Lens-Induced Glaucoma: An Audit of Cataract Cases in Hospital Sultanah Nur Zahirah, Kuala Terengganu (HSNZKT).

INTRODUCTION: Cataract is the main cause of preventable blindness worldwide and as such, it is important to identify these patients early before complications develop. Cataracts may progress to become intumescent (phacomorphic) or hypermature (phacolytic). This can lead to lens-induced glaucoma, which may subsequently cause permanent optic nerve damage. OBJECTIVE: To report on lens-induced glaucoma (LIG) of cataract cases treated in Hospital Sultanah Nur Zahirah, Kuala Terengganu (HSNZKT), Malaysia. METHOD: National Eye Database (Malaysia) data from 2011 till 2017 were collected and analysed. RESULTS: A total of 81 (1.08%) cases of lens-induced glaucoma were calculated from 7468 cataract cases treated during the seven years of the study period. The number of cases showed an increasing trend with 0.78% in 2011 to 1.26% in 2017. Most of the patients were in the age group of 70-79 years (44.30%), followed by 60-69 years (34.18%), 50-59 years (11.39%), 80-89 years (7.59%), 40-49 years, and 90-99 years (1.27%). Most of the cases are female (57%). The majority of them (79.75%) underwent cataract operation for the first eye. CONCLUSION:  Overall, this study was able to highlight the significant association between the incidence of LIG and increasing age as well as surgery series (either first or second eye). Therefore, more outreach programs should be conducted in the future to enable younger elderly patients from all areas to receive treatment. More online education and talk series can be organized to increase the community's awareness and acceptance of cataract operations.

Idiopathic Retinitis, Vasculitis, Aneurysms, and Neuroretinitis (IRVAN): Early Treatment Saves Sight.

We report a rare case of bilateral Idiopathic Retinitis, Vasculitis, Aneurysms, and Neuroretinitis (IRVAN) with occlusive vasculitis. A 28-year-old female presented with sudden decreased vision in her left eye for three days. Visual acuity in the right eye was 6/6, whereas it was 6/9 in the left eye. The anterior segment was examined and found to be normal. A fundus examination of the right eye showed an arteriolar aneurysm on the optic disc, vascular sheathing, and generalized retinal pigment epithelial atrophy. The left eye was in worse condition, with a swollen optic disc, disc hemorrhage, multiple arteriolar aneurysms, hard exudates at the peripapillary and macular region, peripheral vasculitis, neovascularization, and vitreous hemorrhage. Optical coherence tomography revealed mild cystoid macula edema (CME) in both eyes. Fluorescein angiography of both eyes demonstrated arteriolar aneurysms, vascular leakage, and peripheral ischemia. There was additional leakage from new vessels and masking secondary to vitreous hemorrhage in the left eye. The results of the systemic evaluation and extensive laboratory testing were negative. She had bilateral retinal photocoagulation and was administered oral prednisolone later with slow tapering due to increasing CME. Her eye condition did not worsen, and she maintained good vision in both eyes. IRVAN, even though rare, should be suspected in patients with occlusive vasculitis, arteriolar aneurysm, and macula exudation. Since the nature of the disease is more aggressive than other ischemic retinopathies, early detection, intervention, and close follow-up are crucial to prevent rapid visual loss.

An atlas to aid delineation of para-aortic lymph node region in cervical cancer: Design and validation of contouring guidelines.

INTRODUCTION: Previous studies have investigated the anatomical distribution of para-aortic lymph nodes (PAN) in patients with cervical cancer. However, an atlas for accurate clinical target volume (CTV) delineation has yet to be defined. The purpose of this study was to design and verify a computerized tomography (CT) atlas to provide guidance for contouring the PAN CTV in patients with cervical cancer. MATERIALS AND METHODS: This prospective study included 21 cervical cancer patients (design cohort) with 39 pathological PAN identified on (18)F-FDG PET-CT. PAN [left lateral para-aortic (LLPA), aorto-caval (AC), right para-caval (RPC) nodes] were delineated on CT simulation scans. Measurements were taken from the volumetric centre of the nodes to the edge of aorta and inferior vena-cava (IVC). Initially the aorta and IVC were expanded by the mean distance to the lymph node centre to create a CTV. Expansion margins were then increased asymmetrically until the CTV resulted in a clinically acceptable number of PAN included. The CTV was validated on a further 10 patients (validation cohort) with 29 PAN. A detailed contouring guide and accompanying visual atlas for elective PAN CTV delineation was created based on the validated margins. RESULTS: For the design cohort (n = 21 patients, 39 PAN), the mean distance from the centre of the node to the aorta was 8 mm (range 4-17) for both LLPA (range 4-17) and AC (range 4-15) regions. Mean distance from the IVC to the centre of the nodes was 5 mm (range 4-6) in the RPC region and 6 mm (range 3-15) in the AC region. No PAN was superior to the T12-L1 interspace or the left renal vein or inferior to the L5-S1 interspace. For validation cohort (n = 10 patients, 29 PAN), mean distance from centre of the node to the aorta was 9 mm (range 5-15) in the LLPA region, 7 mm (range 6.5-14) in the AC region. Mean distance from the ICV to the centre of the nodes was 3 mm (range 2.5-4) in the RPC region and 5 mm (range 3-10) in the AC region. A CTV expansion from the aorta of 10 mm circumferentially and 15 mm laterally, and from the IVC of 8 mm anteromedially and 6 mm posterolaterally resulted in coverage of 97% (38/39) of PAN in the design cohort. On prospective validation, the described CTV included 97% (28/29) of PAN in the validation cohort. CONCLUSION: We propose the following PAN CTV; expansion from aorta of 10 mm circumferentially except 15 mm laterally, expansion from the IVC of 8 mm anteromedial and 6 mm posterolaterally. The suggested CTV includes 97% (28/29) PAN in a validated patient cohort. A detailed guide and accompanying visual atlas is provided to aid delineation of the PAN CTV in patients with cervical cancer.