穿透性角膜移植术治疗内眼术后大泡性角膜病变

目的：评价穿透性角膜移植术治疗内眼术后大泡性角膜病变的临床疗效。方法：我们对因内眼术后发生大泡性角膜病变的11例病人进行回顾性研究，其中9例行穿透性角膜移植术，1例行穿透性角膜移植术联合白内障囊外摘除、后房型人工晶体植入术，1例行带环形板层巩膜瓣的全角膜移植术。观察术后视力及植片情况。结果：随访4～36个月，平均16．6个月，眼部刺激症状均缓解，术后视力提高10眼，视力无改变1眼；术后9例角膜植片透明，2例再次行穿透性角膜移植术联合小梁切除术。结论：穿透性角膜移植术是治疗大泡性角膜病变的有效方法，不但缓解症状且能不同程度提高视力。     

穿透性角膜移植治疗人工晶状体植入后大泡性角膜病18例

目的：评价穿透性角膜移植治疗人工晶状体植入后大泡性角膜病的方法和疗效。方法：人工晶状体植入后大泡性角膜病18例行穿透性角膜移植，其中9例单纯行穿透性角膜移植，8例行穿透性角膜移植联合术，1例取出前房植入普通后房型人工晶状体后行穿透性角膜移植，随访时间为4mo～2a。结果：术后随访13例植片透明，3例植片半透明，2例植片混浊。16例矫正视力在0．04～0．6，疼痛症状全部解除。结论：穿透性角膜移植联合术是目前治疗人工晶状体植入后大泡性角膜病较合理而有效的方法。     

穿透性角膜移植术治疗人工晶体大泡性角膜病变

本文对１０例穿透性角膜移植术（ＰＫＰ）治疗人工晶体大泡性角膜病变的效果进行回顾性研究。全部病例均为外院手术所致。原白内障性质：老年性白内障３例，外伤性白内障６例，先天性白内障１例。单纯行ＰＫＰ者１例，ＰＫＰ联合人工晶体位置调整者２例，ＰＫＰ同时取出人工晶体并行前部玻切术等治疗者７例。术后随访２－２４月，全部病例疼痛等症状解除，植片均保持透明，７例术后矫正视力达０．０２－０．３。本文对手术方法选择及角膜供体植片大小等进行了讨论。     

穿透性角膜移植治疗人工晶状体植入术后大泡性角膜病变的临床观察

目的 评价穿透性角膜移植术治疗人工晶状体植入术后大泡性角膜病变临床疗效,探讨术中对原人工晶状体的处理。方法 对12例(12只眼)人工晶状体植入术后大泡性角膜病变施行穿透性角膜移植术或穿透性角膜移植术联合手术,观察术后角膜植片及视力变化。结果 随访6～16个月,平均11．2个月,术后临床症状明显缓解或消失,植片保持透明,视力较术前均有提高,其中矫正视力0．02以上11例(0．2以上4例);术后继发性青光眼1例,内皮型排斥反应1例。结论 穿透性角膜移植术是治疗人工晶状体植入术后大泡性角膜病变的一种理想手术方式,不仅能消除刺激症状且能增进视力。术中如何处理人工晶状体应视眼部具体情况。     

穿透性角膜移植治疗人工晶体植入术后大泡性角膜病变的临床观察

目的探讨穿透性角膜移植术治疗人工晶体植入术后大泡性角膜病变临床疗效。方法对21例（21眼）人工晶体植入术后大泡性角膜病变施行穿透性角膜移植术或穿透角膜移植联合手术，观察术后视力及植片情况。结果随访6～18个月，平均11．6个月，术后临床症状明显缓解或消失，视力较术前均有提高，其中矫正视力0．02以上17例（0．2以上7例）；术后继发性青光眼2例，内皮型排斥反应1例。结论穿透性角膜移植术是治疗人工晶体植入术后大泡性角膜病变的一种理想手术方式，不但缓解症状且能不同程度提高视力。     

人工晶体眼大泡性角膜病变的穿透性角膜移植

目的:研究人工晶体眼大泡性角膜病变行穿透性角膜移植的临床效果和保留或取出原人工晶体的适应证。方法:应用穿透性角膜移植治疗人工晶体植入术后大泡性角膜病变。结果:13例(13眼),术中保留原人工晶体11眼,取出原人工晶体2眼。术后随访平均16个月。随访期间角膜移植片全部透明,术后绝大部分病例视力获得提高,其中视力矫正达到0.2以上有5眼。结论:穿透性角膜移植是治疗人工晶体植入术后大泡性角膜病变有效方法。只要人工晶体位于囊袋内,位置正常,术中应保留原人工晶体,手术安全,术后视力恢复良好。眼科学报1998;14:227～228。     

