scholarly journals The effect of thin lenticule versus thick lenticule (a cut-off value of 55 micrometer) on the outcome of SMILE in low myopia

2020 ◽  
Vol 6 (5) ◽  
Author(s):  
Zaid Yousif Hameed Shukur
Keyword(s):  
Visual Acuity ◽  
Visual Outcome ◽  
Outcome Variable ◽  
Efficacy And Safety ◽  
Corrected Visual Acuity ◽  
Short Period ◽  
Significant Difference ◽  
Uncorrected Visual Acuity ◽  
Effect Difference ◽  
Main Outcome Variable

Objectives: In the current study, the aim was to evaluate the effect difference in lenticule thickness SMILE cases  (≤ 55 µm versus > 55 µm) on the visual outcome in a cohort of 61 patients with low myopia (≤3.0 diopters) Methods: The current prospective cohort study included 61 patients undergoing SMILE refractive procedure during the period extending from November the 14th 2019 through June the 14th 2020, a total of 99 eyes. The study was conducted in Ibsar ophthalmology surgery centre "private medical centre" in the wholly Najaf city, mid-Euphrates region of Iraq. The cases enrolled in the study were all operated on by the same ophthalmologist. According to lenticule thickness, eyes were classified into two groups, (≤ 55 µm versus > 55 µm). The main outcome variable was visual acuity postoperative within two short period of time, one week and 3 months. Results: Comparison of visual acuity between patients with lenticule thickness of ≤ 55 µm and patients with lenticule thickness of > 55 µm was shown in table 6. There was no significant difference in UCVA (uncorrected visual acuity) (P = 1.000), significant difference in BCVA (best corrected visual acuity) (better with lenticule thickness of ≤ 55 µm) (P = 0.037), no significant difference in VAAS (visual acuity after surgery) (P = 0.065) and no significant difference in VA3M (visual acuity 3 months after surgery) (P = 0.599). Conclusion: Thin lenticule of less than or equal 55 micrometer to as low as 41 micrometer can be chosen for SMILE with efficacy and safety comparable to that of thicker lenticule provided that the operation is done by well trained and skilled refractive surgeon.

scholarly journals Transepithelial High Fluence Crosslinking for Keratoconus – Case Report of 1-year Follow-up

2015 ◽  
Vol 09 (01) ◽  
pp. 21
Author(s):  
Roberto Pinelli ◽  
Zahran Yazan Amin ◽  
◽  
Keyword(s):  
Visual Acuity ◽  
Case Report ◽  
Corneal Topography ◽  
High Fluence ◽  
Efficacy And Safety ◽  
Corrected Visual Acuity ◽  
Uncorrected Visual Acuity ◽  
Best Corrected Visual Acuity

Purpose:To evaluate the efficacy and safety of transepithelial crosslinking for halting the progression of keratoconus.Methods:Uncorrected and corrected visual acuity, simulated keratometry, corneal topography and pachymetry data were evaluated at baseline and 1 year after bilateral transepithelial crosslinking using ParaCel™ and the KXL™ device (Avedro, Waltham, Massachusetts, US).Results:The keratometry, uncorrected visual acuity, best corrected visual acuity at the baseline and after 1 year of follow-up was stable and even improved with time.Conclusion:Transepithelial crosslinking can safely and effectively halt the progression of keratoconus as demonstrated by follow-up.

Accelerated Corneal Crosslinking for Treatment of Progressive Keratoconus in Pediatric Patients

2016 ◽  
Vol 27 (3) ◽  
pp. 319-325 ◽  
Author(s):  
Döndü M. Ulusoy ◽  
Emre Göktaş ◽  
Necati Duru ◽  
Ayşe Özköse ◽  
Mustafa Ataş ◽  
...  
Keyword(s):  
Visual Acuity ◽  
Pediatric Patients ◽  
Corneal Thickness ◽  
Efficacy And Safety ◽  
Ultraviolet A ◽  
Corneal Crosslinking ◽  
Corrected Visual Acuity ◽  
Uncorrected Visual Acuity ◽  
Group 2 ◽  
Group 1

