also reported chronic, bloody cough for two years and recent pleuritic chest pain. Examination revealed a thin patient with right eye visual acuity of 6/18 associated with optic nerve dysfunction, optic disc swelling and macula star, retinal vasculitis and retinitis. Despite anti-tuberculosis medication and corticosteroids, he developed neovascularisation. Subsequent vitreous haemorrhage necessitated trans pars plana vitrectomy, membrane peeling, endolaser and silicone oil injection. Final visual acuity was 6/9 with quiescent retinopathy.

Frontal mucocele is not commonly masked as upper lid abscess.A 72-year-old Chinese man with underlying hyperthyroidism complained of left upper eyelid swelling of 6 months duration. The swelling had persisted and worsen when intravenous antibiotic was changed oral type. Visual acuity on presentation was hand motion and reverse relative afferent pupillary defect was present. Because the swelling was large and resulted in mechanical ptosis and ophthalmoplegia, a CT imaging was performed, which showed huge left frontal mucocele eroding the supereromedial orbital rim. The left globe was displaced inferolaterally but there was no extension into brain parenchyma. Fundus examination showed pale optic disc with dull macula. Old laser marks were seen at peripheral fundus. Referral to ortholaryngologist was made and endoscopic sinus surgery and evacuation of mucopyocoele was done. Culture and sensitivity of the fluid showed no organism. He recovered well postoperatively with additional two weeks of antibiotics. We highlight the necessity of surgical drainage of mucocele, following a course of antibiotic.
Mucocele

We report a case of a 7-year-old girl who initially presented with painless right eyelid swelling with full extra-ocular movement (EOM). She was treated with intravenous broad-spectrum antibiotics for preseptal cellulitis but her condition worsened. An urgent magnetic resonance imaging (MRI) of the brain and orbit showed orbital abscess, subperiosteal abscess in the medial orbital wall and evidence of sinusitis in the anterior ethmoidal air cells. She underwent Endoscopic Orbital Decompression (EOD) surgery on day 4 of presentation and her condition improved remarkably. We report a case of orbital abscess with subperiosteal abscess in the medial orbital wall. This case highlights the possibility of progression of orbital cellulitis despite administration of a broad-spectrum antibiotic.
Orbital Cellulitis

A 23-year-old lady presented with both eye progressive painless blurring of vision for two weeks in 2011. Prior to that she had malar rash, hair loss, photosensitivity and bilateral leg swelling. Ocular examination showed that visual acuity on the right was 6/60 and on the left was 6/24. Both optic disc were swollen with extensive peripapillary cotton wool spot (CWS), flame shape haemorrhages, dilated and tortuous vessels with macular oedema. Systemic examination revealed blood pressure of 176/111 mmHg, malar rash and alopecia. Diagnosis of grade 4 hypertensive retinopathy secondary to SLE was made. The diagnosis was confirmed by positive ANA/ dsDNA, low C3/ C4 and renal biopsy showed lupus nephritis. She was treated with oral prednisolone, hydroxychloroquine and cyclosporin A. Throughout the monitoring for hydroxychloroquine toxicity, vision over both eyes were 6/9, but serial visual fields showed non-progressive left superior and inferior scotoma while right eye showed inferior scotoma. The intraocular pressure was normal with pink optic disc and cup disc ratio of 0.3. Optical coherence tomography (OCT) showed temporal and nasal retinal nerve fiber layer thinning bilaterally. However, macula OCT, fundus fluorescein angiography and autofluorescence were normal. The visual field defect was concluded secondary to CWS indicating microinfarction of the retinal nerve fiber secondary to previous hypertensive retinopathy. Non-progressive visual field defects may occur after the appearance of CWS in hypertensive retinopathy and it should not be overlooked when diagnosing glaucoma or hydroxychloroquine toxicity.

