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Ординатура / Офтальмология / Английские материалы / Step by Step Laser in Ophthalmology_Bhattacharya_2009

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228 LASER IN OPHTHALMOLOGY

Retinal and choroidal hemorrhage is caused by the acoustic and shock waves generated by optical breakdown very close to retinal surface. Usually choroidal and retinal hemorrhages clear within four weeks. If during laser procedure choroidal hemorrhage is detected, pressure on the globe by the laser contact lens will stop it spontaneously.

2.Retinal hole formation and retinal detachment.

3.Cataract formation (in phakic eyes): The suggested laser focus behind the posterior capsule to avoid this complication is 4 mm.

4.Implant damage (in Pseudophakic eyes).

5.Vitreous hemorrhage: Posterior vitreolysis of an untreated vascularised membrane or band causes vitreous hemorrhage.

6.Vitritis.

BIBLIOGRAPHY

1.Berglin L, et al. A new technique of treating rhegmatogenous retinal detachment using the Q-switched Nd:YAG laser.Ophthalmic Surg 1987;18:890-92.

2.Bhattacharyya B. Clinical Applications:YAG Laser (Ophthalmology).New Delhi:Jaypee Brothers Medical Publishers (P)Ltd,2005:26-7,106-10.

3.Bonner RF, Meyers SM, Gaasterland DE. Threshold for retinal damage associated with the use of a highpower neodymium YAG lasers in the vitreous. Am J Ophthalmol 1983;96: 153-59.

4.Frankhauser F, Kwasniewska S, Van der Zypen E. Vitreolysis with the Q-switched laser. Arch Ophthalmol 1985;103:1166.

5.Frankhauser F, Kwasniewska S. Neodymium: Yttrium- Aluminium-Garnet laser. In Francis A. L’esperance, Jr. (Ed.) Ophthalmic Lasers. St. Louis : The CV Mosby Co. 1989; 858-66.

Nd: YAG POSTERIOR SEGMENT VITREOLYSIS 229

6.Frankhauser F. The Q-switched laser: Principles and clinical results. In Trokel S (Ed.). YAG laser Ophthalmic Microsurgery. Norwalk, CT: Appleton-Century-Crofts, 1983,

pp128-31.

7.Gibbons WB, Allen RG. Retinal damage from suprathreshold Q-switched laser exposure. Health Phys 1978; 35:461-69.

8.Jampol LM, Goldberg MF, Jednock N. Retinal damage from

aQ-switched YAG laser. Am J Ophthalmol 1983;96:326-29.

9.Puliafito CA, Wasson PJ, Steinert RF, et al. Nd-YAG laser surgery on experimental vitreous membranes. Arch Ophthalmol 1984;102:843-47.

10.Tassignon MJ, et al. Vitreo-retinal membranes treated with the Q-switched Nd: YAG laser. Lasers Ophthalmol 1987;1:205.

INDEX

A

Angiomatosis retinae 68 complications 72 contraindications 68 indications 68 postlaser advice 71 technique 69

Anterior hyaloidectomy 166 general steps 166 indications 166 technique 167

Anterior segment applications 207 corneal neovascularization-

laser application 212 complications 214 indications 213 technique 213

drainage of conjunctival cyst 210

indication 210 technique 210

goniophotocoagulation 212 indication 212 technique 212

laser suture lysis 210 complications 212 indications 211 technique 211

reopening of blocked filtering site/bleb 210

indication 210 technique 210

repositioning of PCIOL 209 technique 209

retained anterior capsular remnants 208

indication 208 techniques 208

Anterior segment vitreolysis 217 general steps 219 indications 218

postlaser advice 221 prelaser examination protocol

218 technique 219

Argon laser 107, 123, 143 iridotomy 123

complications 127 contraindications 124 follow-up schedule 127 general steps 125 indications 124 postlaser advice 127 technique 126

trabeculoplasty 107 complications 112 contraindications 109 general steps 109 indications 108 mode of action 108 postlaser advice 112 technique 110

pupilloplasty 143 complications 146 contraindications 144 general steps 144 indications 144 postlaser advice 146 technique 145

232 LASER IN OPHTHALMOLOGY

C

 

 

 

 

 

 

 

contraindications

76

 

 

Central serous choriodopathy

94

general steps

77

 

 

 

indications

 

76

 

 

 

complications

96

 

 

 

 

 

 

 

 

 

 

 

 

 

 

postlaser advice

78

 

 

contraindication

94

 

 

 

 

 

 

 

 

technique

77

 

 

 

 

general steps

95

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

indications

94

 

 

 

 

 

N

 

 

 

 

 

 

technique

95

 

 

 

 

 

 

Nd: YAG 129, 149, 153, 159,

Cyclophotocoagulation

167

 

 

173, 195, 199, 203

complications

169

 

 

 

 

 

 

coreoplasty

153

 

 

 

contraindications

 

164

 

 

 

 

 

 

 

 

complications

157

 

contact method

169

 

 

 

 

 

follow-up schedule

157

non-contact method

169

general steps

154

 

indications

168

 

 

 

 

 

 

 

 

 

 

 

indications

154

 

 

I

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

postoperative advice

157

Infiltration anesthesia

16

 

 

prelaser examination

 

 

schedule 154

 

 

L

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

technique

155

 

 

 

 

 

 

 

 

 

 

 

 

 

 

Laser parameters

12

 

 

 

 

corticolysis

199

 

 

 

Laser peripheral iridoplasty

137

general steps

200

 

complications

140

 

 

 

postlaser advice

201

contraindications

 

138

 

 

technique

200

 

 

 

general steps

138

 

 

 

 

iridotomy

129

 

 

 

indications

138

 