Purpose To evaluate the safety and efficacy of accelerated corneal crosslinking (CXL) in patients with progressive keratoconus aged 18 years or less. Methods A total of 28 eyes from 19 patients with progressive keratoconus aged 18 years or less were enrolled. We divided participants into 2 groups according to corneal thickness (CT). Group 1 included 13 eyes of 8 patients with CT ≥450 µm; group 2 included 15 eyes of 11 patients with CT <450 µm. Each participant underwent accelerated CXL using 10-minute ultraviolet A irradiance at 9 mW/cm2 for a total energy dose of 5.4 J/cm2. The efficacy and safety of the procedure were assessed postoperatively at 1, 3, 6, and 12 months with Pentacam and visual acuity. Results In uncorrected visual acuity, group 1 showed a statistically significant +0.12 logMAR improvement at 3 months postoperatively (p = 0.003), and in group 2, there was a statistically significant +0.3 logMAR improvement at 1 month postoperatively (p = 0.005). In best-corrected visual acuity, there was a +0.15 logMAR (p<0.001) and +0.22 logMAR (p = 0.005) improvement in group 1 and group 2, respectively, at 12 months postoperatively. All mean keratometric values including K1 and K2 dropped by at least 1 D or remained stable (< ± 1 D) in both groups after accelerated CXL treatment. Conclusions The findings showed that accelerated CXL treatment seems to be effective in slowing or halting the progression of keratoconus and that no permanent apparent complications are noted 6 months after accelerated CXL.

scholarly journals To evaluate the Role and Efficacy of Collagen Cross-linkage with Ultraviolet Therapy following Riboflavin Drops with Orbscan in Cases of Progressive Keratoconus

2017 ◽  
Vol 6 (2) ◽  
pp. 67-72
Author(s):  
Parmod Guleria ◽  
Vikas Sharma
Keyword(s):  
Visual Acuity ◽  
Mean Value ◽  
Corrected Visual Acuity ◽  
Significant Difference ◽  
Uncorrected Visual Acuity ◽  
Cross Linkage ◽  
The Mean ◽  
Best Fit ◽  
Best Fit Sphere

ABSTRACT Aim To evaluate the role and efficacy of collagen cross-linkage with riboflavin (C3R) in cases of progressive keratoconus. Study design Prospective, nonrandomized, single-center clinical study. Materials and methods The C3R was done in 32 eyes of 21 patients with at least 6 months of documented progression. Outcome of the procedure was measured by means of uncorrected visual acuity (UCVA), best spectacle corrected visual acuity (BSCVA), corneal topography with Orbscan changes in posterior best fit sphere (PBFS), ratio of anterior and posterior best fit sphere (ABFS/PBFS), astigmatic changes in central 3- and 5-mm zone, central endothelial count postcorneal C3R. Results Thirty-two eyes with a follow-up of 6 months were analyzed. The mean age was 19.8 years. The preoperative values on the day of treatment were compared with postoperative values after the 6-month examination. The improvement in UCVA and BSCVA was statistically significant (p = 0.02 and 0.01 respectively). The change in power for PBFS was not statistically significant (p = —0.08). There was no significant difference in corneal endothelial counts pre- and post-C3R (p = 0.058). Mean value pre-C3R for ratio of ABFS/PBFS was 1.25 ± 3.7 and post-C3R was 1.22 ± 1.8 (p = 0.00). Mean value of astigmatism in 3-mm zone pre- and post-C3R was —4.3 ± 0.98 and —3.9 ± 0.66(p = 0.046) respectively. Mean value pre-C3R for astigmatism in 5-mm zone was —4.9 ± 1.91 and post-C3R was —4.0 ± 0.82 (p = 0.02). Conclusion The results show a stabilization and improvement in keratoconus after C3R in Indian eyes. How to cite this article Guleria P, Sharma V. To evaluate the Role and Efficacy of Collagen Cross-linkage with Ultraviolet Therapy following Riboflavin Drops with Orbscan in Cases of Progressive Keratoconus. Int J Kerat Ect Cor Dis 2017;6(2):67-72.

