scholarly journals Densitometric assessment of corneal transparency after correction of moderate myopia by femtosecond extraction of the lenticule through a small incision and using laser keratomilesis in situ with femtosecond assistance

2021 ◽  
pp. 40-47
Author(s):  
O.V. Pisarevskaya ◽  
◽  
A.G. Shchuko ◽  
T.N. Iureva ◽  
◽  
...  
Keyword(s):  
Visual Acuity ◽  
Postoperative Period ◽  
Early Postoperative Period ◽  
Preoperative Period ◽  
Corneal Transparency ◽  
Small Incision ◽  
Corneal Densitometry ◽  
Corneal Structure ◽  
Cellular Components

Relevance. The study of the mechanisms of insufficiently rapid achievement of high visual acuity in the early postoperative period in the correction of myopia by the SMILE method is relevant. Purpose. To evaluate changes in corneal densitometry parameters after SMILE and FS-LASIK surgery in patients with moderate myopia. Material and methods. A study of 152 patients with moderate myopia was conducted, 68 were operated by SMILE and 84 – FS-LASIK. All procedures were performed using a VisuMax femtosecond laser and a MEL 80 excimer laser (Carl Zeiss Meditec, Germany). Assessment of visual acuity, corneal structure (OCT, Optovue, USA), corneal densitometry (Pentacam Scheimpflug, Germany) were performed before the operation, on the 1st, 5th day, 3, 6, 12 months after the operation. OCT scans were analyzed using the ImageJ program. Results. Оn the 1st day after SMILE, visual acuity (p=0.01) and transparency of the anterior and middle layers of the cornea were reduced than after FS-LASIK in the zone from 0 to 2 mm (p=0.045, p=0.001), from 2 to 6 mm (both p=0.001). These differences became statistically insignificant 5 days after surgery. By three and six months in the FS-ERASER group, the corneal transparency in the middle layers were reduced in the 0–2 mm and 2–6 mm zones (p=0.0001, p=0.001). In both groups, by 12 months, the corneal backscattering reached the values of the preoperative period (p>0,05). Conclusion. Refractive operations SMILE and FS-LASIK are accompanied by a decrease in corneal transparency, which is restored to preoperative values by 12 months. In the early postoperative period, an increase in densitometry indicators and a slower recovery of visual acuity after SMILE surgery may be due to active remodeling of the interface, which includes fragments of collagen fibrils and cellular components inside the intrastromal space. Key words: SMILE, FS-LASIK, densitometry, myopia

scholarly journals Visual outcome of conventional extracapsular cataract extraction with posterior chamber intraocular lens implantation versus manual small-incision cataract surgery

1970 ◽  
Vol 1 (1) ◽  
pp. 13-19 ◽  
Author(s):  
A Gurung ◽  
DB Karki ◽  
S Shrestha ◽  
AP Rijal
Keyword(s):  
Visual Acuity ◽  
Cataract Surgery ◽  
Postoperative Period ◽  
Cataract Extraction ◽  
Posterior Chamber ◽  
P Value ◽  
Extracapsular Cataract Extraction ◽  
Small Incision Cataract Surgery ◽  
Small Incision ◽  
Posterior Chamber Intraocular Lens

Background: An effective method for cataract surgery should be identified to combat cataract blindness. Aim: To study the surgical outcome of conventional extracapsular cataract extraction versus manual small-incision cataract surgery. Materials and methods: A randomized clinical trial was carried out including one hundred eyes (88 patients) which were divided into two groups using systematic randomization: groups of conventional extracapsular cataract extraction with posterior chamber intraocular lens (ECCE with PCIOL) implantation and manual small-incision cataract surgery (MSICS). The postoperative parameters/variables studied were the unaided and best-corrected visual acuity and astigmatism. Statistics: Epi info 2000 version statistical software was used for data analysis and calculation of relative risk, 95% CI and p value. The p value of less than 0.05 was considered as significant. Results: In the immediate postoperative period, unaided visual acuity of =/> 6/18 was achieved in 24 subjects in MSICS group versus 7 in ECCE with PCIOL group (RR=2.05, 95% CI=1.44 - 2.94, p = 0.0002), whereas the same at 6 - 8 weeks postoperatively was found in 28 and 22 subjects in those groups respectively (RR=1.27, 95% CI=0.86-1.89, p=0.23). The astigmatism of =/> 2 at 6 - 8 weeks was found in 35 and 17 subjects from the conventional and MSICS groups respectively ( R=2.28, 95% CI = 1.39-3.73, p=0.0002). Conclusion: Both MSICS and conventional ECCE with PCIOL are safe and effective techniques for treatment of cataract patients. A more rapid recovery of good vision can be achieved with MSICS than with conventional ECCE with PCIOL in the immediate postoperative period. Key words: ECCE; MSICS; visual acuity; astigmatism DOI: 10.3126/nepjoph.v1i1.3668 Nep J Oph 2009;1(1):13-19

