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Year : 1991  |  Volume : 39  |  Issue : 3  |  Page : 102-104

Keratoplasty and cataract extraction

Cornea Service, Dr. R.P. Centre for Ophthalmic Sciences, A.I.I.M.S., New Delhi, India

Correspondence Address:
Anita Panda
Cornea Service, Dr. R.P. Centre for Ophthalmic Sciences, A.I.I.M.S., New Delhi
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Source of Support: None, Conflict of Interest: None

PMID: 1841879

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Fifty eyes were evaluated following penetrating keratoplasty and cataract extraction. Twenty five of them had intracapsular lens extraction while the remaining 25 had intercapsular method of extracapsular lens extraction. Both operative and post operative complications were more in group I. Visual outcome and graft clarity were also better in eyes of group II. Combined keratoplasty and intercapsular method of extracapsular lens extraction was recommended in eyes having both corneal and lenticular pathology.

How to cite this article:
Panda A, Kumar T S. Keratoplasty and cataract extraction. Indian J Ophthalmol 1991;39:102-4

How to cite this URL:
Panda A, Kumar T S. Keratoplasty and cataract extraction. Indian J Ophthalmol [serial online] 1991 [cited 2023 Sep 27];39:102-4. Available from: https://journals.lww.com/ijo/pages/default.aspx/text.asp?1991/39/3/102/24461

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  Introduction Top

In coexistence of corneal opacity and cataract it is yet to be decided whether keratoplasty along with lens extraction or keratoplasty alone at first sitting followed by lens removal will be preferred. In the literature on this while there are many advocates of keratoplasty and cataract extraction [1][2][3][4] other surgeons continue to favour separate procedures [5],[6]. The reported incidence of graft failure varies considerably with either procedure ranging from 22-69% for the combined procedure [1],[7],[8] and from 19-61% when lens extraction is done in a subsequent operation [9],[10].

The problems of extracapsular lens extraction in a combined procedure like keratoplasty and cataract extraction are much more enhanced than with simple lens extraction.

Extracapsular lens extraction for simple cataract is the modern surgery of the day, both for its reduced incidence of visually disabling complications like vitreous loss, corneal decompensation, cystoid macular oedema and for its necessity in posterior chamber intraocular lens implantation.

The purpose of this communication is to compare the final anatomical and functional success in these two groups of patients where keratoplasty was com­bined with either extracapsular or intracapsular lens extraction.

  Material and methods Top

The material consists of penetrating keratoplasty with intracapsular cataract extraction done for corneal and lenticular pathology in twenty five eyes and compared with the same number of eyes having similar pathol­ogy where penetrating keratoplasty was performed along with extracapsular lens extraction. All the opera­tions were performed by one surgeon. Only uncom­plicated operative cases were selected for this study. The sizes of the graft varied from 7.1 mm to 8.1 mm. All the donor eyes were evaluated by specular microscopy. The cell counts of eyes used for both groups were identical.

The comparison between the two groups of cases was made on the basis of post-operative complica­tions, graft clarity and visual acuity. Post-operatively all the cases had systemic antibiotics, corticosteroid and antiglaucoma therapy.

Lens extraction was performed by cryo. For extracap­sular lens extraction intercapsular method of nucleus delivery and aspiration was carried out.

  Results Top

The age group of the patients varied from 26-65 years. The aetiology of the patients were as shown in [Table - 1]. The various operative, early and late post operative complications are enumerated in [Table - 2][Table - 3][Table - 4]. [Table - 1][Table - 4] highlight the graft clarity and final visual acuity.

  Discussion Top

Cataract extraction in a clear graft has been reported to result in clouding of the graft in 19-61% of cases [9][10][11][12][13][14]. However Stark and Maumenee reported 100% results following this procedure [6].

It has also been commented that despite the use of a scleral incision and meticulous care to avoid endothelial damage during lens extraction 20% of previously clear grafts have lost some of their transparency [2].

With the advance of modern microsurgical technique and the better scanning of donor material by specular microscopy the results of penetrating keratoplasty improved. Failure of a corneal graft following penetrat­ing keratoplasty is usually the result of endothelial damage. This can result from various causes such as post operative vitreous touch to the back of cornea, severe iridocyclitis and secondary glaucoma.