 

 

 

 

complications

134

 

postlaser advice

140

 

 

contraindications

130

technique

139

 

 

 

 

 

 

follow-up schedule

134

Laser tissue interactions

4

 

 

general steps

130

 

focusing of laser beam

9

 

indications

130

 

 

gradation of photocoagu-

 

management

134

 

lation lesions

9

 

 

postlaser advice

134

influence of opacities in

 

 

technique

131

 

 

 

ocular media

8

 

 

membranectomy

203

 

lasers in photocoagulation

6

complications

205

 

diode laser

8

 

 

 

 

 

general steps

204

 

freq-doubled Nd: YAG

indications

204

205

laser

7

 

 

 

 

 

 

postlaser advice

 

 

 

 

 

 

technique

205

 

 

 

krypton red laser

7

 

 

 

 

 

 

 

persistent hyperplastic

 

photocoagulation

 

4

 

 

 

 

 

 

 

 

pupillary membranec-

M

 

 

 

 

 

 

 

 

 

 

 

 

 

 

tomy

159

 

 

 

Malignant melanoma

76

 

 

complications

163

 

complications

78

 

 

 

 

 

general steps

161

 

 

 

 

 

 

 

 

 

 

 

 

INDEX

233

indications

160

 

 

follow-up

62

 

 

 

 

 

 

 

postoperative advice

163

general steps

 

60

 

 

 

 

 

prelaser examination

indications

60

 

 

 

 

 

 

schedule 160

 

 

postlaser advice

 

61

 

 

 

 

photomydriasis

149

 

 

technique

61

 

 

 

 

 

 

 

 

complications

152

 

Photoablation

13

 

 

 

 

 

 

contraindications

150

Photocoagulation

35, 82, 85

 

general steps

150

 

in BRVO 82

 

 

 

 

 

 

 

 

indications

150

 

 

contraindication

82

 

 

 

postlaser advice

152

indication

 

82

 

 

 

 

 

technique

151

 

 

technique

 

83

 

 

 

 

 

 

posterior capsulotomy

173

timing of laser

82

 

 

 

complications

190

 

in CRVO 85

 

 

 

 

 

 

 

 

contraindications

177

follow-up schedule

86

 

follow-up schedule

190

indication

 

85

 

 

 

 

 

general steps

178

 

technique

 

86

 

 

 

 

 

 

indications

174

 

 

timing of laser

85

 

 

 

postoperative advice

188

in diabetic maculopathy 35

technique

182

 

 

complications

44

 

 

 

 

timing of capsulotomy 177

general steps

 

37

 

 

 

 

sweeping

195

 

 

 

 

indications

37

 

 

 

 

contraindication

196

postlaser advice

43

 

 

 

etiology 196

 

 

 

postlaser follow-up

43

 

general steps

196

 

technique

 

38

 

 

 

 

 

 

postlaser advice

197

Photodisruption

 

14

 

 

 

 

 

technique

167

 

 

Photodynamic therapy

45

 

 

 

P

 

 

 

 

 

complications

51

 

 

 

 

 

 

 

 

 

 

contraindications

46

 

 

 

 

Panretinal photocoagulation in

 

 

 

 

ocular

46

 

 

 

 

 

 

 

 

diabetic retinopathy 21

 

 

 

 

 

 

 

 

systemic

47

 

 

 

 

 

 

complications

30

 

 

 

 

 

 

 

 

 

 

dose calculation

 

47

 

 

 

 

contraindications

23

 

 

 

 

 

 

 

 

 

general steps

 

48

 

 

 

 

 

general steps

23

 

 

 

 

 

 

 

 

 

 

 

 

indications

46

 

 

 

 

 

 

indications

22

 

 

 

 

 

 

 

 

 

 

 

 

infusion of the verteporfin

49

postlaser advice

29

 

 

 

 

mode of action

47

 

 

 

 

postlaser follow-up

30

 

 

 

 

 

 

postlaser advice

 

50

 

 

 

 

technique

26

 

 

 

 

 

 

 

 

 

 

 

 

 

preparation of the dye

47

 

Pascal photocoagulation 16

 

technique

49

 

 

 

 

 

 

 

 

Peripheral retinal degenerations 60

 

 

 

 

 

 

 

 

Photoradiation

14

 

 

 

 

 

 

complications

61

 

 

Photovaporization

13

 

 

 

 

contraindications

60

 

 

 

 

 

 

 

 

Post photocoagulation advice

13

 

 

 

 

 

 

234 LASER IN OPHTHALMOLOGY

Posterior segment vitreolysis 223 complications 227 contraindication 224

criteria for selection of site 225 general steps 226

indications 224 postlaser follow-up 72 prelaser examination

schedule 224

R

Retinal breaks 62 complications 65 contraindications 63 general steps 63 indications 63 postlaser advice 64 postlaser follow-up 66

Retinal vasculitis 90 complications 93 contraindication 91 follow-up schedule 93 general steps 91 indications 90 postlaser advice 93 technique 92

timing of laser 91 Retinoblastoma 72

complications 75 contraindications 73 general steps 73 indications 73 postlaser follow-up 76 technique 74

Retinopathy of prematurity 97 complications 101 follow-up schedule 100 general steps 99 indications 98

retrolental fibroplasia 97 technique 99

timing of laser 99

S

Selective laser trabeculoplasty 115 complications 121 contraindications 116 general steps 117

indications 116 mode of action 116 postlaser advice 120 technique 119

T

Transpupillary thermotherapy 53 contraindication 54 follow-up schedule 57 general steps 55

indications 54 mode of action 54 postlaser advice 57 technique 55 timing of laser 55

X

Xanthophyll pigment 6