scholarly journals Corneal Safety and Stability in Cases of Small Incision Lenticule Extraction with Collagen Cross-Linking (SMILE Xtra)

2019 ◽  
Vol 2019 ◽  
pp. 1-10 ◽  
Author(s):  
Ihab Mohamed Osman ◽  
Hany Ahmed Helaly ◽  
Mohsen Abou Shousha ◽  
Amir AbouSamra ◽  
Islam Ahmed
Keyword(s):  
Visual Acuity ◽  
Cross Linking ◽  
Small Incision Lenticule Extraction ◽  
Distance Visual Acuity ◽  
Small Incision ◽  
Corneal Densitometry ◽  
Lenticule Extraction ◽  
Safety And Stability ◽  
Collagen Cross Linking

Purpose. To assess the safety and stability in cases of small incision lenticule extraction with collagen cross-linking (SMILE Xtra). Methods. This study was a retrospective interventional comparative study that included 60 eyes of 30 patients divided equally into two groups: SMILE Xtra and SMILE alone. The inclusion criteria were patients >18 years of age, myopic error >6 D, thinner cornea <520 microns, and abnormal corneal topography. Outcome data were recorded including uncorrected distance visual acuity and corrected distance visual acuity (UDVA and CDVA), manifest refraction spherical equivalent (MRSE), central corneal thickness, average keratometry, endothelial cell density, corneal resistance factor (CRF), and corneal densitometry. The follow-up period was 24 months. Results. There was a significant difference between the 2 groups regarding UDVA, CDVA, and MRSE at 1 month. In the SMILE Xtra group, 90% of eyes had postoperative UDVA of 20/20 and 97% had UDVA of 20/30 at 24 months. At 24 months, 26 eyes (87%) vs. 25 eyes (84%) were within ±0.50 D of attempted correction in SMILE Xtra and SMILE groups, respectively. Regarding stability, both groups showed improvement of MRSE at 1st month postoperatively and remained stable along the 24 months of follow-up. CRF and corneal densitometry were higher in the SMILE Xtra group along the whole follow-up period (p=0.001). Conclusion. Combining corneal cross-linking with SMILE procedure (SMILE Xtra) is a promising tool to prevent ectasia in high-risk patients. It is a safe and simple procedure that can be offered to patients undergoing SMILE with risk for ectasia. Trial registration no: PACTR201810577524718.

scholarly journals Corneal densitometry after photorefractive keratectomy, laser-assisted in situ keratomileusis, and small-incision lenticule extraction

Eye ◽  
2017 ◽  
Vol 31 (12) ◽  
pp. 1647-1654 ◽  
Author(s):  
F Poyales ◽  
N Garzón ◽  
J Mendicute ◽  
I Illarramendi ◽  
P Caro ◽  
...  
Keyword(s):  
Photorefractive Keratectomy ◽  
Small Incision Lenticule Extraction ◽  
Small Incision ◽  
Corneal Densitometry ◽  
Lenticule Extraction

scholarly journals Use of autologous conditioned platelet-rich plasma in the surgery of rhegmatogenous retinal ­detachment with large and multiple breaks, abruption from the dentate line