Why does an ophthalmologist wear glasses?

2021 ◽  
pp. 121-123
Author(s):  
L.S. Voskanyan ◽  
◽  
I.V. Zverova ◽  
M.E. Mirgorodskaya ◽  
◽  
...  
Keyword(s):  
Visual Acuity ◽  
Online Survey ◽  
Surgical Interventions ◽  
Work Related ◽  
Corrected Visual Acuity ◽  
Quality Of Vision ◽  
Uncorrected Visual Acuity ◽  
Subsequent Choice ◽  
Personal Use ◽  
Visual Organ

The aim of the study was to identify the reasons for the personal use of vision correction tools by ophthalmologists and the importance of vision for the specialty. Materials and methods. An anonymous online survey was conducted, which was attended by 122 respondents, including 111 ophthalmologists. Results. The visual acuity of two eyes without correction among the respondents was 1.0 and higher in 51 people. The maximum corrected visual acuity with two eyes was: 1.0 and higher in 79 respondents; less than 1.0 to 0.7 inclusive in 12 (those who refrained from answering the question had uncorrected visual acuity of 1.0 and higher). More than half of the respondents (56) suffer from myopia. Among the respondents, 53 use point correction. Of the spectacle lenses, ophthalmologists prefer plastic ones more. 36 respondents use contact correction. Surgical interventions on the organ of vision were performed in 12 patients. All respondents noted that they do not have cataracts, glaucoma, diseases of the optic nerve and color perception disorders. The choice of specialty did not depend on the existing diseases of the visual organ in 101 doctors, 9 people noted the connection between the previous pathologies of the visual organ with the subsequent choice of profession. Conclusions. According to the results of the study, it is possible to note the high maximum corrected visual acuity of ophthalmologists. Despite this, some respondents experience inconveniences at work related to visual impairments. For themselves, ophthalmologists often choose eyeglass correction instead of contact. And of the spectacle lenses, they prefer plastic ones more. The reasons for the use of glasses or contact correction among doctors of this specialty are increased requirements for the quality of vision. Key words: ophthalmologist, myopia, vision, glasses.

Μελέτη της ασφάλειας και αποτελεσματικότητας του ενδοκερατοειδικού διαθλαστικού ενθέματος Flexivue TM Micro-Lens (Presbia, CA Cooperatief U. A, Netherlands) για τη διόρθωση της πρεσβυωπίας

2014 ◽  
Author(s):  
Αλίκη Λιμνοπούλου
Keyword(s):  
Visual Acuity ◽  
Corrected Visual Acuity ◽  
Uncorrected Visual Acuity ◽  
Micro Lens

