Outcomes of macular hole surgery with short-duration positioning in highly myopic eyes: a case-control study

COMPARISON OF AIR VERSUS PERFLUOROPROPANE INTRAOCULAR TAMPONADE COMBINED WITH VITRECTOMY FOR THE TREATMENT OF MACULAR HOLE IN HIGH MYOPIA

PURPOSE

To compare the efficacy of air and perfluoropropane (C3F8) with pars plana vitrectomy (PPV) in highly myopic macular holes (HMMHs) and explore the factors related to surgical prognosis.

METHODS

A retrospective comparison of a consecutive series of HMMHs undergone vitrectomy and internal limiting membrane peeling. According to tamponade type, they were divided into air group and C3F8 group, which were further divided into subgroups based on hole diameter or axial length (AXL). Anatomical and functional outcomes were compared between tamponades. Related factors of initial closure rate and postoperative best-corrected visual acuity (BCVA) were analyzed by logistic regression.

RESULTS

The baseline characteristics in air group (n = 63) and C3F8 group (n = 37) were similar except the age of air was older ( P = 0.019). The mean follow-up period was 17.16 ± 17.97 months. After surgery, the initial closure rate of air group was 85.7% and that of C3F8 group was 83.7% ( P = 0.780). And the initial closure rate showed no difference between tamponades in the same subgroup classified by hole diameter or AXL (all P > 0.05). Postoperative BCVA improved significantly in both groups ( P < 0.001), but no difference between them ( P = 0.793). Logistic regression showed that age, minimum linear diameter, and AXL were risk factors of initial closure rate, and preoperative BCVA was the only factor associated with postoperative BCVA (all P < 0.05).

CONCLUSION

With a long-term follow-up of HMMH, we found air had a similar tamponade effect anatomically and functionally compared with C3F8. Air may also be a good choice for patients with HMMH.

Posterior scleral reinforcement for the treatment of myopic traction maculopathy

Background

This study aimed to investigate the clinical effectiveness of posterior scleral reinforcement(PSR) for the treatment of myopic traction maculopathy (MTM).

Methods

This was a prospective study of 32 eyes from 20 patients with MTM treated with PSR using genipin-cross-linked donor sclera. The length of the scleral strip used for the surgery was designed to be 1.5-times the axial length of the eye, whereas its width was 0.4-times the axial length of the eye. The optical coherence tomography images, spherical equivalent of refractive error, axial length, best corrected visual acuity, electroretinogram findings, and intraocular pressure of the patients were assessed postoperatively.

Results

The mean duration of follow-up was 17.80 ± 8.74 months. The differences between the spherical equivalent of refractive error, best corrected visual acuity, axial length, and electroretinogram findings recorded preoperatively and those measured postoperatively were statistically significant (p < 0.05). The final reduction in axial length was 1.64 ± 0.85 mm. At the end of the follow-up, optical coherence tomography showed essential foveal reattachment in 30 eyes (93.75%), partial reattachment in two eyes (6.25%), and closure of macular holes in seven eyes (77.78%). No retinal detachment, vitreous haemorrhage, or other serious complications occurred following the surgery.

Conclusions

Posterior scleral reinforcement with genipin-cross-linked sclera showed safe and effective outcomes for the treatment of MTM during a follow-up period of at least one year.

Trial registration

11\12\2018, ChiCTR1800020012.

Supplementary Information

The online version contains supplementary material available at 10.1186/s12886-022-02497-6.

ANATOMICAL AND VISUAL OUTCOMES OF INVERTED INTERNAL LIMITING MEMBRANE FLAP TECHNIQUE VERSUS INTERNAL LIMITING MEMBRANE PEELING IN MYOPIC MACULAR HOLE WITHOUT RETINAL DETACHMENT: A Preliminary Retrospective Study

PURPOSE

To compare the results of vitrectomy with internal limiting membrane (ILM) peeling and inverted ILM flap for treating myopic macular hole without retinal detachment.