2019 ◽  
Vol 100 (4) ◽  
pp. 606-610
Author(s):  
D G Arsyutov
Keyword(s):  
Visual Acuity ◽  
Retinal Detachment ◽  
Postoperative Period ◽  
Rhegmatogenous Retinal Detachment ◽  
Platelet Rich Plasma ◽  
Vitreoretinal Surgery ◽  
Dentate Line ◽  
Early Postoperative Period ◽  
Multiple Breaks ◽  
Late Postoperative Period

Aim. To evaluate the effectiveness of surgical treatment of rhegmatogenous retinal detachment with large and multiple breaks, abruption from the dentate line with the use of 25, 27 Ga subtotal vitrectomy, pneumoretinopexy or silicone tamponade with blocking of retinal defects with the use of autologous conditioned platelet-rich plasma without endolaser coagulation around retinal defects. Methods. The surgery included 25, 27 Ga vitrectomy, posterior hyaline membrane removal, pneumoretinopexy, instillation of 2–3 layers of autologous conditioned platelet-rich plasma deprived of leukocytes and containing 1.5–2 times more platelets than in whole blood into the area of retinal detachment, its break or along the edge of retinotomy till the retinal defect is totally covered. A total of 27 patients with visual acuity 0.03 to 0.9 were treated. Results. In the early postoperative period 93% of patients had total retinal reattachment, in whim retinal detachment was blocked; 2 patients were reoperated. In the late postoperative period (1–12 months) 4 recurrent retinal detachments were registered, which also required reoperation. Visual acuity of the operated patients in the late postoperative period was 0.1–1.0. Conclusion. 25, 27 Ga vitreoretinal surgery of rhegmatogenous retinal detachment with large retinal breaks, abruption from the dentate line, including retinotomy and retinal defects blockage with the use of autologous conditioned platelet-rich plasma without the use of endolaser coagulation is a method which allows achieving total reattachment of retina, better function of the operated eye in most cases.

scholarly journals Clinical Experience of Using Intraocular Lenses

2019 ◽  
Vol 16 (3) ◽  
pp. 304-309
Author(s):  
A. D. Chernysheva ◽  
V. O. Afanasyeva
Keyword(s):  
Visual Acuity ◽  
Postoperative Period ◽  
Early Postoperative Period ◽  
Intraocular Lenses ◽  
Corrected Visual Acuity ◽  
Uncorrected Visual Acuity ◽  
The Mean ◽  
Basic Studies ◽  
The Given ◽  
Observation Period

Aim: to analyze the data obtained from using of intraocular lenses — the hydrophobic IOL Citrin and a hydrophilic IOL Aquamarine, produced by Russian company — NanOptic. Materials and methods. A total of 56 IOLs, produced by NanOptic (38 hydrophobic IOLs Citrine and 18 hydrophilic IOLs Aquamarine) were implanted. The observation period was from 3 to 12 months. The indication for phacoemulsification was age cataract. The age of the patients was 54–85. Patients before the operation were conducted basic studies. The mean uncorrected visual acuity before the operation was (UCVA) 0.121 ± 0.120 (0.001–0.3), and the mean corrected visual acuity was (BCVA) 0.187 ± 0.140 (0.001–0.6). All patients underwent standard phacoemulsification. Results. The early postoperative period was without any complications. In the postoperative period the mean UCVA in patients with “Citrine” and “Aquamarine” was 0.90 ± 0.10 (0.7–1.0) and 0.96 ± 0.07 (0.8–1.0) accordingly, and the mean BCVA was 0.94 ± 0.07 (0.8–1.0) and 0.99 ± 0.02 (0.9–1.0) accordingly. In all cases, the refraction obtained was consistent with the prediction. The error in IOL calculation was minimal and permissible. There weren’t any case of secondary cataract in patients with hydrophobic IOLs, and 3 cases of lens posterior capsule fibrosis of 1 degree in patients with hydrophilic IOLs in 3–12 months observation. The position of IOL in capsule bag was stable. Conclusions. The results of implantation of new Russian-made IOLs on the given parameters appeared to be satisfactory, that allows to recommend them for implantation in cataract surgery.

