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    5-fluorouracil as chemoadjuvant for primary pterygium surgery: Preliminary report
    (Lippincott Williams & Wilkins, 2003) Akarsu, C; Taner, P; Ergin, A
    Purpose. To investigate the safety and efficacy of intraoperative application of 5-fluorouracil as an adjuvant in primary pterygium surgery and to evaluate the effect of postoperative subconjunctival 5-fluorouracil injections on the recurrent pterygium. Methods. Of 25 consecutive white patients, 28 eyes with primary pterygium underwent pterygium excision with intraoperative application of 5-fluorouracil (25 mg/mL for 3 minutes). The superior and inferior conjunctiva was approximated to cover the scleral bed within I mm of the limbus. Recurrence of pterygium was defined as postoperative fibrovascular growth more than 1 mm onto the cornea. Eyes with recurrence less than 2 mm were treated with subconjunctival 5-fluorouracil injections. Results. After a mean follow-up of 14.1 +/- 3.9 months (mean +/- standard deviation), 7 recurrences (25%) were observed. All recurrences were detected within 12 months. In 4 of 7 recurrences, the fibrovascular growths were less than 2 mm. We, therefore, performed subconjunctival 5-fluorouracil injections. In 3 (75%) of 4 recurrences, the fibrovascular growths became atrophic. No serious complications were observed during and after the surgery. However, superficial punctate keratitis,:Pain, and hyperemia were detected in all patients in the early postoperative period. As a result, of 28 eyes, 4 (14%) had unacceptable cosmetic results and growing recurrences. Conclusions. This study suggests that intraoperative applications of 5-fluorouracil is both efficient and safe in the treatment of primary pterygium. Additionally, postoperative subconjunctival 5-fluorouracil injections may prevent the progression of fibrovascular tissue.
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    The effects of hormone replacement therapy on ocular surface and tear function tests in postmenopausal women
    (Karger, 2004) Taner, P; Akarsu, C; Atasoy, P; Bayram, M; Ergin, A
    Purpose: To prospectively investigate the impact of various hormone replacement therapies (HRT) on ocular surface and tear function tests. Methods: A total of 70 women in the postmenopausal period were enrolled in the study. The groups consisted of 16 women who were not on HRT ( group 1), 29 women who were on HRT with tibolone ( group 2) and 25 women who received estradiol plus medroxyprogesterone acetate treatment ( group 3). All patients underwent tear film break-up time (TF-BUT), Schirmer's test and conjunctiva cytology at the time of enrollment and at 6 months' follow-up. Results: Patients in group 2 showed improved Schirmer's test and TFBUT results (p < 0.001); however, no significant changes occurred in group 1 and group 3 patients (p > 0.05). Conjunctival cytology scores did not differ at the time of enrollment and at 6 months' follow-up in all groups. Conclusions: This is the first comparative clinical study on the effects of tibolone and estradiol plus medroxyprogesterone acetate on ocular surface and tear function tests. HRT with tibolone seems to improve tear function tests in postmenopausal women. Copyright (C) 2004 S. Karger AG, Basel.
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    Short-term effect of latanoprost on ocular circulation in ocular hypertension
    (Blackwell Publishing Asia, 2004) Akarsu, C; Bilgili, YK; Taner, P; Unal, B; Ergin, A
    Purpose: To determine the short-term effects of latanoprost on retrobulbar circulation in ocular hypertension. Methods: Forty-six eyes of 23 consecutive bilateral ocular hypertensive patients with an intraocular pressure (IOP) of greater than 22 mmHg were evaluated in a prospective controlled study. All subjects received a single drop of latanoprost 0.005% in one eye and placebo in the fellow control eye. Systemic circulatory parameters, intraocular pressure, blood flow velocities, and resistance indices of the ophthalmic, short posterior ciliary and central retinal arteries were measured using colour Doppler imaging at baseline and 2 h and 8 h after dosing, Results: Latanoprost lowered IOP significantly after 2 h and 8 h (P < 0.01). The mean IOP reduction was 6.7 mmHg 8 h after dosing. At baseline, there were no statistically significant differences in any retrobulbar vessels of eyes that received a single drop of latanoprost when compared with the eyes that received placebo (P > 0.05). Comparisons with baseline and latanoprost conditions revealed that latanoprost did not alter the blood flow velocities and resistance indices in the ophthalmic (P > 0.05), posterior ciliary (P > 0.05) and central retinal (P > 0.05) arteries 2 h and 8 h after dosing. The systolic and diastolic blood pressures (P = 0.74, P = 0.29, respectively) and pulse rate (P = 0.68) remained unchanged over the 8-h period. Conclusions: This study found that a single drop of latanoprost significantly reduces intraocular pressure 8 h after dosing. However, it does not have any short-term effects on the retrobulbar haemodynamics in ocular hypertensive eyes.