Η πρεσβυωπία (φυσιολογική γήρανση του μηχανισμού της προσαρμογής) αποτελεί ένα κοινό πρόβλημα για τα άτομα ηλικίας άνω των 40 με 45 ετών. Αρκετές πιθανές θεωρίες έχουν προταθεί σχετικά με την παθολογική φυσιολογία για την ανάπτυξη της πρεσβυωπίας. Η πιο αποδεκτή είναι η σχετιζόμενη με την ηλικία μείωση της ικανότητας του κρυσταλλοειδούς φακού να προσαρμόσει, η οποία επιδεινώνεται προοδευτικά με την αύξηση της ηλικίας 1. Το γεγονός αυτό θα μπορούσε να προκληθεί είτε από την ηλικιακή σκλήρυνση του κρυσταλλοειδούς φακού, είτε από μεταβολές στον περιφακικό σάκο και το ακτινωτό σώμα σχετιζόμενες με ηλικιακές εκφυλίσεις των ιστών. Ανεξάρτητα τον μηχανισμό, η πρεσβυωπία μειώνει την κοντινή όραση. Όταν δε διορθωθεί μπορεί να επηρεάσει την ικανότητα του ατόμου για διάβασμα, τη συμμετοχή του σε διάφορες δραστηριότητες και τελικά την παραγωγικότητα του στην καθημερινή του ζωή 2.Είναι σημαντικό να τονισθεί η σημασία του φαινόμενου της πρεσβυωπίας και το πόσο αυτή επιδρά στην καθημερινή μας ζωή. Σε μελέτες που έγιναν στην Αμερική βρέθηκε ότι το 1998, περίπου 113 εκατομμύρια Αμερικανοί πολίτες ήταν σε ηλικία άνω των 45 ετών, ηλικία που αρχίζει να εμφανίζεται η πρεσβυωπία. Η θεραπεία της πρεσβυωπίας, παρόλο που είναι αποτελεσματική με την χρήση των θετικών διορθωτικών φακών για κοντινή όραση, έχει προκαλέσει το ενδιαφέρον των ερευνητών που έχουν προτείνει μια σειρά από χειρουργικές θεραπευτικές παρεμβάσεις. Η τοποθέτηση σκληρικών ενθεμάτων επέκτασης συνιστά μία χειρουργική τεχνική επιδίωξης αναστροφής της πρεσβυωπίας μέσω αύξησης της απόστασης της ακτινωτής απόφυσης από το σκληρό χιτώνα, με επακόλουθο την ανάκτηση μέρους της ελαστικότητας των ινών της ζιννείου ζώνης 3. Εναλλακτικά, αξιοποιείται η τεχνική της ‘μονο-όρασης’ (monovision), κατά την οποία ο κυρίαρχος οφθαλμός διορθώνεται με laser ή με τοποθέτηση μονοεστιακού ενδοφακού για την εξυπηρέτηση της μακρινής όρασης, ενώ ο έτερος για εκείνη της κοντινής. Ωστόσο, ο ασθενής συχνά αντιμετωπίζει σημαντικά προβλήματα στη διόφθαλμη όραση (όπως η μείωση του βάθους πεδίου και η απώλεια στερέοψης) 4-7. Ένας άλλος τρόπος διόρθωσης αυτού του περιοριστικού παράγοντα είναι με τη χρήση προσαρμοστικών ενδοφακών οι οποίοι ακολουθούν τις κινήσεις της προσαρμογής που υπόκειται ο σάκος του περιφακίου (στον οποίο είναι τοποθετημένοι) από το ακτινωτό σώμα. Αυτοί οι φακοί μπορούν να παρέχουν 0,5-1 διοπτρίες ‘ψευδο-προσαρμογής’8. Συγκριτικές μελέτες απέδειξαν ότι οι προσαρμοστικοί ενδοφακοί παρέχουν την ίδια, άνευ διόρθωσης, μακρινή οπτική οξύτητα, όμως χάνεται η δυνατότητα για κοντινή όραση μετά τους πρώτους έξι μήνες, εξαιτίας μείωσης της ελαστικότητας του περιφακίου (ανάπτυξη μετεγχειρητικών συμφύσεων) 9.Η χρήση πολυεστιακών ενδοφακών τελευταία έχει γνωρίσει ιδιαίτερη αποδοχή τόσο από τους ασθενείς όσο και από τους οφθαλμιάτρους. Ωστόσο και με αυτή τη μέθοδο παρατηρήθηκε μία σχετική μείωση των ποιοτικών χαρακτηριστικών της μακρινής και κοντινής οπτικής οξύτητας με (best spectacles corrected visual acuity-BSCVA)/χωρίς (uncorrected visual acuity-UCVA) διόρθωση καθώς και της ευαισθησίας στην φωτεινή αντίθεση 10, 11.