Category Bilimsel Yayınlar

Iridodialysis Repair with Intrascleral Fixation of Flattened Flanged Polypropylene Suture (RETİNA – 2022)

by bart in Bilimsel Yayınlar, Uluslararası Hakemli Dergiler

IRIDODIALYSIS REPAIR WITH INTRASCLERAL FIXATION OF FLATTENED FLANGED POLYPROPYLENE SUTURE

Yazarlar: Fikret Ucar

Yayın tarihi: 2022/3/2

Dergi: RETINA

Yayıncı: LWW

Açıklama

Purpose:
To present the flattened flanged polypropylene suture technique developed to obtain round and stable pupils in patients with iridodialysis.
Methods:
After performing a fornix-based conjunctival peritomy, a flange was created at the tip of a 6.0 polypropylene suture by cautery. In the quadrant of iridodialysis, an ultrathin 30-gauge needle was inserted into the sclera at a distance of 2 mm from the limbus and advanced 1.5 mm intrasclerally, parallel to the limbus. The needle was directed radially into the eye and easily passed through the edge of the peripheral iris. The polypropylene suture was pushed into the lumen of the needle with the help of forceps. After the needle was externalized, the tip of the suture was flanged by cautery and the flange was immediately flattened using a needle holder.
Results:
Six eyes of 6 patients with iridodialysis were enrolled in this study. Postoperatively, the irises remained well …

Yayının Tamamını Görüntüle
Read More

Can bleeding in trabeculectomy be decreased? Effectiveness of brimonidine pre-treatment (European Journal of Ophthalmology – 2022)

by bart in Bilimsel Yayınlar, Uluslararası Hakemli Dergiler

CAN BLEEDING IN TRABECULECTOMY BE DECREASED? EFFECTIVENESS OF BRIMONIDINE PRE-TREATMENT

Purpose: To evaluate the efficacy of preoperative topical brimonidine use to maintain visibility during trabeculectomy and control intraoperative bleeding and postoperative subconjunctival hemorrhage.

Methods: The first group comprised 35 eyes of 34 patients administered brimonidine tartrate 0.15% (Brimogut, Bilim Ilac, Turkey) eye drops 6 and 3 min before surgery, and 33 eyes of 31 patients who received no medication for vasoconstriction formed the second group. Preoperative and postoperative photographs and operation video images were taken and vision analysis software used. Black-and-white images were obtained to identify the blood vessel and surface hemorrhage areas. The surface area of the hemorrhage was calculated by counting the black pixels with Image J software.

Results: There was no significant difference between two groups in terms of baseline (preoperative) eye redness (p > 0.05). In the first group, the eye redness values were 344.7 ± 19.5 pixels preoperatively and 244.1 ± 23.3 pixels at the beginning of the surgery, respectively (p < 0.001). However, no significant change was observed in the second group in eye redness (348.2 ± 17.5 pixels preoperatively and 360.7 ± 26.8 pixels at the beginning of the surgery, p > 0.05). Cautery was used for an average of 11.91 ± 1.96 s in the first group and 25.57 ± 4.66 s in the second to control intraoperative bleeding (P < 0.001).

Conclusion: Preoperative topical brimonidine use in trabeculectomy surgery significantly decreased intraoperative bleeding and postoperative subconjunctival hemorrhage and facilitated bleeding control.

Keywords: Trabeculectomy; brimonidine tartrate; glaucoma; hemostasis; intraoperative bleeding.

Yayının Tamamını Görüntüle
Read More

Influence of incision size on dry eye symptoms in the small incision lenticule extraction procedure (Cornea – 2019)

by bart in Bilimsel Yayınlar, Uluslararası Hakemli Dergiler

INFLUENCE OF INCISION SIZE ON DRY EYE SYMPTOMS IN THE SMALL INCISION LENTICULE EXTRACTION PROCEDURE

Yazarlar: Servet Cetinkaya, Mehmet Gulmez, Emine Mestan, Fikret Ucar, Nermin Ali

Yayın tarihi: 2019/1/1

Dergi: Cornea

Cilt: 38

Sayı: 1

Sayfalar: 18-23

Yayıncı: LWW

Açıklama

Purpose:
To evaluate the influence of incision size on dry eye symptoms in the small incision lenticule extraction (SMILE) procedure.
Methods:
Ninety-four eyes of 47 patients with myopia and/or myopic astigmatism who had undergone the SMILE procedure were enrolled in this study. The patients were divided into 3 groups according to the incision size (2, 3, and 4 mm) applied during the SMILE procedure.
Results:
There were no significant differences among the groups in respect to age and sex (P values 0.251 and 0.974, respectively) and in respect to preoperative, postoperative first day, first week, first month, third month, and sixth month values of the Ocular Surface Disease Index score, tear break-up time, ST1, and staining grades.
Conclusions:
There was no difference in dry eye symptoms with 2-, 3-, and 4-mm incisions. In the learning period of SMILE surgery, larger incision sites can be used to make the …

