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BACKGROUND: Achilles tendon adhesion after Achilles tendon injury can lead to decreased biomechanical properties, weakened healing ability, and ultrastructural changes of Achilles tendon, which further affects patients’ daily life and work ability. Therefore, how to effectively deal with and prevent Achilles tendon adhesion has become a hot and difficult problem in clinical treatment. OBJECTIVE: To analyze the effects of biological amniotic membranes on postoperative Achilles tendon adhesion, biomechanics, and ultrastructural changes in rats with Achilles tendon rupture. METHODS: Sixty 6-week-old SD rats were selected to establish bilateral Achilles tendon rupture models and divided into two groups (n=30 per group) by the random number table method. In the model group, the severed end of the tendon was sutured directly. In the amniotic membrane group, the biological amniotic membrane was wrapped around the broken anastomosis and fixed by a suture. The adhesion, biomechanics, morphology, and structure of the Achilles tendon and the expression of p38 and ERK1/2 protein were evaluated 1, 2, and 4 weeks after surgery. RESULTS AND CONCLUSION: (1) 1 week after operation, the Achilles tendon and peritendinous tissues of the two groups were mildly edema, and the adhesion of the Achilles tendon tissues in the model group was more obvious. 2 weeks after the intervention, the Achilles tendon and peritendinous tissues of the model group still had edema, and the adhesion degree between the Achilles tendon and the surrounding tissues was heavier than that of the amniotic membrane group. 4 weeks after operation, there was no edema around the Achilles tendon in both groups, and the healing was well. The adhesion degree of the Achilles tendon in the amniotic membrane group was less than that in the model group. The maximum tension of Achilles tendons in the amniotic membrane group was higher than that in the model group at 2 and 4 weeks after operation (P < 0.001). (2) Hematoxylin-eosin staining and transmission electron microscopy revealed that 1 week after operation, the tendon structure of rats of the two groups was disordered and the collagen fibers were sparsely arranged, in which the model group demonstrated obvious inflammatory reaction and adhesion to the Achilles tendon. Two weeks after operation, the model group still demonstrated obvious inflammatory response, adhesion of Achilles tendon, and irregular ordering of collagen fibers. The amniotic membrane group exhibited an orderly arrangement of collagen fibers and expansion of the endoplasmic reticulum of fibroblasts. At 4 weeks after operation, the collagen fibers of the Achilles tendon in the model group were thickened and disordered, and the rough endoplasmic reticulum was less in the fibroblasts, while the collagen fibers in the amniotic membrane group were ordered and thin, and the fibroblasts contained a large number of rough endoplasmic reticulum. (3) Four weeks after operation, western blot assay exhibited that the expressions of p38 and ERK1/2 protein in the Achilles tendon tissue of rats in the amniotic membrane group were lower than those in the model group (P < 0.05). (4) The results confirm that the biologic amniotic membrane can promote the healing and inhibit the adhesion of Achilles tendon after the operation of the ruptured Achilles tendon, which may be associated with the regulation of the MAPK/ERK signaling pathway. [ABSTRACT FROM AUTHOR]

AIM: To investigate the application of biological amniotic membrane soaked in pirfenidone(PFD)and to evaluate its anti-scarring effect and toxic side effects on glaucoma model of rabbit eyes.METHODS: The right eyes of 72 healthy New Zealand white rabbits were randomly divided into 0.5%PFD+ biological amniotic membrane group, biological amniotic membrane group, mitomycin C(MMC)group and blank control group after the glaucoma model was established by anterior chamber injection of compound carbomer solution, and 18 rabbits in each group underwent trabeculectomy, in which the 0.5% PFD+ biological amniotic membrane group was placed with 0.5% PFD solution-soaked biological amniotic membrane under the scleral flap, and the biological amniotic membrane group was placed with normal saline-soaked rehydrated biological amniotic membrane under the scleral flap. In the MMC group, a cotton pad soaked in MMC was placed under the scleral flap for 3 min and immediately rinsed with normal saline, while the blank control group received no implant after the scleral flap was made. The intraocular pressure(IOP), filtration blebs, toxic side effects and complications were evaluated, and the histopathological changes in the filtration area were observed by hematoxylin-eosin(HE), Masson staining and immunohistochemical staining.RESULTS: The mean IOP at 14, 21 and 28 d after trabeculectomy were 0.5%PFD+ biological amniotic membrane group