Οι χειρουργικές τεχνικές με τη χρήση laser στο επίπεδο του κερατοειδούς είναι μη αναστρέψιμες, καθώς μεταβάλλουν τη δομή του ιστού μέσω φωτοδιάσπασης, ενώ ο ασθενής ενδεχομένως να υποστεί μελλοντικά επιπλέον επέμβαση στους οφθαλμούς του για την αποκατάσταση του καταρράκτη. Οι χειρουργικές τεχνικές που αφορούν το σκληρό και τον κρυσταλλοειδή φακό, είναι πιο επεμβατικές και ακρωτηριαστικές για τους νέους πρεσβύωπες μέχρι 50 ετών στους οποίους ο φακός διατηρεί κάποιες εφεδρείες προσαρμογής. Έτσι, η επιστημονική κοινότητα αναζητά μία ελάχιστα επεμβατική και δυνητικά αναστρέψιμη χειρουργική τεχνική για τη διόρθωση της πρεσβυωπίας σε ασθενείς 45-55 ετών. Με βάση τα παραπάνω, η έρευνα για την διόρθωση της πρεσβυωπίας έστρεψε το ενδιαφέρον της εκ νέου στο επίπεδο του κερατοειδούς. Το τελευταίο, πολλά υποσχόμενο, επίτευγμα της επιστημονικής αυτής αναζήτησης είναι η κατασκευή ενδοκερατοειδικών διαθλαστικών ενθεμάτων 12. Το "FlexivueTM system " είναι μία τεχνική σχεδιασμένη να εισάγει ένα μικρού μεγέθους οπτικό φακό με θετική διαθλαστική δύναμη στο στρώμα του κερατοειδούς σε ένα σημείο ακριβώς απέναντι από το κέντρο της κόρης. Πρόκειται στην πραγματικότητα για ένα διπλοεστιακό φακό πάχους 15 μm και διαμέτρου 3 mm που τοποθετείται στον μη-επικρατούντα οφθαλμό. Λόγω της διπλοεστιακότητας του φακού η μακρινή όραση στο χειρουργημένο οφθαλμό επηρεάζεται πολύ λιγότερο από ότι με ένα κλασικό monovision.Με το φακό FlexivueTM τοποθετημένο, ο κερατοειδής γίνεται διπλοεστιακός. Το κεντρικό αναλλοίωτο τμήμα του κερατοειδούς οπού ο φακός είναι τοποθετημένος, προσφέρει ευκρινή μακρινή όραση και το περιφερικό τμήμα παρέχει ευκρινή κοντινή όραση.Κατά τη μακρινή όραση, οι φωτεινές ακτίνες του αντικειμένου που διέρχονται από την κεντρική plano ζώνη του ενθέματος και εκείνες που διέρχονται από την περιοχή του κερατοειδούς εξωτερικά του ενθέματος θα εστιαστούν στον αμφιβληστροειδή, ενώ οι ακτίνες του μακρινού αντικειμένου που διέρχονται από την περιφερική ζώνη του ενθέματος με τη διαθλαστική δύναμη θα εστιαστούν μπροστά από τον αμφιβληστροειδή και η θολή εικόνα που δημιουργούν θα απορριφθεί από το οπτικό σύστημα. Εστιάζοντας σε ένα κοντινό αντικείμενο, η κόρη φυσιολογικά συστέλλεται, οπότε διέρχονται μόνο οι κεντρικές φωτεινές ακτινοβολίες, αφού όμως διαπεράσουν πρώτα το ένθεμα. Οι φωτεινές ακτίνες του κοντινού αντικειμένου που διέρχονται από την κεντρική ζώνη του ενθέματος θα εστιάζονται πίσω από τον αμφιβληστροειδή και η θολή εικόνα που δημιουργούν απορρίπτεται από το οπτικό σύστημα. Οι φωτεινές ακτίνες του κοντινού αντικειμένου που διέρχονται από την περιφερική ζώνη του ενδοκερατοειδικού ενθέματος θα εστιάζονται στον αμφιβληστροειδή. Σαν αποτέλεσμα, μόνο η περιφερική ζώνη του ενθέματος παρέχει κοντινή διόρθωση και επηρεάζει τη μακρινή όραση, ενώ το κεντρικό τμήμα του ενδοκερατοειδικού φακού και η εκτός του ενθέματος ζώνη του κερατοειδούς δεν επηρεάζουν τη μακρινή όραση του ασθενούς.