Yayının Tamamını Görüntüle
Read More

Can toric IOL rotation be minimized? Toric IOL-Capsular Tension Ring suturing technique and its clinical outcomes (Seminars in Ophthalmology – 2022)

by bart in Bilimsel Yayınlar, Uluslararası Hakemli Dergiler

CAN TORIC IOL ROTATION BE MINIMIZED? TORIC IOL-CAPSULAR TENSION RING SUTURING TECHNIQUE AND ITS CLINICAL OUTCOMES

Purpose: In this study, we aimed to evaluate the outcomes of the toric intraocular lens (IOL) and capsular tension ring (CTR) suturing technique in patients with cataract and astigmatism.

Methods: Group 1 comprised 37 eyes of 36 patients to whom the CTR-toric IOL complex was co-implanted after the CTR was sutured to the toric IOL haptic. Group 2 comprised 35 eyes of 33 patients in whom the toric IOL and CTR were implanted without suturing. Both groups were compared in terms of preoperative and postoperative astigmatism, best-corrected visual acuity (BCVA), uncorrected visual acuity (UCVA), and IOL rotation.

Results: The mean rotation degree was 0.54° ± 2.29° in group 1 and 4.28° ± 8.84° in group 2 (p = .01). While there was no significant difference between the postoperative residual astigmatism and the estimated residual astigmatism in group 1, the postoperative residual astigmatism was statistically higher than the estimated residual astigmatism in group 2 (p = .47 and 0.000, respectively). The mean postoperative UCVA was 0.02 ± 0.04 (logMAR) in group 1 and 0.08 ± 0.13 (logMAR) in group 2 (p = .01).

Conclusion: The toric IOL and CTR suturing technique provides excellent rotational stability and astigmatism correction.

Keywords: Astigmatism; Capsular tension ring; Cataract; Toric IOL; Toric IOL-CTR suturing technique.

Yayının Tamamını Görüntüle
Read More

The Results of Preoperative Use of Topical Brimonidine in Strabismus Surgery (Journal of Ocular Pharmacology and Therapeutics – 2020)

by bart in Bilimsel Yayınlar, Uluslararası Hakemli Dergiler

THE RESULTS OF PREOPERATIVE USE OF TOPICAL BRIMONIDINE IN STRABISMUS SURGERY

Purpose: In this study, we wanted to retrospectively evaluate the effect of the use of topical brimonidine on intraoperative bleeding and surgical hemostasis before strabismus surgery. Methods: Brimonidine tartrate 0.15% (Brimogut, Bilim Ilac, Turkey) eye drops were applied 6 and 3 min before surgery to 44 eyes of 22 patients in group 1 for vasoconstriction. Drops were not applied to 46 eyes of 23 patients in group 2. Preoperative and postoperative photographs and video images were taken. Black-and-white images were used to define the surface areas of the blood vessels. The surface area was calculated by counting the black pixels with ImageJ software. Results: In group 1, redness of eye was observed, on average, at preoperative 339.25 ± 11.52 pixels and intraoperative 247.93 ± 10.63 pixels (P < 0.001). But there was no change in group 2 (preoperative 338.87 ± 8.45 pixels to intraoperative 339.71 ± 9.52 pixels, P > 0.05). The incidence of intraoperative bleeding evaluated by the number of eyes on which cautery was used shows that it was significantly less in group 1 than in group 2 (P < 0.001). Conclusions: The use of topical brimonidine before strabismus surgery facilitates clear monitoring of anatomical structures during surgery by effectively controlling hemorrhage. In the postoperative period, it significantly reduces subconjunctival hemorrhage.

Keywords: brimonidine tartrate; hemostasis; hyperemia; strabismus.

