Biomedical subjects

Haluk Ertürk

Publications and source records attributed to Haluk Ertürk.

6 recordsLinked to original sources

PubMed2003

Tear function and ocular surface changes in keratoconus.

PURPOSE: To describe the ocular surface disorder in patients with keratoconus. DESIGN: A prospective, case-controlled study. PARTICIPANTS: Seventy-five eyes of 38 patients with keratoconus seen at Uludag University School of Medicine, Department of Ophthalmology, from March 2000 through April 2001, and 80 eyes of 40 normal control subjects were studied. INTERVENTION: The subjects underwent routine ophthalmic examinations, corneal sensitivity measurements, Schirmer test, tear film breakup time (BUT), fluorescein and rose bengal staining of the ocular surface, and conjunctival impression cytology. MAIN OUTCOME MEASURES: Patients and control subjects were compared for corneal sensitivity, tear function, ocular surface staining parameters, goblet cell density, and squamous metaplasia grade. The relation of these parameters to the severity of keratoconus progression was also investigated. RESULTS: The mean corneal sensitivity was significantly lower in keratoconus patients compared with control subjects (P < 0.001). The BUT values were also significantly lower in the keratoconus group. Patients with keratoconus had significantly higher fluorescein and rose bengal staining scores (P < 0.001). Corneal sensitivity and tear function changes seemed to get worse with advanced stages of keratoconus. Impression cytology showed goblet cell loss and conjunctival squamous metaplasia, both of which again related to the extent of progression of keratoconus. CONCLUSIONS: The ocular surface disease in keratoconus is characterized by disorder of tear quality, squamous metaplasia, and goblet cell loss, all of which seem to relate to the extent of keratoconus progression.

Adolescent↗

PubMed2002

Changes in tear function and the ocular surface after topical olopatadine treatment for allergic conjunctivitis: an open-label study.

BACKGROUND: Olopatadine hydrochloride 0.1% eye drops represent a new class of anti-allergic agent with combined antihistaminic and mast cell-stabilizing properties. OBJECTIVE: The purpose of this study was to describe alterations in tear function and the ocular surface in patients with allergic conjunctivitis and to analyze the effect of topical olopatadine treatment on corneal sensitivity, tear function, and impression cytology variables. METHODS: This was a single-center, 3-visit, prospective, open-label study conducted in patients with allergic conjunctivitis. Patients received 1 drop of topical olopatadine hydrochloride 0.1% BID for 3 weeks. At each visit, patients and healthy control subjects underwent routine ophthalmic examinations and measurements of corneal sensitivity and tear function (Schirmer test of tear quantity, tear film break-up time [BUT], fluorescein staining of the cornea). All control subjects and a subgroup of patients also underwent conjunctival impression cytology for assessment of squamous metaplasia and goblet cell density. The outcomes of interest were changes in corneal sensitivity, tear function, and impression cytology variables after 3 weeks of treatment with olopatadine eye drops, both in patients with allergic conjunctivitis and between patients and controls. RESULTS: At enrollment, the study included 46 eyes of 23 patients (9 men, 14 women; age range, 20-42 years) with allergic conjunctivitis; results were calculated based on the 21 patients who completed the study. The control group consisted of 70 eyes of 35 healthy subjects (13 men, 22 women; age range, 22-39 years). Before treatment, 64.3% of the eyes of patients with allergic conjunctivitis had a fluorescein staining score of >1 point, whereas after treatment, 14.3% had a score of >1 point (P < 0.001). Patients' mean (+/- SD) corneal sensitivity improved to 55.0 +/- 2.5 mm from the pretreatment value of 42.5 +/- 2.5 mm (P < 0.001). Mean BUT values before and after treatment were 8.1 +/- 3.5 and 14.0 +/- 7.0 seconds, respectively (P < 0.001). Before treatment, patients' mean squamous metaplasia grade was 2.5 +/- 0.5; at the end of treatment, it had decreased to 1.0 +/- 0.5 (P < 0.001). The mean pretreatment goblet cell density of 545 +/- 85 cells/mm2 improved to 1,090 +/- 100 cells/mm2 after treatment (P < 0.001). CONCLUSION: In the patient population studied, the disorder of tear function, squamous metaplasia, and loss of ocular surface goblet cells associated with allergic conjunctivitis improved with topical olopatadine treatment.

