Open Access Short communication

Open Access Short communication

Keratoconus Plus (KC-Plus): A New Term Proposed by an Egyptian Research Team for Use in Relation to Keratoconus, with Coexisting Cataract

Mohammed Iqbal, Ahmed Elmassry, Ahmed Tawfik, Mervat Elshabrawy Elgharieb, Khaled Nagy, Waleed Abou Samra

Ophthalmology Research: An International Journal, Page 1-8
DOI: 10.9734/OR/2018/40049

Purpose: To establish a consensus in the Egyptian literature on the management of keratoconus (KC) and cataract in the same eye.

Methods: An Egyptian research team, including 42 KC experts, met to develop a protocol for the management of KC in Egypt. In three scientific meetings, the Egyptian Protocol for Keratoconus (EPK) group focused on the diagnosis and treatment of KC in Egypt. In panels and debates, they discussed procedures to treat coexisting cataract and KC in the same eye. Many experts in the EPK group agreed on the term KC-Plus to refer to KC and cataract in the same eye. The experts then participated in Delphi-style rounds of questionnaires to define this new term.

Results: Thirty-two (76.2%) of the 42 participants who participated in the Delphi-style rounds of questionnaires agreed on the definition of KC-Plus as a term that described the coexistence of cataract and KC in the one eye. The participants agreed on the need for a fourth face-to-face meeting of the EPK group.

Conclusion: Cataract and KC in one eye represent a visual, refractive and corneal dilemma. A solidly designed protocol is needed to guide ophthalmologists in the diagnosis and treatment of patients with coexisting cataract and KC in the same eye. The protocol should address various issues under debate, such as whether the cataract or KC should be treated first. It should also address patient selection, intraocular lens (IOL) selection and optimum biometry formulae. A new term (i.e. KC-Plus) is needed to describe the existence of KC and cataract in the same eye.

 

Open Access Original Research Article

Clinical Outcomes of Tetraflex Accommodative Intraocular Lens Implantation 2 Years after Cataract Surgery for Presbyopia

Hatice Nur Tarakcioglu, Ulviye Yigit, Ismail Umut Onur, Abdullah Ozkaya

Ophthalmology Research: An International Journal, Page 1-7
DOI: 10.9734/OR/2018/39991

Aims: To evaluate the 24 month visual and accommodative outcomes of Tetraflex accommodative intraocular lens (AIOL).

Study Design: Retrospective, interventional case series.

Place and Duration of the Study: Bakirkoy Training and Research Hospital, Istanbul, Turkey, between December 2011 and April 2012.

Material and Methods: The patients who underwent cataract surgery with phacoemulsification, and in whom Tetraflex AIOL was implanted and who completed the follow-up period of 24 months were included. Uncorrected (UCDVA) and best corrected distance visual acuities (BCDVA) were evaluated pre- and post-operatively, and uncorrected (UCNVA), distance-corrected (DCNVA) and best corrected near visual acuities (BCNVA) and spherical equivalent (SE) refraction errors were evaluated post-operatively only. Accommodative amplitude was measured with a subjective and objective method and at post-operative month 3, 6 and 24.

Results: A total of 16 eyes of 14 patients were included. The mean baseline, month 3, 6 and 24 UCDVA of the patients was 0.95 ± 0.47, 0.11 ± 0.14, 0.14 ± 0.16 and 0.14 ± 0.17 LogMAR, respectively. The mean month 3, 6 and 24 UCNVA was 0.49 ± 0.16, 0.54 ± 0.15 and 0.51 ± 0.16 LogMAR, respectively. The mean amplitude of accommodation by subjective defocus method was -1.06 ± 0.30, -1.14 ± 0.27 and -1.13 ± 0.27 D and the average pilocarpine-induced IOL mobility (∆ ACD) was 0.34 ± 0.16 mm, 0.37 ± 0.16 mm and 0.36 ± 0.15 mm at postoperative month 3, 6 and 24, respectively.

Conclusion: The Tetraflex AIOL implantation seemed a safe and effective treatment option for presbyopia.

 

Open Access Original Research Article

Use of Ultrasound and Anterior Segment Optical Coherence Tomography to Compare Central Corneal Thickness Values in Patients with Open Angle Glaucoma

Panagiotis Tsikripis, Fryni Riga, Maria Stamatiou

Ophthalmology Research: An International Journal, Page 1-7
DOI: 10.9734/OR/2018/40561

Purpose: To compare central corneal Thickness (CCT) using ultrasound (US) pachymetry and Anterior Segment Optical Coherence Tomography (AS-OCT), in patients with open-angle glaucoma (OAG).

Methods: Ninety patients above 50 years with healthy corneas were prospectively included for repeated measurements of central corneal Thickness (CCT), using ultrasound pachymetry (US) and Anterior Segment Optical Coherence Tomography (AS-OCT), during the same visit. The readings were averaged and compared by paired t-test. Both eyes of each participant were measured for our study.

Results: Ultrasound pachymetry showed significantly higher CCT values. The CCT measured by AS-OCT and ultrasound was 525 ± 32.1 μm and 533 ± 38 μm respectively for the right eye. For the left eye the values were 523 ± 31.2 μm and 532 ± 33.1 μm respectively for the AS-OCT and US. The difference in CCT measurement by AS-OCT and ultrasound was statistically significant (P<0.001) in both eyes with mean standard deviation of ultrasound CCT being 16.14 µm greater than the mean of AS-OCT CCT for the right and 15.12 μm for the left eye. A strong correlation was found (r >0.80) between the CCT measurement techniques. The Anova test didn’t reveal serious differences neither with AS-OCT, nor with US pachymetry.

Conclusion: Central Cornea Thickness measurement by ultrasound pachymetry gives higher values compared to AS-OCT measurement in patients with OAG. This in clinical practice means, that they cannot be interchangeably used and both must be considered as methods of examination.

 

Open Access Original Research Article

Effect of Ocular Deviation on Contrast Sensitivity

Partha Haradhan Chowdhury, Brinda Haren Shah

Ophthalmology Research: An International Journal, Page 1-4
DOI: 10.9734/OR/2018/40597

Purpose: The present study aims to correlate contrast sensitivity in the presence of ocular deviation.

Methods: A pilot, cross-sectional, observational study was performed at tertiary eye care centers. Subjects with an Ocular deviation between 10 to 40 prism diopters, Corrected distance Visual Acuity should be greater than 6/18 and Age should be between 10 to 40 years of age were included in the study. Contrast sensitivity was recorded with Pelli Robson Contrast Sensitivity chart.

Results: 30 subjects were included in the study. All the patients were included with informed consent. Out of that, 16 subjects were in the age group of 11-20 years, 12 subjects were in the age group of 21-30 years and 2 subjects were in the age group of 31-40 years. 60% subjects were Female, and 40% subjects were Male. Mean scores of visual parameters were taken. Contrast sensitivity was deteriorated to 1.695 in the presence of ocular deviation.

Conclusions: In cases of ocular deviation, contrast sensitivity deteriorates significantly.