Yayının Tamamını Görüntüle
Read More

The Results of Preoperative Topical Brimonidine Usage in Pterygium Surgery (Journal of Ocular Pharmacology and Therapeutics – 2020)

by bart in Bilimsel Yayınlar, Uluslararası Hakemli Dergiler

THE RESULTS OF PREOPERATIVE TOPICAL BRIMONIDINE USAGE IN PTERYGIUM SURGERY

Purpose: To evaluate the reduction of conjunctival and episcleral hyperemia and bleeding in pterygium surgery following the use of topical brimonidine preoperatively. Methods: In this study, 45 patients who had undergone pterygium surgery under topical anesthesia were enrolled. Brominidine tartrate 0.15% eye drops were applied topically to 25 eyes of 25 patients at the sixth and third minutes preoperatively, and no drops were applied to 20 eyes of 20 patients for vasoconstriction. Preoperative and postoperative photographs and video images were taken. Results: Vasoconstriction effects of topical brimonidine tartrate on surface vessels were observed. The surface area of blood vessels was reduced 60% within 5 min; this effect was observed with the help of Photoshop and ImageJ programs and it lasted for ∼20 min. The surgery lasts for 7 min, on average, so the conjunctival whitening formed by brimonidine tartrate provides a safe and comfortable operative area throughout the surgery. Conclusion: We recommend applying brimonidine tartrate before pterygium surgery due to its conjunctival whitening effect to provide a safe and comfortable operative area throughout the surgery.

Keywords: brimonidine tartrate; hyperemia; pterygium; vasoconstriction.

Yayının Tamamını Görüntüle
Read More

Intraocular lens implantation with flattened flanged intrascleral fixation technique in pediatric aphakia (Journal of American Association for Pediatric Ophthalmology and Strabismus – 2022)

by bart in Bilimsel Yayınlar, Uluslararası Hakemli Dergiler

INTRAOCULAR LENS IMPLANTATION WITH FLATTENED FLANGED INTRASCLERAL FIXATION TECHNIQUE IN PEDIATRIC APHAKIA

Purpose: To evaluate the clinical outcomes of flattened flanged intrascleral fixation of the intraocular lens (IOL) in cases of pediatric aphakia without adequate capsular support.

Methods: The medical records of children who underwent flattened flanged intrascleral IOL implantation for aphakia with insufficient capsular support, subluxated cataract, ectopia lentis, and dislocated IOL were reviewed retrospectively. Best-corrected visual acuity, astigmatism, corneal endothelial cell loss, IOL tilt, and intra- and postoperative complications were evaluated.

Results: A total of 21 eyes of 16 patients were included. Mean patient age at time of surgery was 7.1 ± 3.8 years (range, 2-15). Mean follow-up time after surgery was 2.0 years. The mean pre- and postoperative best-corrected visual acuities were 1.03 ± 0.49 logMAR and 0.33 ±0.44 logMAR, respectively (P < 0.001). The mean preoperative astigmatism was 2.2 ± 0.9 D; and the mean postoperative astigmatism, 1.8 ± 0.8 D. The mean IOL tilt was 3.2° ± 3.1° (range, 0°-10°). The mean endothelial loss was 4.8%. Postoperatively, one of the haptics was partially visible in the scleral tunnel in one eye of a patient with Marfan syndrome.

Conclusions: In our study cohort, the flattened flanged IOL fixation technique provided good IOL fixation, with firm haptic fixation, without use of sutures or glue.

Yayının Tamamını Görüntüle
Read More

The effects of trypan blue use on the corneal endothelium during cataract surgery in patients with pseudoexfoliation syndrome (PEX) (Cutaneous and Ocular Toxicology – 2021)

by bart in Bilimsel Yayınlar, Uluslararası Hakemli Dergiler

THE EFFECTS OF TRYPAN BLUE USE ON THE CORNEAL ENDOTHELIUM DURING CATARACT SURGERY IN PATIENTS WITH PSEUDOEXFOLIATION SYNDROME (PEX)

Purpose: In the present clinical study, it was aimed to investigate the possible effects of Trypan blue (TB) use on the corneal endothelium during cataract surgery in eyes with pseudoexfoliation syndrome (PEX) during a three-month follow-up period using the contralateral eye control design.

Methods: This prospective, randomised controlled, individual cohort study included 92 eyes of 46 patients with bilateral PEX and cataracts. While 1% TB was applied to one eye of the patients before capsulorhexis (study group), it was not applied to the other eye (control group). Both groups were compared preoperatively and postoperatively in terms of endothelial cell density (ECD), endothelial cell loss (%), pleomorphism, polymegathism and central corneal thickness (CCT) using specular microscopy.

Results: Preoperative corneal ECD was measured as 2362.56 ± 253.27 in the study group, 2380.84 ± 220.54 in the control group, and 2145.58 ± 221.71 in the study group and 2184.97 ± 200.94 cells/mm2 in the control group in the postoperative 3rd-month follow-up (p = 0.71 and = 0.37, respectively). In addition, there were no significant differences between the two groups in terms of the percentage of hexagonal cells, coefficient of variation (CV), and CCT both preoperatively and postoperatively 3 months later (p = 0.78, =0.39, =0.95 preoperatively and p = 0.31, =0.26, =0.83 postoperatively, respectively).