大泡性角膜病变的穿透角膜移植治疗及其超微结构

采用穿透性角膜移植术治疗３１例大泡性角膜病变，观察０．５─６年。３０例症状完全消除，２６例植片透明，４例植片混浊，１例恶化。经１２例透明植片内皮细胞检查，细胞密度大于１０４０±１４０个／ｍｍ￣２，达到稳定代偿。同时用透射电子显微镜观察了受眼病变角膜的病理变化。     

人工晶体取出的原因分析

回顾性分析２５例人工晶体取出的原因。其中前房型４例，后房型２１例。前房型和后房型人工晶体从植入至取出的平均间隔时间分别为２３．５和７．１个月。前房型取出的原因为ＵＧＨ综合征３例和人工晶体大泡性角膜病变１例；后房型取出的原因有人工晶体脱位或半脱位１２例，人工晶体大泡性角膜病变４例，人工晶体视网膜脱离３例和眼内炎２例。手术方法：直接取出或合并三切口闭台式玻璃体切除，穿透性角膜移植，玻璃体视网膜手术，前段玻璃体切除和瞳孔膜切除。术后绝大多数眼的视力提高或保持不变。     

穿透性角膜移植治疗大泡性角膜病变

穿透性角膜移植术治疗大泡性角膜病变２１例，随访期最长２年，最短２个月，除２例半透是有外，其余１９例均获得透明愈合，视力较术前有所提高，最佳为０．４，最低为１尺指数。对因人工晶体植入并发角膜大泡者，如患者尚有光觉，同时眼压在正常范围，行穿透性角膜移植可望恢复产视力且又解除病人的症状，在处理人工晶体时，以对眼组织少干扰为原则，可以整个取出，亦可部分取出，即将襻与晶体切断，取出晶体，留１个或２个襻在眼内     

人工晶状体眼并发大泡性角膜病变及视网膜脱离时应用临时人工角膜进行眼前后节联合手术

目的探讨在人工晶状体眼合并大泡性角膜病变及视网膜脱离病例中应用临时人工角膜行玻璃体切割联合穿透性角膜移植的临床价值。方法对6例(6眼)人工晶状体眼合并大泡性角膜病变及视网膜脱离患者行临时人工角膜下玻璃体切割联合穿透性角膜移植术。结果6例患者术后视网膜均复位良好，5例角膜植片透明，1例患者视力达0．1．2例患者手术中取出人工晶状体。结论该手术是一种安全、有效的治疗手段，对保留人工晶状体眼合并大泡性角膜病变及视网膜脱离患者的眼球及部分视力起到了积极的作用。     

Penetrating keratoplasty for pseudophakic bullous keratopathy associated with semiflexible, closed-loop anterior chamber intraocular lenses

We performed penetrating keratoplasty on 32 eyes that developed pseudophakic bullous keratopathy associated with closed-loop anterior chamber intraocular lenses. All lenses were exchanged at the time of keratoplasty. Seventeen patients received anterior chamber intraocular lenses and 15 patients had a posterior chamber lens sutured to the iris or sclera. Postoperatively, 13 of 32 eyes (41%) achieved a visual acuity of 20/100 or better, and 27 of 32 eyes (84%) had a clear graft. A high incidence of cystoid macular edema (eight cases), and graft rejection (seven cases) resulted in marked visual loss.     

A prospective study on the implantation of anterior chamber intraocular lenses during keratoplasty for pseudophakic and aphakic bullous keratopathy

Between April 1986 and April 1989, the authors conducted a prospective study of the use of open-loop anterior chamber intraocular lenses (AC IOLs) in patients undergoing penetrating keratoplasty for pseudophakic bullous keratopathy or monocular aphakic bullous keratopathy. All patients underwent the same operation--a penetrating keratoplasty combined with insertion of an open-loop AC IOL. Pseudophakic patients had an IOL exchange at the time of surgery. Thirty-six patients have been followed an average of 15 months. Thirty-two (89%) of the grafts are clear. Preoperatively, 100% of eyes had visual acuity less than 20/200. Postoperatively, 11 eyes (31%) have visual acuity better than 20/40 and 23 eyes (64%) have visual acuity better than 20/100. The most common causes for visual acuity less than 20/200 were cystoid macular edema, glaucoma, and immunologic graft failure. Using open-loop AC IOLs in patients with pseudophakic or aphakic bullous keratopathy can give good postoperative results and functional vision.     