AIM: To investigate the clinical effect and stability of biological amnion membrane coverage combined with corneal bandage lens for patients with chemical burns of ocular surface.METHODS: Retrospective study. The clinical data of 49 cases(49 eyes)of patients with chemical burns of ocular surface treated in our hospital between December 2018 and August 2021 were collected. They were divided into the biological amnion membrane coverage group and the biological amnion membrane coverage combined with corneal bandage lens group according to the surgical method. The loss time of biological amniotic membrane, postoperative pain score, repair rate and time of ocular surface, visual acuity and complications were compared between the two groups.RESULTS: The ocular pain scores of the two groups were 2.208±0.758(the biological amnion membrane coverage group)and 2.063±0.800(the biological amnion membrane coverage combined with corneal bandage lens group)at 1d after surgery, respectively(P>0.05). But at the 3d and 7d after surgery, pain scores were 1.844±0.762 and 1.150±0.582, 1.684±0.820 and 0.750±0.514, respectively(all P0.05). Additionally, there was no differences in the complications of both groups(P>0.05).CONCLUSION:Biological amnion membrane coverage has effective treatment effects on patients with chemical burns of ocular surface, and it can delay the loss time of biological amniotic membrane, increase repair rate of ocular surface and alleviate postoperative discomfort if combined with corneal bandage lens.

Objective To analyze the clinical effect of biamniotic membrane in single eyelid reconstruction after double eyelid. surgery. Methods A total of 13 patients (26 eyes) who requested single eyelid reconstruction after double eyelid surgery were given the blepharoplasty. According to the number of original operations, the patients were divided into one operation group (group A, 6 patients) and multiple operation group (group B. 7 patients). Autologous fat and biological amniotic membrane were used during the operation to prevent adhesion. The follow-up time was 6 months. Results The wound healing was good in all the beauty seeking patients after surgery, no amniotic rejection, infection and other phenomena occurred. After surgery, 22 eyes with drag, tightness, foreign body sensation and other symptoms disappeared or obvious regression, accounting for 84.6%. Teneyes (38.5%) returned to single eyelid status completely. Local adhesion and fold of double eyelid line occurred in 4 eyes (15.4%). In group A (12 eyes). 6 eyes recovered to single eyelid state, accounting for 50.0%. In Group B (14 eyes), only 4 eyes recovered to single eyelid status, accounting for 28.6%, and there was no statistical significance between them (P=0.442). Conclusion It is safe and effective to use biological amniotic membrane in single eyelid reconstruction after double eyelid surgery. [ABSTRACT FROM AUTHOR]

Background : To observe the impact of application of bio-amniotic membrane immersed in 5-fluorouracil solution in trabeculectomy on the retina in a rabbit model. Materials and Methods : Healthy white New Zealand rabbits were randomly assigned into three groups with 20 in each group. Bio-amniotic membranes of 4 × 5 mm immersed in either physiological saline/water for 10 min, or 25 mg/mL 5-fluorouracil solution for 5 and 10 min, respectively, were applied on rabbit eyes during trabeculectomy. At 7, 14, 21, and 28 days of postoperation, five rabbits from each group were examined with electroretinogram (ERG). After being examined for eye pressure and bleb morphology, rabbits were sacrificed by air embolism and their retinas were collected and examined by transmission electron microscopy (TEM). In addition, 5-fluorouracil amount in bio-amniotic membranes was measured using high-performance liquid chromatography. Results: Each bio-amniotic membrane could absorb 59.004 μg and 75.828 μg 5-fluorouracil after being immersed in 5-fluorouracil solution for 5 and 10 min, respectively. Application of these bio-amniotic membranes in trabeculectomy could promote the formation of well-functioning bleb and maintain intraocular pressure, although it had no effect on retina structures as examined with ERG and TEM. Conclusion: Application of 5-FU soaked bio-amniotic membrane in rabbit eye trabeculectomy is effective and safe.

Background: Choroidal coloboma, especially with optic disc involvement affects the blood vessel (BV) pattern in the fundus. Aim: The aim of this study was to report the observations on the pattern of retinal BVs in eyes with fundus coloboma. Design: Retrospective observational study. Materials and Methods: Twenty four eyes of 19 patients with fundus coloboma and the disc involvement in the coloboma was classified according to a previous publication. Results: Four varieties of BVs were identified in the area of coloboma - BVs that were continuous with those arising from the optic disc; vessels emanating from the floor of coloboma whose continuity with central retinal artery or its branches could be indirectly established; and those emanating from the floor of coloboma whose continuity with central retinal artery could not be established. In addition, extraocular BVs were visible through the thinned sclera. The retinal BVs often traversed the coloboma to reach the normal retina. The disc itself was found to be small and had no physiological cup (if not colobomatous). Conclusions: One should be aware of the major BVs transgressing the coloboma while performing relaxing cuts in the intercalary membrane, during the surgery for retinal detachments in eyes with coloboma. Physiological cup is usually absent (when the disc is not colobomatous). Hence, any cupping in such eyes should be viewed with suspicion.