Adult↗

PubMed2002

Primary repair and intraocular lens implantation after perforating eye injury.

PURPOSE: To evaluate the clinical outcome after primary treatment of lens injuries with corneal or corneoscleral trauma. METHODS: Ten eyes of 10 patients were retrospectively evaluated. There were no foreign bodies in any eye. After primary repair, an anterior chamber maintainer (ACM) was introduced through the inferotemporal corneal quadrant. Sodium hyaluronate 1.4% (Healon GV(R)) was injected, and the anterior capsule was stained with trypan blue 0.1% vital stain (Vision Blue) under the viscoelastic substance. After a capsulorhexis was created, the lens material was aspirated. The nucleus was delivered from the scleral tunnel, which was opened from the superior/superotemporal corneal quadrant. A conventional 21.0 diopter poly(methyl methacrylate) intraocular lens (IOL) with a 5.5 mm optic and overall diameter of 12.5 mm (Dr. Schmidth(R), Hannan Kibbutz) was implanted through the scleral tunnel. The scleral tunnel was not sutured, and the corneal entry sites were closed with stromal hydration. RESULTS: The final best spectacle-corrected visual acuity (BSCVA) was better than 20/100 in all patients, and 6 patients had a BSCVA of 20/20. The IOL was in the capsular bag in all patients at the last follow-up. The mean follow-up was 12.3 months (range 7 to 25 months). The main visually limiting factors were corneal scar, irregular astigmatism, and traumatic maculopathy. CONCLUSIONS: Primary IOL implantation in carefully selected patients with penetrating corneoscleral lens injury may yield visually rewarding results. The use of a vital stain to increase the visibility of the injured anterior capsule and of a closed scleral tunnel system with an ACM increased the surgical safety.

Adolescent↗

PubMed2002

Treatment of nasolacrimal duct obstruction with polyurethane stent placement: long-term results.

OBJECTIVE: The purpose of this study was to evaluate the long-term efficacy of polyurethane stent placement in adults with nasolacrimal duct obstruction. SUBJECTS AND METHODS: Polyurethane stents were placed under fluoroscopic guidance in 52 eyes of 49 patients (mean age, 43 years) with severe epiphora due to idiopathic nasolacrimal duct obstruction. The obstruction was complete in 44 eyes and partial in eight. Clinical success was defined as complete resolution of or great improvement in the symptoms of epiphora and the patency of the lacrimal system to irrigation. Mean follow-up was 23 months (range, 14-44 months). RESULTS: Stent placement was technically successful in 50 eyes (96%). The mean fluoroscopy screening time was 2.2 min (range, 0.2-5.8 min). Two patients were lost to follow-up. Clinical success was obtained in 33 (69%) of 48 eyes. Lacrimal symptoms developed in 23 (70%) of these 33 eyes at least once during the follow-up, but these patients responded well to topical drug treatment and lacrimal irrigation. External dacryocystorhinostomy was performed in 13 eyes after failure of the stents. At surgery, lacrimal sacs were shrunken, hyperemic, and fragile in all eyes, making it difficult to anastomose with nasal mucosa. Histologic examination showed granulation tissue and chronic inflammation of the sac epithelium. CONCLUSION: The success rate of the nasolacrimal stent decreases as follow-up lengthens. After stent treatment, lacrimal symptoms frequently develop, even if the stent remains patent, and require multiple office visits and therapy. The polyurethane stent may induce a chronic inflammatory response in the lacrimal sac, which can interfere with subsequent dacryocystorhinostomy.

Adult↗

PubMedDate not supplied

Capsular block syndrome in a case with excessive cortical remnants.

Ten days after cataract extraction with phacoemulsification and in-the-bag acrylic intraocular lens implantation, capsular block syndrome developed in the right eye of a 62-year-old man. Aspiration of the swollen cortical remnants resulted in resolution of the capsular block.

Capsulorhexis↗

PubMedDate not supplied

Free iris cyst in the anterior chamber.

A 50-year-old man had a free iris cyst in the anterior chamber that was treated by puncturing using an Nd:YAG laser. Following laser treatment, the cyst wall settled in the anterior chamber angle and no complications were encountered during 4 months of follow-up.

Anterior Chamber↗