METHODS

Twenty-eight eyes of 28 patients undergoing vitrectomy with either ILM peeling (n = 16) or inverted ILM flap technique (n = 12) were included. Outcomes were myopic macular hole closure by optical coherence tomography and visual acuity at 6 months and at the end of follow-up.

RESULTS

Closure of myopic macular hole was achieved in 13 eyes (81.2%) of the ILM peeling group and in 11 eyes (91.7%) of the inverted ILM flap group. The median length of follow-up was 18 months in the peeling group and 10.3 in the inverted group. There were not statistically significant differences between restoration of the external limiting membrane, external limiting membrane and ellipsoid zone, and none of both layers between the two groups. The median best-corrected visual acuity (logarithm of minimal angle of resolution) at the end of follow-up was 0.25 (20/35 Snellen) in the peeling group and 0.4 (20/50) in the inverted group (P = 0.027).

CONCLUSION

Both techniques were associated with high closure rates of myopic macular hole but the small sample size and the retrospective design prevents any claims of superiority of one technique over the other.

Comparison of Anatomical and Visual Outcomes between Idiopathic and Myopic Macular Holes Using the Internal Limiting Membrane or Inverted Internal Limiting Membrane Flap Technique

Purpose

To compare the results of vitrectomy with those of internal limiting membrane (ILM) peeling or inverted ILM flap for treating myopic or idiopathic macular hole.

Methods

Thirty-nine eyes of 39 patients undergoing vitrectomy with ILM peeling for macular hole (25 idiopathic and 14 myopic) and 27 eyes of 27 patients undergoing vitrectomy with inverted ILM flap (15 idiopathic and 12 myopic) were included. Outcome measures were macular hole closure by optical coherence tomography and visual acuity at 6 months.

Results

Closure was achieved in 25 (100%) idiopathic and 12 (86%) myopic macular holes in the ILM peeling group and in 14 (93%) idiopathic and 11 (91.77%) macular holes in the inverted ILM flap group. There were no statistically significant differences in restoration of the external limiting membrane and ellipsoid zone between the groups. Median best-corrected visual acuity (logarithm of minimal angle of resolution) at the end of follow-up was 0.22 (20/32 Snellen) in idiopathic and 0.4 (20/50) in myopic (P=0.042) patients in the ILM peeling group and 0.4 (20/50) in idiopathic and 0.4 (20/50) in myopic (P=0.652) patients in the inverted ILM flap group.

Conclusion

Both techniques were associated with high closure rates in myopic and idiopathic macular holes, with somewhat better visual outcomes in idiopathic cases. The small sample size may have provided insufficient power to support the superiority of one technique over the other in the two groups.

[Axial ametropias of very high degree]

To characterize a complex of disorders developing in patients with extreme values of anteroposterior axis of the eye, it is necessary to create an appropriate nomenclature. As a topic for discussion, authors suggest to supplement the existing classifications of myopia and hyperopia with 'character of ametropia' section (axial, refractive, mixed) and the definition of ametropias of very high (ultra-high/extreme) degree (a criterion for myopia is: <-10 D). In prospect, classification of such ametropias should be based on the length of the anteroposterior axis of the eye.

Inverted Internal Limiting Membrane Flap Technique for Repair of Large Macular Holes: A Short-term Follow-up of Anatomical and Functional Outcomes

Background:

Inverted internal limiting membrane (ILM) flap technique has recently been reported in a limited number of studies as an effective surgical technique for the management of large macular holes (MHs) with fair MH closure rates as well as gains in visual acuity. In the current study, longitudinal changes in multi-focal electroretinogram (mfERG) responses, best-corrected visual acuity (BCVA) and spectral-domain optical coherence tomography (SD-OCT) were evaluated in eyes with large MHs managed by this technique.

Methods:

A prospective noncontrolled interventional study of eight patients (eight eyes) with large MHs (minimum diameter >400 μm) was conducted. All MHs were treated with pars plana vitrectomy and indocyanine green-assisted inverted ILM flap technique. SD-OCT images were used to assess the anatomical outcomes of surgery while BCVA and mfERG were used to evaluate the functional outcomes during a 3-month follow-up.