Purpose: To report on the clinical features and etiology of patients with retinal vasculitis (RV). Materials and Methods: We reviewed medical records of 47 patients (75 affected eyes) diagnosed with RV. Clinical presentations, ocular complications, associated systemic diseases, and treatment regimens were registered. Results: Etiology of RV included infectious causes in 10/47, (21%) while an association with systemic and/or ocular non-infectious disorders was noted in 22/47 (47%). Eales′ disease and Behcet′s disease represented the most common clinical entities in non-infectious group while tuberculosis-associated RV was diagnosed in 6/10 (60%) among those with infectious disorders. RV was bilateral in 28/47 (60%) patients. Retinal veins were most commonly affected (72%, 34/47). Involvement of arteries was present in 12/47 (25%) and was associated with viral infections and Behcet′s disease. Ocular complications developed in 60/75 (80%) eyes. The most common complications were elevated intraocular pressure and/or glaucoma (33/75, 44%). Retinal detachment, vitreous hemorrhage, and cystoid macular edema developed in similar percentages (15%). Conclusions: RV in Thailand manifested mostly in male patients, was typically bilateral and involved mostly veins. Involvement of arteries was observed in patients with viral infections and Behcet′s disease. Tuberculosis was the most common infectious cause.

Background/Aim: The Andhra Pradesh Eye disease Study (APEDS) was a conventional cross-sectional study conducted in four locations during 1996-2000. Ten years later, a Rapid Assessment of Refractive Errors (RARE) survey was conducted in one of the geographical regions. The prevalence of visual impairment (VI), uncorrected refractive error (URE), spectacles use obtained from both the surveys was compared. Settings and Design: Rural settings; cross-sectional studies. Materials and Methods: In both the surveys, distance visual acuity (VA) was assessed using a logMAR chart. Pinhole VA was assessed if presenting VA was

AIM: To compare clinical effects of three adjuvant therapeutics to primary pterygium excision. METHODS: This is a prospective, randomized, one-blinded trial. One hundred and sixty adult patients with advanced pterygium were randomly divided into amniotic membrane transplantation(Group A, 68 eyes), amniotic membrane transplantation and mitomycin C application(Group B, 62 eyes)and autologous corneal limbal stem cell transplantation with conjunctival flap(Group C, 60 eyes). Patients were followed up until 12 months after operation. The corneal wound healing time and recurrence rate were analyzed. RESULTS: The corneal wound healing time was 2.1±1.5 days in group A, 2.3±1.2 days in group B and 2.8±1.7 days in group C, respectively. The recurrence rate was 16% in group A, 11% in group B and 7% in group C, respectively. The recurrence rate was similar between group A and B. CONCLUSION: Amniotic membrane transplantation and mitomycin C application is more preferable in improving corneal wound healing and reducing post-operative recurrence after primary pterygium excision.

A 67-year-old former gold miner with rheumatoid arthritis, treated with steroids and methotrexate, presented to eye casualty with a painful right eye. Examination revealed an anterior uveitis and despite an initial response to topical steroids, the intraocular inflammation worsened with anterior and posterior uveitis development. Re-examination showed a white mass in the peripheral nasal retina initially suspected of being active Toxoplasmosis infection and anti-toxoplasmosis treatment commenced. After improvement and tapering of this treatment, the intraocular inflammation reoccurred. Cytopathological examination of a pars plana vitrectomy obtained vitreous sample that showed a non-diagnostic non-infectious chronic vitritis. The vitreoretinal surgeons elected to do a direct biopsy of the white subretinal mass in the peripheral nasal area. This revealed, quite unexpectedly, an abscess containing pigmented phaeohyphomycosis fungi. This case report documents the multidisciplinary approach that assisted in clinching a final diagnosis and the role of sub-retinal biopsy in this unprecedented scenario.

We present a case of mature congenital orbital teratoma managed with lid-sparing exenteration and dermis fat graft. This is a case report on the management of congenital orbital teratoma. A full-term baby was born in Fiji with prolapsed right globe which was surrounded by a nonpulsatile, cystic mass. Clinical and imaging features were consistent with congenital orbital teratoma. Due to limited surgical expertise, the patient was transferred to Adelaide, Australia for further management. The patient underwent a lid-sparing exenteration with frozen section control of the apical margin. A dermis fat graft from the groin was placed beneath the lid skin to provide volume. Histopathology revealed mature tissues from each of the three germ cell layers which confirmed the diagnosis of mature teratoma. We describe the successful use of demis fat graft in socket reconstruction following lid-sparing exenteration for congenital orbital teratoma.

