Effect of Cycloplegia on Keratometric and Biometric Parameters in Keratoconus

Purpose. To obtain information about effect of cycloplegia on keratometry and biometry in keratoconus. Methods. 48 keratoconus (Group 1) and 52 healthy subjects (Group 2) were included in the study. We measured the flat meridian of the anterior corneal surface (K1), steep meridian of the anterior corneal surface (K2), lens thickness (LT), anterior chamber depth (ACD), and axial length (AL) using the Lenstar LS 900 before and after cycloplegia. Results. The median K1 in Group 1 was 45.64 D before and 45.42 D after cycloplegia, and the difference was statistically significant (P<0.05). The median K2 in Group 1 was 50.96 D before and 50.17 D after cycloplegia, and the difference was significant (P<0.05). The median K1 and K2 in Group 2 were 42.84 and 44.49 D, respectively, before cycloplegia, and 42.84 and 44.56 D after cycloplegia, and the differences were not statistically significant (all P>0.05). There were significant differences in SE, LT, ACD, and RLP between before and after cycloplegia in either Group 1 (all P<0.05) or Group 2 (all P<0.05). There were not statistically significant differences in AL between before cycloplegia and after cycloplegia in either Group 1 (P=0.533) or group 2 (P=0.529). Conclusions. Flattened corneal curvature and increase in ACD following cycloplegia in keratoconus patients were detected

Evaluation of Anterior Segment’s Structures in Tilted Disc Syndrome

Purpose. To evaluate anterior segment’s structures by Pentacam in patients with tilted disc syndrome (TDS). Methods. Group 1 included forty-six eyes of forty-six patients who have the TDS. Group 2 including forty-six eyes of forty-six cases was the control group which was equal to the study group in age, gender, and refraction. A complete ophthalmic examination was performed in both groups. All cases were evaluated by Pentacam. The axial length (AL) of eyes was measured by ultrasound. Quantitative data obtained from these measurements were compared between two groups. Results. There was no statistically significant difference for age, gender, axial length, and spherical equivalent measurements between two groups (p=0.625, p=0.830, p=0.234, and p=0.850). There was a statistically significant difference for central corneal thickness (CCT), corneal volume (CV), anterior chamber angle (ACA), and pupil size measurements between two groups (p=0.001, p=0.0001, p=0.003, and p=0.001). Also, there was no statistically significant difference for anterior chamber depth (ACD), anterior chamber volume (ACV), and lens thickness (LT) measurements between two groups (p=0.130, p=0.910, and p=0.057). Conclusion. We determined that CCT was thinner, CV was less, and ACA was narrower in patients with TDS. There are some changes in the anterior segment of the eyes with tilted disc

Effect of Cycloplegia on Keratometric and Biometric Parameters in Keratoconus

properly cited. Purpose. To obtain information about effect of cycloplegia on keratometry and biometry in keratoconus. Methods. 48 keratoconus (Group 1) and 52 healthy subjects (Group 2) were included in the study. We measured the flat meridian of the anterior corneal surface (K1), steep meridian of the anterior corneal surface (K2), lens thickness (LT), anterior chamber depth (ACD), and axial length (AL) using the Lenstar LS 900 before and after cycloplegia. Results. The median K1 in Group 1 was 45.64 D before and 45.42 D after cycloplegia, and the difference was statistically significant ( &lt; 0.05). The median K2 in Group 1 was 50.96 D before and 50.17 D after cycloplegia, and the difference was significant ( &lt; 0.05). The median K1 and K2 in Group 2 were 42.84 and 44.49 D, respectively, before cycloplegia, and 42.84 and 44.56 D after cycloplegia, and the differences were not statistically significant (all &gt; 0.05). There were significant differences in SE, LT, ACD, and RLP between before and after cycloplegia in either Group 1 (all &lt; 0.05) or Group 2 (all &lt; 0.05). There were not statistically significant differences in AL between before cycloplegia and after cycloplegia in either Group 1 ( = 0.533) or group 2 ( = 0.529). Conclusions. Flattened corneal curvature and increase in ACD following cycloplegia in keratoconus patients were detected

Results of Cataract Surgery in the Very Elderly Population

Purpose: The aim of this study was to retrospectively evaluate the effect of cataract surgery on visual acuity (VA) and daily living activities in participants aged over 80 years. Methods: For eighty-three eyes from eighty three eligible patients aged 80 or above who had undergone cataract surgery between 2000 and 2005, preoperative and postoperative best-corrected visual acuity (BCVA), satisfaction score for daily living activities, surgical complications, and retinal pathologies affecting vision were recorded from the patient's file. Results: The mean age of the patients was 86.80±5.24 years (range, 80-98). VA improved in the operated eye for patients aged 80 to 89 and for those over 90 years. Postoperative VA of 0.5 or better was more frequently observed in those aged 80 to 89 than in those aged over 90 years (90.6% and 73.4%, respectively). Mean postoperative scores for the daily living activities scale were significantly better in both groups as compared to preoperative levels, and were better in the 80 to 89-year age group than for those older than 90. Intraoperative posterior capsule perforation occurred in two participants, cystoid macular edema in one, iridodialysis in one and postoperative refractory stromal edema occurred in one case. Conclusions: Our results showed that better VA levels for daily living activities can be obtained after cataract surgery in elderly patients aged over 80 years, thereby suggesting that cataract removal is effective removal in this population