Results:

All patients underwent successful intended manipulation and translocation of the ILM flap without flap dislocation and achieved complete anatomical closure. Partial microstructural reconstruction, demonstrated on SD-OCT as restoration of the external limiting membrane and the ellipsoid zone, was observed in all cases as early as 1 month after surgery. Functionally, as compared to baseline, all patients showed improvements in BCVA and all but one in mfERG response during follow-up. However, Pearson's test revealed no significant correlations between BCVA and mfERG responses of the fovea and of the macular area at each evaluation time point.

Conclusions:

Inverted ILM flap technique appeares to be a safe and effective approach for the management of large idiopathic MHs with favorable short-term anatomical and functional results. Postoperative reconstruction of the microstructure generally shows good consistency with improvements in both BCVA and mfERG response, of which the latter might be a supplement for the former in postoperative functional follow-up.

Sulfur hexafluoride (SF6) versus perfluoropropane (C3F8) tamponade and short term face-down position for macular hole repair: a randomized prospective study

Background

To compare early visual and anatomical outcomes after either sulfur hexafluoride (SF₆) or perfluoropropane (C₃F₈) tamponade for macular hole repair.

Methods

147 eyes affected by primary full-thickness macular hole underwent pars plana vitrectomy with dye assisted removal of the internal limiting membrane and gas tamponade. Prone position was prescribed for 48 h after surgery. All patients were divided into 3 groups depending on the size of the hole: small (<250 µm), medium (>250–<400 µm) or large (>400 µm). Eyes within the same group randomly received either SF₆ (70 eyes) or C₃F₈ (77 eyes). A complete ophthalmic evaluation, including best corrected visual acuity and anatomic status of the macular holes, was conducted preoperatively, at 1 week and 1 month after surgery. Macular hole volume was calculated using optical coherence tomography scans. The Wilcoxon Signed Ranks Test, the Mann–Whitney Test, the Spearman’s rank-order correlation coefficient and the study of variance for repeated measures were used for statistical analysis.

Results

Mean best-corrected visual acuity improved from 0.92 logMAR to 0.28 logMAR (P < 0.001). A reduction of the dimensions of macular holes was observed in all cases, with a total repair of 90 % (63/70 eyes) in the SF₆ group and 91 % in the C₃F₈ group (70/77 eyes). There was a negative correlation between the initial minor diameter, the volume of the hole and the rate of anatomic success.

Conclusions

Short-term anatomical and visual outcomes were similar in eyes treated with either SF₆ or C₃F₈, independently of the stage of the macular hole. The initial volume and the minor diameter of the hole may be considered as valid tools for predicting surgical success. Age and gender did not appear to have influenced the prognosis.

COMPLIANCE WITH THE FACE-DOWN POSITIONING AFTER VITRECTOMY AND GAS TAMPONADE FOR RHEGMATOGENOUS RETINAL DETACHMENTS

PURPOSE

To determine the compliance with the face-down positioning (FDP) of the patients who had undergone vitrectomy and gas tamponade.

METHODS

One hundred and twenty-seven patients, 45 females and 82 males, who had undergone primary vitrectomy and gas tamponade for rhegmatogenous retinal detachments were studied. The FDP score was determined as 4 per day for 3 days after the surgery. The patient was given a score of one if the nurse found that the patient was in the FDP and zero if not in the FDP. A perfect FDP score was 12.

RESULTS

The mean ± SD FDP score was 10.2 ± 1.8 with a range of 3 to 12. Females (10.7 ± 1.2) scored significantly higher than males (9.9 ± 2.1) (Mann-Whitney U test: P < 0.05). Patients who scored a perfect 12 were 38 (29.9%; female, 14:31.1%; male 24:29.3%). Low scorers <8 were all males (12:14.6%) and no females (0:0.0%). Age did not seem to be related. Only 1 patient failed to achieve retinal attachment, although she had scored a perfect 12.

CONCLUSION

The compliance was considerably varied among patients. Some patients failed nearly or more than half times, and they were mostly males. The significance of the FDP to treat rhegmatogenous retinal detachment needs to be examined in a further investigation.