The aim of present study was to compare the efficacy and safety of fixed combination of brimonidine and timolol with individual components used as monotherapy in patients of primary open angle glaucoma. Patients were randomly assigned to receive brimonidine or timolol or brimonidine-timolol fixed combination, with 30 patients in each group. The mean reduction in intraocular pressure in brimonidine, timolol, and brimonidine-timolol group were 4.29 ± 1.97 mm Hg, 4.34 ± 1.21 mm Hg, and 5.54 ± 1.87 mm Hg respectively at 2 weeks and 4.86 ± 1.16 mm Hg, 5.42 ± 1.50 mm Hg, and 7.36 ± 2.58 mm Hg respectively at 6 weeks. When values of mean reduction in intraocular pressure were compared between brimonidine-timolol fixed combination with brimonidine and timolol, it was found to be statistically significant ( P < 0.05) at 2 weeks and highly significant (0.001) at 6 weeks. The overall frequency of adverse effects was similar in all three groups.

Background: A new emerging complication of trans-scleral fixation of posterior chamber (PC) intraocular lens (IOL) with polypropylene suture is high rates of spontaneous dislocation of the IOL due to disintegration or breakage of suture. Materials: We report a new surgical technique of trans-scleral fixation of posterior chamber intraocular lens (SF PCIOL) with steel suture to eliminate the complication of dislocation of IOL fixed with polypropylene suture in one adult and a child. Results: We successfully achieved stable fixation and good centration of IOL after SF PCIOL with steel suture in these patient having inadequate posterior capsular support. Both eyes achieved best corrected visual acuity 20/40 at 18 months follow-up. Conclusions: Steel suture is a viable option for trans-scleral fixation of posterior chamber intraocular lens.

Cutaneous lupus erythematosus is a previously undiagnosed side-effect of ranibizumab. Here, we present a case of an 82-year-old female Caucasian patient with wet age-related macular degeneration. Following a single intraocular injection of Lucentis (ranibizumab), she developed a subacute cutaneous lupus erythematosus which, with treatment, took nearly 12 months to resolve. This shows that cutaneous lupus erythematosus is a potential side-effect of many medications, including ranibizumab, as in our case and, in an aging population where polypharmacy is a growing reality, clinicians should be aware of how to diagnose and best manage such cases.

We report the case of a 12-year-old male who developed corneal arcus and multiple skin lesions with a 10-year history of xanthomas. The lesions appeared over his fingers, hands, elbows, knees, buttocks and feet. Laboratory studies showed a total serum cholesterol level of 752.1 mg/dL; a triglyceride level of 96.6 mg/dL; a low-density lipoprotein cholesterol level of 661.3 mg/dL. Findings were consistent with homozygous familial hypercholesterolemia. To our knowledge, this is the first such case to be reported from China.

A two and half year old female was admitted at the emergency room suffering from gradually worsening headache followed by nausea. The child presented with reduced level of consciousness and bilateral hypoacusis. The patient was lethargic. Ophthalmic examination showed branch retinal artery occlusion (BRAO). This finding was crucial to the diagnosis of Susac′s syndrome (SS), a rare autoimmune disease characterized by, endotheliopathy of retina, encephalic tissues and cochlea. Magnetic resonance imaging of the brain also showed typical features. Thorough blood investigations did not reveal any other abnormality. Patient was treated with immunosuppressive to prevent her from developing severe sequelae of this disease. The child showed dramatic improvement in her systemic condition within 48 h of starting the treatment. This is the youngest ever and first case report from India.

A 29-year-old man presented with a chief complaint of lateral blindness in the left eye at 4 months after an accidental fall. His best corrected visual acuity was 0.7 in the left eye and 1.0 in the right eye. Visual field test showed a complete bitemporal hemianopic defect without any neurologic symptoms. An orbital computed tomography scan with non-enhancement conducted at the time of the visit showed multiple frontal skull fractures and cerebromalacia a small fracture in the sphenoidal boneboth frontal lobes. No radiological abnormalities of the visual pathway were detected. Optical coherence showed reduced thickness in the retinal nerve fiber layer, primarily in the superior and inferior part of the left eye. To our knowledge, a complete bitemporal hemianopia without neurological deficits is extremely rare in traumatic chiasmal syndrome.