scholarly journals Efficacy of Burst Mode Torsional Phacoemulsification in Age-Related Cataract

2020 ◽  
Vol 15 (1) ◽  
pp. 94-97
Author(s):  
Md Abdullah Al Masum ◽  
Md Kamrul Hasan Khan ◽  
Zulfikar Hasan ◽  
Natasha Kajmina
Keyword(s):  
Visual Acuity ◽  
Visual Outcome ◽  
Posterior Capsule ◽  
Burst Mode ◽  
Corrected Visual Acuity ◽  
Age Related ◽  
Corneal Wound ◽  
Descemet's Membrane ◽  
Descemet’S Membrane ◽  
Best Corrected Visual Acuity

Introduction: Torsional ultrasound energy and burst mode interrupted energy delivery system are recent advancementsin the technique of phacoemulsification surgery. It has been reported that both these advancementshelpto reduce corneal wound burn and thermal induced endothelial cell loss and thereby helps to achieve excellent early postoperative visual outcome Objectives: To evaluate the efficacy of burst mode torsional phacoemulsification surgery in age-related cataract. Materials and Methods: Prospective observational study of 120 cases that underwent phacoemulsificationcataract surgery in which torsional energy was used in burst mode. Phacoemulsification was performed by “vertical –chop” technique. Intraoperatively corneal wound burn, Descemet’s membrane detachment, posterior capsule ruptureetc.were evaluated. Postoperatively corneal oedema, best corrected visual acuity, cystoid macular oedema were evaluated. Postoperatively eyes were examined at day 1, 1 week, 6 weeks and 3 months. Results: Mean age of the patients was 57.28± 8.20 years. Most of the patients 81(67.5%) had nuclear sclerosis grade-II cataract.Intraoperatively, moderate wound burn occurred in 02(1.6%) eyes, localized Descemet’s membrane detachmentin 03(2.5%) eyes and posterior capsule rupture occurred in 03(2.5%) cases. Postoperatively, moderate and severe corneal edema was found in 06(5.0%) and 04(3.3%) eyes respectively at day 1. At the end of 3 months follow-up, 114(95%) eyes maintained a best corrected visual acuity of ≥ 6/18, of which 109(90.8%) eyes achieved ≥ 6/9. Conclusion: Burst mode torsional phacoemulsfication is a very effective and advanced technique of cataract surgery. Intraoperative complications are very less and visual outcome is excellent. Journal of Armed Forces Medical College Bangladesh Vol.15 (1) 2019: 94-97

scholarly journals Safety and Efficacy of 25G vitrectomy surgery for malignant glaucoma in pseudophakia

2019 ◽  
Author(s):  
fei you
Keyword(s):  
Visual Acuity ◽  
Intraocular Pressure ◽  
Cataract Surgery ◽  
Anterior Chamber ◽  
Safety And Efficacy ◽  
Corrected Visual Acuity ◽  
Malignant Glaucoma ◽  
Intraocular Hemorrhage ◽  
Significant Difference ◽  
Best Corrected Visual Acuity