A 28-year-old Malay woman presented with severe loss of vision in both eyes associated with periocular pain on eye movement. She was completely blind at presentation and examination showed optic discs swelling. Optic nerve imaging showed ‘doughnut sign’, characteristic of optic perineuritis. Steroid was given over six months. Visual function improved gradually and was maintained at one year follow-up. This case highlights the importance of differentiation between optic neuritis and optic perineuritis as visual recovery depends on prolonged management with corticosteroid in optic perineuritis.

A 28-year-old Malay woman presented with severe loss of vision in both eyes associated with periocular pain on eye movement. She was completely blind at presentation and examination showed optic discs swelling. Optic nerve imaging showed ‘doughnut sign’, characteristic of optic perineuritis. Steroid was given over six months. Visual function improved gradually and was maintained at one year follow-up. This case highlights the importance of differentiation between optic neuritis and optic perineuritis as visual recovery depends on prolonged management with corticosteroid in optic perineuritis.
Optic Neuritis

Steroid-induced glaucoma is the most serious complication of the injudicious use of steroids, particularly among children affected by allergic conjunctivitis. This condition is steroid-dependent, and children are commonly being prescribed topical anti-inflammatories, including topical steroids, by general practitioners. Furthermore, topical steroids are also available over the counter, and this availability contributes to overuse without proper monitoring by an ophthalmologist. We present a series of five cases illustrating the devastating effect of unmonitored, long-term use of steroids among children for vernal keratoconjunctivitis. The medications were prescribed initially by general ophthalmologists and were continually bought over the counter by parents. At the presentation to our center, these patients were already compromised visually, exhibiting glaucomatous optic disc changes and high intraocular pressure. The series highlights the optic nerve damage resulting in irreversible visual compromises among children on long-term, topical steroids and the importance of regular monitoring with a low threshold for ophthalmologist referral.

Orbital cellulitis is a potential blinding condition resulting from infection of the orbital contents, including the optic nerve. It may be fatal in cases with extension into the optic canal and subsequently the brain. Common aetiologies include extension of infection from paranasal sinusitis or preseptal cellulitis. This case report depicts the unusual occurrence of orbital cellulitis following a trivial superficial conjunctiva laceration wound from a motor-vehicle accident. Aggressive treatment with systemic antibiotics resulted in good visual outcome. All wound on or around the globe must be diligently treated to prevent such detrimental complication.
Orbital Cellulitis

Radiation retinopathy (RR) is a known complication after radiotherapy for Nasopharyngeal Carcinoma (NPC). This study aims to relate the relationship of RR and radiation dose in patients with NPC through assessment with clinical funduscopy and fundus fluorescein angiogram (FFA). A cross sectional study was conducted on patients with NPC who had completed radiotherapy treatment in the Oncology Clinic, Universiti Kebangsaan Malaysia Medical Centre (UKMMC). Eighty two eyes of 42 patients were examined and the prevalence of RR was found to be 35.4%. The severity of RR is strongly associated with the dose of radiation to the retina (Spearman correlation value=0.48; p<0.001). The common features of RR assessed by FFA were telangiectatic vessels (26.2%) and capillary non-perfusion (14.3%). Retinal neovasularization occurred in 10.7% of eyes. The level of visual deterioration correlated with the severity of RR with 26% of eyes experiencing a visual acuity of 6/18 or worse. More than one third of patients developed RR, with radiation maculopathy being the commonest cause for significant visual loss. FFA is a useful tool in detecting early signs of radiation retinopathy and maculopathy. Keywords:
Nasopharyngeal carcinoma

Extramedullary plasmacytoma is a rare complication from multiple myeloma. We report a 56-year-old lady with underlying multiple myeloma who developed swelling over the left eye. It caused a non-axial proptosis, exposure keratopathy and visual acuity of counting fingers. A tissue biopsy revealed infiltration of tissue fragments with neoplastic plasma cells positive for CD138 and Kappa light chain restrictions consistent with plasmacytoma. Following radio-chemotherapy, the mass shrunk tremendously but her visual outcome remained poor.