Clinical indications for and procedures associated with penetrating keratoplasty, 1983-1988

We reviewed the preoperative clinical indications and associated surgical procedures for 2,299 penetrating keratoplasties performed at our institution from 1983 through 1988. Pseudophakic bullous keratopathy was the most common indication overall, accounting for 526 cases (23%). A marked increase was noted in the incidence of pseudophakic bullous keratopathy as an indication for penetrating keratoplasty beginning in 1985. The association of anterior chamber intraocular lenses in eyes with pseudophakic bullous keratopathy undergoing penetrating keratoplasty increased from 19 of 43 cases (44%) in 1983 to 79 of 108 cases (73%) in 1988. The incidence of intraocular lens exchange at the time of penetrating keratoplasty in cases of pseudophakic bullous keratopathy increased from six of 43 (14%) in 1983 to 63 of 108 (58%) in 1988. Other major indications for penetrating keratoplasty included Fuchs' dystrophy (375 cases, 16%), keratoconus (348 cases, 15%), aphakic bullous keratopathy (331 cases, 14%), and regraft (233 cases, 10%). Cataract extraction, with or without intraocular lens implantation, was combined with penetrating keratoplasty in 397 of 1,532 phakic eyes (26%). The incidence of triple procedure (penetrating keratoplasty, cataract extraction, and intraocular lens implantation) increased from 27 of 248 phakic eyes (11%) in 1983 to 68 of 258 phakic eyes (26%) in 1988.     

Pseudophakic bullous keratopathy

We reviewed the records of all patients with pseudophakic bullous keratopathy (271 eyes, 251 patients) seen during a six-month period to determine predisposing factors, associated problems, current management, and visual outcome. Pseudophakic bullous keratopathy was associated most frequently with anterior chamber intraocular lenses in general (155 of 271), and with Leiske style lenses in particular (100 of 271). It was associated with a visual acuity of 20/200 or less in 206 eyes and a visual acuity of counting fingers or less in 129 of the eyes at the initial examination. Penetrating keratoplasties had been performed in 189 of the eyes. After penetrating keratoplasty, 108 of 189 of the eyes had a visual acuity of 20/200 or less (mean follow-up, 15 months). Visual acuity improved with longer follow-up, and among patients with a minimum follow-up of two years, 23 of 36 eyes had a visual acuity of 20/100 or better. Most grafts were clear (145 of 189). Pseudophakic bullous keratopathy was associated with marked visual loss, which was permanent despite clear grafts in 29 of 92 eyes followed-up for one year or longer.     

Intraocular lens removal during penetrating keratoplasty for pseudophakic bullous keratopathy

Pseudophakic bullous keratopathy is now the most common reason for penetrating keratoplasty. In previous reports, the type of intraocular lens (IOL) most frequently encountered in these eyes was the iris plane IOL. The authors reviewed 27 cases of IOL removal during penetrating keratoplasty. Lenses were removed if they were dislocated or associated with iritis, recurrent hyphema, glaucoma, or persistent cystoid macular edema. The IOL encountered most often was the anterior chamber lens (in 22 eyes); closed thin loop, semiflexible or flexible anterior chamber lenses accounted for 19 of these. Iris plane lenses were removed from five eyes. No posterior chamber lenses were removed. Clear grafts were obtained in 24 of 27 cases (89%); visual acuity improved or remained the same in 24 cases, to 20/60 in 11 cases. The most common causes of poor postoperative vision were retinal disease (6/27 cases) and glaucoma (6/27 cases). The association between anterior chamber lenses and pseudophakic bullous keratopathy is probably the result of both the increase in use of these lenses and the documented propensity of the closed loop semiflexible anterior chamber lenses to cause complications.     

Visual results after keratoplasty in patients with posterior chamber intraocular lenses

We performed penetrating keratoplasty in 20 consecutive patients who had posterior chamber intraocular lenses and who developed pseudophakic bullous keratopathy. All patients received 8.0-mm grafts placed in 7.5-mm recipient beds. None of the intraocular lenses were removed. Final visual acuity was 20/40 or better in eight (40%) and 20/80 or better in 15 (75%) of the patients. Senile macular degeneration (one case), corneal graft rejection (two cases), and wound infection (one case) contributed to poor visual results in the remaining patients.     

Progression of visual acuity after penetrating keratoplasty

A consecutive series of 721 eyes was followed for visual acuity changes after keratoplasty in four groups: keratoconus, Fuchs' dystrophy, pseudophakic bullous keratopathy with retained intraocular lenses, and aphakic/pseudophakic bullous keratopathy with secondary implants during keratoplasty. Follow-up ranged from 12 to 84 months. Keratoconus eyes showed the quickest recovery of visual acuity: by 12 months, 91% attained a best-corrected vision of 20/40, and the mean lines of visual acuity for the group plateaued thereafter. The other three groups showed continuing improvement in vision through 24 months. From 3 months through 3 years after keratoplasty, the keratoconus and Fuchs' groups consistently showed better visual acuity levels than either the retained or the secondary implant groups (P less than 0.0001). Reporting changes in visual acuity over time offers multiple advantages compared with providing best-attained or last-recorded visual acuities after keratoplasty.