Vitreous must be out of the anterior chamber and away from the wound. (2) Avoidance of post operative pupillary block which is again mainly due to vitreous bulge. These two factors are more likely to develop following intracapsular lens extraction than extracap­sular lens extraction.

Between the two methods of lens extraction with keratoplasty Kaufman in 1972 had shown better results following intracapsular lens extraction method. Aspiration of cortical material in an open chamber specially in combined surgery is more difficult than simple extraction by limbal section. Aspiration by making a closed chamber by placement of donor tissue is hazardous to the donor endothelium, the same cannot be practised in presence of the opaque host cornea. Therefore, the procedure of intercapsular method of lens nucleus delivery and cortex aspiration was carried out in all the cases. More operative vitreous disturbance in intracapsular lens extractions leading to more post operative complications made us follow the intercapsular method of lens extraction.

The final outcome in the term of graft clarity of three plus or more was seen in 60% and 80% eyes of group I and II respectively. Similarly, the visual outcome 6/18 or more was seen in 69% of group I eyes and 64% improving to 72% following YAG laser capsulotomy in group II eyes. Considering our comparative data at the present time a combined penetrating keratoplasty and intercapsular lens ex­traction will be the method of choice if the patient requires both keratoplasty and cataract surgery ir­respective of combined double or triple procedure.

  References Top

Katzin H.M., Melatzer J.E. Combined surgery for corneal transplantation and cataract extraction. Amer Jour. Ophth. 1966, 62:556, 560.  Back to cited text no. 1
Casey TA. The combined operation of cataract and corneal graft Ophth. Soc. U.K. 1969, 89:659-668.  Back to cited text no. 2
Herbert E. Kaufman Combined keratoplasty and cataract extraction Amer. J. Ophth. 1974. 77:824-829.  Back to cited text no. 3
Jaun J. Arentsen, Peter R. Laibson Penetrating Keratoplasty & Cataract, AMA Arch. Ophthalmol. 1978: 96:75-76.  Back to cited text no. 4
J.A. Capells, Herbert E. Kaufman Prognosis of keratoplasty in phakic and aphakic patients Trans Ophth. Otolaryngology 1972: 76:1275-1283.  Back to cited text no. 5
Walter J. Stark, A. Edward Maumenee Cataract extraction after successful penetratingkeratoplasty. Amer J. Ophth. 1973:75:751-754.  Back to cited text no. 6
Boruchoff S.A. Combined graft and lens extraction. The second report on cataract surgery. Miami, Miami Education Press 1971, Page 281.  Back to cited text no. 7
Stark W.J., Paton D. Maumenee A.E., Michelson PE. The result of 102 penetrating keratoplasties using 10-0 monofilament nylon suture. Ophth. Surg. 1972: 3.11.16.  Back to cited text no. 8
Modre I. E Jt ' Aronson S.B. The corneal graft. A multiple variable analysis of the penetrating keratoplasty Amer. J. Ophth. 1971 72:205-212.  Back to cited text no. 9
Fine M. Therapeutic keratoplasty in Fuch's dystrophy. Amer. J. Ophth. 1964: 57:371-378.  Back to cited text no. 10
Paton R.T, Swartz G. Keratoplasty in Fuch's dystrophy Arch. Ophth. 1959 : 61:366.  Back to cited text no. 11
Hughes W.F The treatment of corneal dystrophies by keratoplasty. Amer. Jour. Ophth. 1960: 56:1100.  Back to cited text no. 12
Mohan M, Panda A, Chawdhary S. Penetrating Keratoplasty in Primary Fuch's dystrophy. Proceedings of Ind. J. Ophth. 1984: 32:394-398.  Back to cited text no. 13
Lemp M.A., Prister R.R., Dohiman C.H. The effect of intraocular surgery on clear cornea graft. Amer. Jour. Ophth. 1970: 70:719-721.  Back to cited text no. 14


  [Table - 1], [Table - 2], [Table - 3], [Table - 4], [Table - 5], [Table - 6]


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