AIM:To evaluate the possible effects of phacoemulsification cataract surgery on ocular hemodynamics.·METHODS:In this prospective study,intraocular pressure(IOP),pulsatile ocular blood flow(POBF),and ocular pulse ...AIM:To evaluate the possible effects of phacoemulsification cataract surgery on ocular hemodynamics.·METHODS:In this prospective study,intraocular pressure(IOP),pulsatile ocular blood flow(POBF),and ocular pulse amplitude(OPA) were measured pre-operatively(baseline) and at 1 week and 3 weeks postoperation in 52 eyes of 26 patients(mean age 63.15±10.25 years) scheduled for unilateral phacoemulsification cataract surgery with intraocular lens implantation.In all of the eyes,a blood flow analyzer(Paradigm DICON;Paradigm Medical Industries Inc.;USA) was used to obtain measurements of IOP,POBF,and OPA.The data obtained from operated eyes were compared statistically to untreated fellow phakic eyes of the patients.·RESULTS:For operated eyes,the mean baseline IOP,POBF,and OPA values were 15.9±4.64mmHg,17.41±4.84μL/s,and 2.91 ±1.12mmHg,respectively.The IOP,POBF,and OPA values were 17.19 ±4.34mmHg,17.56 ±6.46μL/s,and3.12 ±1.1mmHg,respectively,in the nonoperated control eyes.Statistically significant differences from baseline measurements were not observed 1 week and 3 weeks postoperation for the operated or nonoperated eyes.There were also no statistically significant differences in any measurements between the operated and nonoperated eyes in all the examination periods(P 】0.05for all).·CONCLUSION:Uncomplicated phacoemulsification surgery does not affect ocular hemodynamics in normotensive eyes with cataracts.展开更多
AIM: To compare the effectiveness of brimonidine/timolol fixed combination(BTFC) and dorzolamide/timolol fixed combination(DTFC) in the management of short-term intraocular pressure(IOP) increase after phacoemulsifica...AIM: To compare the effectiveness of brimonidine/timolol fixed combination(BTFC) and dorzolamide/timolol fixed combination(DTFC) in the management of short-term intraocular pressure(IOP) increase after phacoemulsification surgery.·METHODS: Eighty eyes of 80 patients undergoing phacoemulsification and intraocular lens(IOL)implantation were randomly assigned into three groups.Group 1 consisted of 28 eyes and represented the control group. Group 2 consisted of 25 eyes undergoing phacoemulsification surgery and BTFC was instilled at the end of surgery. Group 3 consisted of 27 eyes undergoing phacoemulsification surgery and DTFC was instilled at the end of surgery. IOP was measured preoperatively and 6, 24 h and 1wk postoperatively.·RESULTS: There was no statistically significant difference in preoperative baseline IOP among the three groups(P =0.84). However, IOP was significantly lower in groups 2 and 3 compared to the control group(P <0.05 for all comparisons) at all postoperative visits. There was no significant difference between groups 2 and 3 at any visit. Eight eyes(28.6%) in the control group, two(8%) in Group 2 and one(3.7%) in Group 3 had IOP >25 mm Hg at 6h after surgery(P =0.008). However, IOP decreased and was >25 mm Hg in only one eye in each group at24 h after surgery.·CONCLUSION: BTFC and DTFC have similar effects in reducing increases in IOP after phacoemulsificationsurgery and can both be recommended for preventing IOP spikes after such surgery.展开更多
文摘AIM:To evaluate the possible effects of phacoemulsification cataract surgery on ocular hemodynamics.·METHODS:In this prospective study,intraocular pressure(IOP),pulsatile ocular blood flow(POBF),and ocular pulse amplitude(OPA) were measured pre-operatively(baseline) and at 1 week and 3 weeks postoperation in 52 eyes of 26 patients(mean age 63.15±10.25 years) scheduled for unilateral phacoemulsification cataract surgery with intraocular lens implantation.In all of the eyes,a blood flow analyzer(Paradigm DICON;Paradigm Medical Industries Inc.;USA) was used to obtain measurements of IOP,POBF,and OPA.The data obtained from operated eyes were compared statistically to untreated fellow phakic eyes of the patients.·RESULTS:For operated eyes,the mean baseline IOP,POBF,and OPA values were 15.9±4.64mmHg,17.41±4.84μL/s,and 2.91 ±1.12mmHg,respectively.The IOP,POBF,and OPA values were 17.19 ±4.34mmHg,17.56 ±6.46μL/s,and3.12 ±1.1mmHg,respectively,in the nonoperated control eyes.Statistically significant differences from baseline measurements were not observed 1 week and 3 weeks postoperation for the operated or nonoperated eyes.There were also no statistically significant differences in any measurements between the operated and nonoperated eyes in all the examination periods(P 】0.05for all).·CONCLUSION:Uncomplicated phacoemulsification surgery does not affect ocular hemodynamics in normotensive eyes with cataracts.
文摘AIM: To compare the effectiveness of brimonidine/timolol fixed combination(BTFC) and dorzolamide/timolol fixed combination(DTFC) in the management of short-term intraocular pressure(IOP) increase after phacoemulsification surgery.·METHODS: Eighty eyes of 80 patients undergoing phacoemulsification and intraocular lens(IOL)implantation were randomly assigned into three groups.Group 1 consisted of 28 eyes and represented the control group. Group 2 consisted of 25 eyes undergoing phacoemulsification surgery and BTFC was instilled at the end of surgery. Group 3 consisted of 27 eyes undergoing phacoemulsification surgery and DTFC was instilled at the end of surgery. IOP was measured preoperatively and 6, 24 h and 1wk postoperatively.·RESULTS: There was no statistically significant difference in preoperative baseline IOP among the three groups(P =0.84). However, IOP was significantly lower in groups 2 and 3 compared to the control group(P <0.05 for all comparisons) at all postoperative visits. There was no significant difference between groups 2 and 3 at any visit. Eight eyes(28.6%) in the control group, two(8%) in Group 2 and one(3.7%) in Group 3 had IOP >25 mm Hg at 6h after surgery(P =0.008). However, IOP decreased and was >25 mm Hg in only one eye in each group at24 h after surgery.·CONCLUSION: BTFC and DTFC have similar effects in reducing increases in IOP after phacoemulsificationsurgery and can both be recommended for preventing IOP spikes after such surgery.