Abstract Background: malignant glaucoma after cataract surgery is still one of the serious complications, if not handled properly，it may lead to serious consequences. It is notoriously difficult to treat. 25G vitrectomy was performed to evaluate the safety and efficacy for the treatment of malignant glaucoma in pseudophakia. Methods: This is a retrospective, comparative case series study. A total of 20 eyes of 20 patients with malignant glaucoma after phacoemulsification were analyzed retrospectively in The First Affiliated Hospital Of Anhui Medical University from May 2015 to January 2018. All Medical Data including the best corrected visual acuity (BCVA), Change of intraocular pressure (IOP), the length of eye axis, and the depth of anterior chamber were recorded. SPSS 17.0 statistical software was used for analysis .Before surgery, the best corrected visual acuity (BCVA) was 1.8±0.6. The intraocular pressure was between 18-57mmHg, with an average of 35.2±10.4mmHg.The depth of anterior chamber was between 0.9-1.9mm, with an average of 1.3±0.2mm.The length of eye axis was 19.7-22.5mm,with an average of 20.6±0.5mm.All the patients were accomplished with 25G vitrectomy. Besides, anterior chamber inflammatory reaction and other complications were also observed postoperation. Results: The patients were followed up for 6-12 months with an average of 9 months. BCVA at the last follow up improved to 0.8±0.1, and there was significant difference compared to that before operation (P<0.01).IOP was from 12-19mmHg, an average of 16.1±2.5mmHg, there was significant difference compared to that before operation (t=7.6, p<0.01).Only one patient occurred low IOP (6mmHg) after surgery, IOP returned to normal level (14mmHg) after conservative treatment. No serious complications including corneal endothelium decompensation, intraocular lens (IOL) capture, intraocular hemorrhage, endophthalmitis and uncontrolled IOP were observed. Conclusions: 25G minimally invasive vitrectomy can treat malignant glaucoma after cataract surgery safely and effectively

scholarly journals A profile and treatment outcome of seasonal hyper-acute panuveitis

1970 ◽  
Vol 2 (1) ◽  
pp. 35-38 ◽  
Author(s):  
E Shrestha
Keyword(s):  
Visual Acuity ◽  
Medical Treatment ◽  
Visual Outcome ◽  
P Value ◽  
Fisher Exact Test ◽  
Mean Values ◽  
Exact Test ◽  
Pediatric Age Group ◽  
Significant Difference ◽  
The Mean

Introduction: Seasonal hyper-acute panuveitis (SHAPU) is a sight-threatening disease and its management is challenging. Objective: To study the profile and evaluate the visual outcome of the patients of clinicallydiagnosed cases of SHAPU after treatment. Subjects and methods: A retrospective interventional hospital-based study was carried out involving 21 subjects with clinically-diagnosed SHAPU. The data were retrieved from the record section of the hospital and analyzed. The variables studied were demographic pattern, clinical condition, duration of presentation and visual acuity before and after the treatment. Statistics: The data were analyzed using Epi Info version 2000. Percentage prevalence, mean values with standard deviation, relative risk, 95% CI and p value were calculated. P value of < 0.05 was considered to be significant. Results: Among the 21 cases, the numbers of male and female were 11 (52.4 %) and 10 (46.7 %) respectively. A comparative analysis of gender in children and adults did not show any significant difference (RR=0.47, 95% CI = 0.22 - 1.01, Fisher exact test: p = 0.14). The mean for all ages was 7 ± 12.68 years, while the mean age in pediatric cases was 4.5 ± 3.91 years. Thirteen (61.9%) cases occurred in children below fifteen years. Fifteen (71.4 %) cases reported during September and October. Presenting visual acuity of all cases was less than 3/60. All of them received medical treatment. By the end of the 4th week, seven (33.3 %) patients regained vision to 6/18. Conclusion: SHAPU is more prevalent in pediatric age group. It is equally prevalent among males and females. The visual acuity can improve with early medical treatment. Keywords: SHAPU; panuveitis; steroid; phthisis bulbi DOI: 10.3126/nepjoph.v2i1.3702 Nep J Oph 2010;2(1) 35-38

scholarly journals The Effect of Pterygium Surgery on Corneal Topography

QJM ◽  
2020 ◽  
Vol 113 (Supplement_1) ◽  
Author(s):  
N M Welson ◽  
M M M Samy ◽  
A A Gaafar ◽  
T A Badran
Keyword(s):  
Visual Acuity ◽  
Surgical Treatment ◽  
Corneal Topography ◽  
Surgical Removal ◽  
Significant Difference ◽  
Uncorrected Visual Acuity ◽  
Pterygium Surgery ◽  
The Mean ◽  
Pterygium Excision ◽  
Topographic Astigmatism