Partial Modification of the Yamada Technique in Myopic Strabismus Fixus Treatment: Case Presentation

A 41-year-old female presented with a history of gradually increasing esotropia (ET) for 23 years. The best corrected visual acuity was 20/63 in both eyes. Refraction values were -18.50 (-1.00*55) in the right eye and -13.25 (-3.00*105) in the left eye. The axial length was measured as 29.35 mm for the right eye and 28.36 mm for the left eye. The patient's ocular motility was very restricted in the left eye with values of (-4) for abduction from the midline, (-3) for elevation and (-4) for elevation in adduction. The patient's left eye had 80 prism diopters (PD) ET and 16 PD hypotropia with the prism cover test. During surgery, an 8 mm recession was first performed to the left eye medial rectus (MR). The SR and LR muscles were then divided into two for 15 mm from their insertions. The temporal half of the SR muscle and the superior half of the LR muscle were sutured together with 6/0 spatulated suture 7 mm away from the limbus at the exact midpoint of the two muscles, at the 1:30 o'clock position (Yamada procedure). A posterior fixation suture was placed on the sclera 7 mm behind the combined end of the two muscles (14 mm from the limbus) with 5/0 Ethibond suture (our modification of the Yamada procedure). Post-operative 1st day, 1st month and 6th month follow-ups were performed. On the 6th month follow-up, there was a marked decrease in the restriction of the patient&#8217;s left eye movements compared to the pre-operative period and there was 20 PD ET and 8 PD hypotropia in the primary position. Left eye movements were (+4) on abduction, (-2) on elevation and (-2) on elevation at adduction. We determined that we had achieved partial success in such cases with our partial modification of the Yamada procedure. [Med-Science 2015; 4(3.000): 2564-9

Treatment and Follow up of Pseudomonas Endophtalmitis due to Contact Lens Use

The use of contact lenses is the most common cause of bacterial keratitis. Pseudomonas aurogenoza is the most common factor. We aimed to present diagnosis, treatment and follow up a 21 yeas old female patient with endophtalmitis secondary to multi-drug resistance, a stubborn Pseudomonas aeruginosa keratitis due to the inappropriate use of soft contact lenses. [Med-Science 2013; 2(4.000): 921-27

The influence of corneal collagen cross-linking on anterior chamber in keratoconus

Aims: This study aimed to evaluate the effect of the corneal changes following corneal cross-linking (CXL) on the anterior chamber in keratoconus patients. Materials and Methods: Forty-five eyes of 32 patients who had been diagnosed with progressive keratoconus and had undergone CXL were included in this retrospective study. The thinnest corneal thickness of the progressive keratoconus patients included in the study was >400 μ. The preoperative (T0), postoperative 6th month (T1), and postoperative 1st year (T2) anterior chamber volume (ACV), anterior chamber angle (ACA), and anterior chamber depth (ACD) scheimpflug imaging values were obtained for each eye. Results: The mean T0 ACV value was 182.79 ± 36.68 mmwhile the T1 value was 201.25 ± 41.73 mm3 and the T2 value was 208.40 ± 42.69 mm3 with a statistically significant difference between the periods (P = 0.001). The mean T0 ACA value was 38.64° ±5.85°, increasing to 41.45° ±4.83° in the T1 and 42.10° ± 4.84° in the T2. The T0 value was significantly lower than the post-CXL values (P = 0.003). The mean ACD value was 3.73 ± 0.29 mm at the T0 and 3.82 ± 0.38 mm at the T1 and 3.84 ± 0.36 mm at the T2. The pre-CXL values were significantly lower than the post-CXL values (P = 0.001). Conclusions: The improvement of corneal parameters by CXL in keratoconus patients can have a positive effect on anterior chamber parameters as well. This effect becomes marked at the postoperative first 6-month evaluation

Traumatic superior oblique tendon rupture: case presentation

We present a 47-year-old male with superior oblique (SO) tendon rupture that developed due to a broken metal hook while installing snow chains on his car. The patient presented to our clinic as an emergency for the right eye trauma and pain. The examination revealed a small cut in the right upper eyelid and an edematous tendinous structure that extended downwards through the conjunctival cut at the upper fornix. This structure was thought to be the SO tendon. Emergency exploration and SO tendon repair were performed under general anesthesia. The SO tendon was sutured to its own insertion region 5 mm in width and 5 mm behind a point 3 mm temporal to the superior rectus muscle. The conjunctiva was also repaired. There was 6 PD (prism diopter) right hypertropia and vertical diplopia on postoperative follow-up. The diplopia symptoms improved in the postoperative 3rd month. The patient had no diplopia at the 6th month follow-up but 4 PD hypertropia continued. [Med-Science 2016; 5(4.000): 1008-10