Conclusion: This study demonstrated that the injection of 1% TB into the anterior chamber for staining the anterior capsule during cataract surgery did not cause significant corneal endothelial changes at postoperative 3rd months, despite the increased fragility of corneal endothelial cells in patients with PEX.

Keywords: Trypan blue; corneal endothelial cell loss; pseudoexfoliation syndrome; toxicity.

Yayının Tamamını Görüntüle
Read More

Xen implantation in patients with primary open-angle glaucoma: comparison of two different techniques (International Ophthalmology – 2020)

by bart in Bilimsel Yayınlar, Uluslararası Hakemli Dergiler

XEN IMPLANTATION IN PATIENTS WITH PRIMARY OPEN-ANGLE GLAUCOMA: COMPARISON OF TWO DIFFERENT TECHNIQUES

Purpose: To compare retrospectively two different techniques of Xen implantation, which are transconjunctival (ab-externo) and standard (ab-interno) techniques.

Methods: Forty-three eyes of 43 patients with primary open-angle glaucoma (POAG) who had Xen implantation operation via transconjunctival (ab-externo) technique comprised Group 1. Of the 43 patients, 20 (46.5%) were males and 23 (53.5%) were females. Their mean age was 61.76 ± 8.81 (41-74) years. Forty-four eyes of 44 patients with POAG who had Xen implantation operation via standard (ab-interno) technique comprised Group 2. Of the 44 patients, 21 (47.7%) were males and 23 (52.3%) were females. The mean age of this group was 63.80 ± 9.78 (38-75) years.

Results: Regarding age and sex, there were no significant differences between the groups (p > 0.05). The mean postoperative 1st day, 1st week, 1st month, 3rd month, 6th month, and 12th month IOPs were significantly lower than the mean preoperative IOP in both groups (p < 0.05). The mean number of anti-glaucomatous agents used postoperatively was significantly lower than the mean preoperative number for both groups (p < 0.05). There was a significantly smaller need for needling in the transconjunctival group (p < 0.05).

Conclusion: Xen implantation is a safe and effective method of reducing IOP and anti-glaucomatous dependence. Potential postoperative complications can be resolved easily. There were no significant differences between the standard method and the transconjunctival method in respect of IOP and re-use of anti-glaucomatous agents. However, there was a significantly smaller need for needling in the transconjunctival group. We recommend further studies to investigate long-term results.

Keywords: IOP; Standard (ab-interno) technique; Transconjunctival (ab-externo) technique; Xen implantation.

Yayının Tamamını Görüntüle
Read More

Posterior capsular vacuuming to avoid PCO formation (International Ophthalmology – 2022)

by bart in Bilimsel Yayınlar, Uluslararası Hakemli Dergiler

POSTERIOR CAPSULAR VACUUMING TO AVOID PCO FORMATION

Aim: To retrospectively evaluate the effectiveness of the capsular vacuuming technique in reducing posterior capsule opacification (PCO).

Methods: Group 1 of the study consisted of 2752 eyes of 2752 patients with a cataract who had undergone phacoemulsification and IOL implantation surgery with anterior, equatorial, and posterior capsular polishing between January 2010 and December 2014. Group 2 consisted of 2761 eyes of 2761 patients with a cataract who had undergone phacoemulsification and IOL implantation surgery with anterior, equatorial, and posterior capsular polishing as well as posterior capsular vacuuming between January 2010 and December 2014.

Results: The mean patient age was 63.45 ± 12.23 years (range, 43-89) in Group 1 and 64.02 ± 13.36 years (range, 40-91) in Group 2. The two groups did not significantly differ with respect to age, sex, preoperative and postoperative uncorrected visual acuity (UCVA), best-corrected visual acuity (BCVA), and intraocular pressure (IOP) measurements (p > 0.05). At the 5-year follow-up, 253 eyes (9.19%) in Group 1 developed PCO requiring Nd:YAG laser capsulotomy, whereas 24 eyes (0.86%) in Group 2 developed PCO requiring Nd:YAG laser capsulotomy (p < 0.001). During capsular vacuuming, posterior capsule rupture was observed in the shape of a hole in only 2 eyes in Group 2. But the IOLs were implanted in the capsular bag in all eyes in both groups.

Conclusion: PCO is the most common complication of cataract surgery; therefore, surgical technique is important in preventing PCO formation. We recommend posterior capsular vacuuming together with anterior, equatorial, and posterior capsular polishing, as this method significantly reduced the PCO rate.

Keywords: Capsule vacuuming; Cataract; Nd:YAG laser capsulotomy; PCO.

Yayının Tamamını Görüntüle
Read More
444 0 246