Comparision of Hyperreflective Foci after Treatment of Diabetic Macular Edema Patients between Intravitreal Injections

PURPOSE: To compare the outcomes in patients with diabetic macular edema (DME) treated with intravitreal dexamethasone implants and intravitreal bevacizumab injections.METHODS: A retrospective cohort study was designed using 66 patients with DME treated with intravitreal dexamethasone (n = 35; 35 eyes) and intravitreal bevacizumab (n = 31; 31 eyes). Post-treatment changes in hyperreflective foci in the inner and outer retina were characterized using optical coherence tomography, central macular thickness, outer limiting membrane, and photoreceptor inner segment-outer segment junctions. Visual acuities were analyzed 4 weeks after bevacizumab injections and 8 weeks after dexamethasone injections.RESULTS: Both groups showed a decrease in the number of hyperreflective foci after treatment: from 10.6 ± 11.8 to 6.3 ± 5.9 (p = 0.005) in the intravitreal dexamethasone implant group and from 11.6 ± 8.5 to 7.7 ± 6.7 (p < 0.001) in the intravitreal bevacizumab injection group. The mean central macular thickness in the dexamethasone group changed significantly from 586.8 µm to 297.7 µm after treatment and the visual acuity improved significantly from 0.33 logMAR to 0.38 logMAR after treatment (p < 0.001 and p = 0.018, respectively). The mean central macular thickness in the bevacizumab group showed a significant decrease from 467.1 µm to 353.2 µm after treatment (p < 0.001), but there was no significant change in the visual acuities: 0.34 logMAR to 0.32 logMAR after treatment (p = 0.464).CONCLUSIONS: Both intravitreal dexamethasone implants and bevacizumab treatments in patients with DME showed improved outcomes including a decrease in hyperreflective foci shown by optical coherence tomography.

ASYMMETRY OF PREOPERATIVE INCISION DESIGN MARKINGS FOR UPPER BLEPHAROPLASTY / Шинэ санаа Шинэ нээлт

@#BACKGROUND: Loss of skin elasticity due to redundancy of the upper eyelid (dermatochalasis) and falling of the upper eyelid border to a lower position (blepharoptosis) are often the earliest signs of facial aging. Upper eyelid blepharoplasty is an effective procedure to establish a good eyelid position, and is the most common facial cosmetic procedure [1]. When performing upper eyelid blepharoplasty, eyelid symmetry is essential for a satisfactory surgical outcome. Even if not possible, every surgeon tries to achieve complete symmetry when performing aesthetic eyelid surgery [2]. Several previous studies by surgeons with > 10 years of experience reported how preoperative incision markings should be made to achieve satisfactory surgical outcomes and excellent surgical results for upper eyelid blepharoplasty [3-7]. However, none of these studies investigated naturally occurring asymmetry when applying a preoperative design for upper blepharoplasty incision markings. During the preoperative design step, we noticed certain asymmetric tendencies. We therefore characterised these differences to ensure a more effective preoperative design for upper blepharoplasty incision markings for both eyelids. METHODS: This retrospective study examined 22 patients who underwent bilateral upper blepharoplasty surgery resulting from senile dermatochalasis and/or blepharoptosis. The initial preoperative incision design markings were drawn with the patient sitting upright. Then, with the patient in a supine position, preoperative design photographs were taken. We measured medial canthal excision angle (MCA), maximal lid excision height (MLH), maximal lid excision width (MLW), peak point angle, and peak point distance and compared measurements between both upper eyelids designs using Image J software. RESULTS: The mean MCA for the right side (30.68 ± 10.16°) was significantly different to that for the left side (35.39 ± 13.82°; p < 0.001). The mean MLH for the right side (1.17 ± 0.24 cm) was significantly different to that for the left side (1.24 ± 0.25 cm; p = 0.002). The mean MLW for the right side (0.72 ± 0.19 cm) was significantly different to that for the left side (0.77 ± 0.21 cm; p = 0.011). The mean peak point angle for the right side (15.67 ± 5.09°) was significantly different to that for the left side (18.11 ± 5.49°; p = 0.001). The mean peak point distance for the right side (2.41 ± 0.31°) was significantly different to that for the left side (2.22 ± 0.28 cm; p = 0.001). CONCLUSION: In upper blepharoplasty, the preoperative incision marking design measurements of the left side were significantly greater than those of the right side. The symmetry can therefore be maximised by including the asymmetries in the preoperative design.

Long-term Changes in Refractive Error after Spectacle Use

PURPOSE: To evaluate the long-term changes in spherical equivalent (SE) refractive error and astigmatism in patients after spectacle use. METHODS: A total of 103 patients with refractive error without strabismus and amblyopia who received at least 3 years of follow-up after using spectacles were included in this study. Patients were divided into groups according to the age at which spectacles were used (+0.75 D), and the initial degree of astigmatism (<1.00 D, 1.00 to 3.00 D, ≥ 3.00 D). Changes in the SE refractive error and astigmatism were compared between these groups using mixed linear models.. RESULTS: Patients were followed up for a mean of 9.1 ± 1.6 years. An overall negative shift in SE refractive error and an increasing tendency in astigmatism during follow-up were noted regardless of the age at which spectacles were used (p < 0.001). The myopic group showed the largest negative shift in SE and the largest increase in astigmatism (p < 0.001, p = 0.02 respectively). The low and moderate astigmatism groups were more likely to have significant increases in astigmatism (p < 0.001). CONCLUSIONS: Patients with refractive error showed a negative shift in SE and an increasing tendency in astigmatism regardless of the age at which spectacles were used. Changes in SE and astigmatism may be influenced by the initial degree of SE, and the initial degree of astigmatism may influence changes in astigmatism.