Local Anesthesia and Conscious Sedation Does Not Affect Patient's Mood and Anxiety Levels during Percutaneous Endoscopic Lumbar Diskectomy: A Prospective Study

2021 ◽  
Author(s):  
H. Yener Erken ◽  
Oguz Karaeminogullari ◽  
Onur Yilmaz ◽  
Kerem Mirel ◽  
R. Ozgur Ozer
Keyword(s):  
Prospective Study ◽  
Operating Room ◽  
Local Anesthesia ◽  
Postoperative Period ◽  
Conscious Sedation ◽  
Early Postoperative Period ◽  
Preoperative Period ◽  
Significant Difference ◽  
Anxiety Levels ◽  
A Prospective Study

Abstract Background and Study Aims Undergoing a surgical procedure can be very stressful for patients and can lead to high anxiety levels during both the preoperative and the postoperative period. Levels of anxiety and fear may depend on multiple factors including the type of anesthesia to be used. The objective of this study is to evaluate whether patient's awareness of the surgical environment in the operating room under local anesthesia and conscious sedation (LACS) affects their mood and anxiety levels. Methods We performed a prospective study for a series of consecutive patients who underwent transforaminal percutaneous endoscopic lumbar diskectomy (PELD) for the treatment of lumbar disk herniation. The patients completed Profile of Mood States (POMS) and State-Trait Anxiety Inventory (STAI) forms in the preoperative period and in the early postoperative period. We divided the patients into two groups according to the type of anesthesia applied during surgery: LACS and general anesthesia (GA) groups. We compared the preoperative and postoperative POMS and STAI scores between groups and the change of these scores between the preoperative and postoperative periods in each group. Results In this study, we included 30 patients who underwent PELD between May and December 2019 and met the inclusion criteria. The GA group consisted of 16 patients and the LACS group consisted of 14 patients. In each group, POMS and STAI scores decreased in the early postoperative period compared with the preoperative period. We found no significant difference in percentage of POMS and STAI TX-1 score changes between the LACS and GA groups. Conclusion The results of our study show that patients' awareness of the surgical environment in the operating room under LACS does not significantly affect their mood and anxiety levels and patients do not seem to endure increased emotional stress during the PELD operation, as compared with PELD operation under GA.

scholarly journals Transorbital Endoscopic Medial Orbitotomy and Decompression of the Optic Nerve in Patients with Endocrine Ophthalmopathy Complicated by Optical Neuropathy

2020 ◽  
Vol 9 (1) ◽  
pp. 167-172
Author(s):  
O. V. Levchenko ◽  
A. A. Kalandari ◽  
N. Y. Kutrovskaya ◽  
K. V. Revazyan
Keyword(s):  
Visual Acuity ◽  
Surgical Treatment ◽  
Optic Nerve ◽  
Optic Neuropathy ◽  
Satisfactory Result ◽  
Postoperative Period ◽  
Conservative Therapy ◽  
Early Postoperative Period ◽  
Medial Wall ◽  
Endocrine Ophthalmopathy

AIM OF STUDY: to improve the results of surgical treatment of patients with endocrine ophthalmopathy complicated by optical neuropathy. For this, medial orbitotomy and decompression of the optic nerve were performed for a patient with endocrine ophthalmopathy, CAS<3, OD=18 mm, OS=23 mm and visual acuity OD=1.0 OS=0.2, using transorbital transconjunctival endoscopic access. The first step was a retro caruncular incision. After that, we defined an access to the medial wall of the orbit with its subsequent resection. Then, we performed ethmoidectomy and approach to the optic nerve canal. Upon completion of bone decompression, we opened periorbitis.RESULTS. The postoperative period was uneventful. In the early postoperative period, regression of exophthalmos was observed OD=18 mm, OS=20 mm, improvement in visual acuity OD=1.0 OS=0.5 . No complications were recorded. A satisfactory result was obtained.CONCLUSION. Transorbital endoscopic medial orbitotomy and optic decompression can be effectively used in the treatment of patients with endocrine ophthalmopathy complicated by optic neuropathy, refractory to conservative therapy. The technique is promising and requires further randomized studies.

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