Abstract Objective To evaluate the effect of pterygium surgery on corneal topography by comparing wave front analysis before and one month after the surgical treatment. Methodology Fifty eyes of forty-one patients were included in this study. Twenty five male and sixteen female patients seeking pterygium surgery were recruited from the Ophthalmology Department Outpatient Clinic in Sohag Teaching Hospital during the period from July 2017 to May 2018. All eyes underwent pterygium excision with conjunctival autograft. Results In this study we found a highly statistically significant improvement in the mean uncorrected visual acuity from 0.44±0.21SD preoperatively to 0.62±0.18SD postoperatively (p &lt; 0.001) and a highly statistically significant difference in the mean logMAR visual acuity as it was decreased from 0.43±0.28 SD preoperatively to 0.34±0.23 SD postoperatively (p &lt; 0.001). Also, there was a highly statistically significant improvement in mean of manifest refractive astigmatism from -4.08±3.28 SD preoperatively to -1.46±1.40 SD postoperatively (p &lt; 0.001). We also found a highly statistically significant improvement in the mean cycloplegic astigmatism from -4.00±3.01 SD preoperatively to -1.39±1.33 SD postoperatively (p &lt; 0.001) and also there was a highly statistically significant improvement in the mean topographic astigmatism from -5.17±4.08 SD preoperatively to -2.20±2.31 SD postoperatively (p &lt; 0.001). We also found a highly statistically significant improvement in the mean of ISV (Index of Surface Variance) from 76.22±36.86 SD preoperatively to 33.56±15.02 SD post operatively (p &lt; 0.001) and also there was a highly statistically significant improvement in the mean IHD (Index of Height Decentration) from 0.042±0.027SD pre-operatively to 0.023±0.036 SD post operatively. Conclusion There was a highly statistically significant difference in the mean logMAR visual acuity and a highly statistically significant improvement in the mean uncorrected visual acuity. A highly statistically significant improvement in both refractive and topographic astigmatism after one month of the surgery was noted also. Here were also a highly statistically significant improvement in ISV and IHD that indicate improvement after pterygium removal. Recommendations Patient with pterygium that inducing astigmatism will benefit from surgical removal of the pterygium.

Examining the effect and safety of orthokeratology in controlling the development of myopia: Based on fluorosilicone acrylic breathable material

2020 ◽  
Vol 10 (5) ◽  
pp. 740-747
Author(s):  
Yanxia Song ◽  
Haixia Tian ◽  
Suling Yang ◽  
Feifan Du ◽  
Huihui Sun ◽  
...  
Keyword(s):  
Visual Acuity ◽  
Intraocular Pressure ◽  
Axial Length ◽  
Corneal Endothelium ◽  
Clinical Effect ◽  
Naked Eye ◽  
Corrected Visual Acuity ◽  
Significant Difference ◽  
Before And After

We aimed to evaluate the clinical effect and safety of orthokeratology in controlling the development of myopia. We assessed the changes in visual acuity, diopter change, axial length, corneal endothelium count, intraocular pressure, and corneal Q value in 30 adolescents with 60 years of wearing an orthokeratology lens. In this study, no significant difference was observed between the naked eye vision and corrected visual acuity before wearing the lens (t = –0.23, P = 0.59); furthermore, no significant difference was observed in diopter, axial length, corneal endothelium count, and intraocular pressure 1 year before and after wearing the lens (t = 1.24, P = 0.45; t = –0.89, P = 0.25; t = –0.43, P = 0.57; t = 1.43, P = 0.61); by contrast, there was a significant difference in the corneal Q value before and after wearing the lens (t = –8.37, P = 0.001). These results suggest that the fluorosilicone acrylic breathable material corneal orthopedic lens is safe and effective in controlling myopia, and has little effect on the physiology of the eye.

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